SiBE04 - 624 Inverter Pair Wall Mounted Type E-Series [Applied Models] zInverter Pair : Heat Pump
SiBE04-624 Inverter Pair E-Series zHeat Pump Indoor Units FTXR28EV1B FTXR42EV1B FTXR50EV1B Outdoor Units RXR28EV1B RXR42EV1B RXR50EV1B Table of Contents i
SiBE04-624 1. Introduction ............................................................................................ vi 1.1 Safety Cautions ....................................................................................... vi Part 1 List of Functions ................................................................ 1 1. Functions.................................................................................................2 Part 2 Specifications ..................................................
SiBE04-624 3. Control Specification .............................................................................62 3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 3.10 3.11 3.12 3.13 3.14 Frequency Control..................................................................................62 Preheating Operation (Quick Warming Function) ..................................63 Four-way Valve Operation......................................................................64 Compressor Start up Protection ....................
SiBE04-624 2.9 2.10 2.11 2.12 2.13 2.14 2.15 2.16 2.17 2.18 2.19 2.20 2.21 2.22 2.23 2.24 2.25 2.26 2.27 2.28 2.29 2.30 2.31 2.32 2.33 2.34 2.35 2.36 2.37 2.38 2.39 Fan Motor System (DC Motor) Fault ....................................................153 Streamer Unit Fault ..............................................................................155 Thermistor System Fault ......................................................................157 Front Panel Open / Close Fault.........................
SiBE04-624 Part 7 Removal Procedure ........................................................ 215 1. Indoor Unit...........................................................................................216 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 1.10 1.11 1.12 1.13 1.14 1.15 Removal of the Air Filters / Front panel................................................216 Removal of the Upper Panel ................................................................222 Removal of the Front Grille .......................
SiBE04-624 Index ............................................................................................. i Drawings & Flow Charts ...............................................................
SiBE04-624 Introduction 1. Introduction 1.1 Safety Cautions Cautions and Warnings Be sure to read the following safety cautions before conducting repair work. The caution items are classified into “ Warning” and “ Caution”. The “ Warning” items are especially important since they can lead to death or serious injury if they are not followed closely. The “ Caution” items can also lead to serious accidents under some conditions if they are not followed.
Introduction SiBE04-624 Caution Do not repair the electrical components with wet hands. Working on the equipment with wet hands can cause an electrical shock. Do not clean the air conditioner by splashing water. Washing the unit with water can cause an electrical shock. Be sure to provide the grounding when repairing the equipment in a humid or wet place, to avoid electrical shocks. Be sure to turn off the power switch and unplug the power cable when cleaning the equipment.
SiBE04-624 Introduction Warning Be sure to use an exclusive power circuit for the equipment, and follow the technical standards related to the electrical equipment, the internal wiring regulations and the instruction manual for installation when conducting electrical work. Insufficient power circuit capacity and improper electrical work can cause an electrical shock or fire. Be sure to use the specified cable to connect between the indoor and outdoor units.
Introduction SiBE04-624 Warning Do not use a joined power cable or extension cable, or share the same power outlet with other electrical appliances, since it can cause an electrical shock, excessive heat generation or fire. Caution Check to see if the parts and wires are mounted and connected properly, and if the connections at the soldered or crimped terminals are secure. Improper installation and connections can cause excessive heat generation, fire or an electrical shock.
SiBE04-624 Part 1 List of Functions 1. Functions.................................................................................................
Functions SiBE04-624 Functions Inverter (with Inverter Power Control) Operation Limit for Cooling (°CDB) Basic Function Compressor Comfortable Airflow Comfort Control Operation Operation Limit for Heating (°CWB) { Oval Scroll Compressor Swing Compressor Rotary Compressor Reluctance DC Motor Power-Airflow Flap Power-Airflow Dual Flaps Power-Airflow Diffuser Wide-Angle Louvers Vertical Auto-Swing (Up and Down) Horizontal Auto-Swing (Right and Left) 3-D Airflow Comfort Airflow Mode Cooling Breeze Ope
SiBE04-624 Part 2 Specifications 1. Specifications ..........................................................................................
Specifications SiBE04-624 1. Specifications 50Hz 220-230-240V Indoor Units Model Capacity Rated (Min.~Max.) Moisture Removal Running Current (Rated) Power Consumption Rated (Min.~Max.) Power Factor COP Rated (Min.~Max.) Liquid Piping Connections Gas Drain Heat Insulation Max. Interunit Piping Length Max.
SiBE04-624 Specifications 50Hz 220-230-240V Indoor Units Model FTXR50EV1B RXR50EV1B Outdoor Units Capacity Rated (Min.~Max.) Moisture Removal Running Current (Rated) Power Consumption Rated (Min.~Max.) Power Factor COP Rated (Min.~Max.) Liquid Piping Connections Gas Drain Heat Insulation Max. Interunit Piping Length Max. Interunit Height Difference Amount of Additional Charge of Refrigerant Indoor Unit Front Panel Color kW Btu/h kcal/h L/h A Cooling 5.0 (1.55~5.
Specifications 6 SiBE04-624 Room Air Conditioners E-Series
SiBE04-624 Part 3 Printed Circuit Board Connector Wiring Diagram 1. Printed Circuit Board Connector Wiring Diagram....................................8 1.1 Indoor Unit................................................................................................8 1.2 Outdoor Unit ...........................................................................................
Printed Circuit Board Connector Wiring Diagram SiBE04-624 1. Printed Circuit Board Connector Wiring Diagram 1.
SiBE04-624 PCB Detail Printed Circuit Board Connector Wiring Diagram PCB(1): Control PCB JC JB V1 FU1 S46 S32 S48 LED A S21 S52 S43 S51 S41 S1 PCB(2): Display PCB JA (R5944) PCB(3): Signal Receiver / Transmitter PCB S56 S58 SW1 LED2 LED3 (R5946) S57 S63 (R5945) PCB(4): Humidity sensor PCB PCB(5): High Voltage Unit PCB S402 R2T S401 Humidity sensor CN1 S403 (R5948) (R5947) Printed Circuit Board Connector Wiring Diagram 9
Printed Circuit Board Connector Wiring Diagram 1.
SiBE04-624 Printed Circuit Board Connector Wiring Diagram PCB Detail PCB(1): Control PCB FU3 (30A) V2 HK1 HH1 HR1 HH2 FU2 (3.15A) HR2 FU1 (3.
Printed Circuit Board Connector Wiring Diagram 12 SiBE04-624 Printed Circuit Board Connector Wiring Diagram
SiBE04-624 Part 4 Function and Control 1. Description of Operation .......................................................................15 1.1 Indoor Unit..............................................................................................15 1.2 Outdoor Unit ...........................................................................................16 2. Main Functions......................................................................................17 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 2.
SiBE04-624 3.12 Discharge Pipe Temperature Control.....................................................72 3.13 Automatic Defrosting ..............................................................................73 3.14 Electronic Expansion Valve Control .......................................................
SiBE04-624 Description of Operation 1. Description of Operation 1.1 Indoor Unit (Input) Room temperature thermistor Heat exchanger thermistor Temperature control Indoor fan control Transmit signals to outdoor unit to change the frequency of compressor according to the difference of temperature between preset temperature and room temperature.
Description of Operation 1.2 SiBE04-624 Outdoor Unit (Input) Discharge pipe thermistor Outdoor air thermistor Outdoor unit (Output) Compressor Compressor ON/OFF control Compressor capacity control 4-way valve Frequency control Heat exchanger thermistor Humidifying thermistor 3 min. stand-by function Fan motor Defrost control Switches to cooling cycle and defrosts.
SiBE04-624 Main Functions 2. Main Functions 2.1 “URURU” Humidifying / Humid Heating Operation Operation "URURU" Humidifying Humid Heating (R5951) ∗ Refer to the operation manual for details. Features A world first new humidifying method has adopted What is new in this method is to intake vapor in the outdoor air with the hygroscopic element mounted in outdoor unit, and send indoors.
Main Functions SiBE04-624 • “Humid heating” by URURU / SARARA This air conditioner enables uniformly humidifying the room by circulating vapor with warm air. 80 70 60 50 40 30 20 The room is uniformly humidified. (R3326) Powerful humidifying ability The humidifying capacity is 450 ml/h (5.0 kW class) and equivalent to that of a normal humidifier. Model Humidifying Capacity FTXR28E 400ml/h FTXR42E 425ml/h FTXR50E 450ml/h The values above are measured at 7°C DB / 6°C WB of outdoor air and with 7.
SiBE04-624 How to Check the Motion of Humidifying Operation Main Functions You can check whether the humidifying unit is in good working order. If you set “the humidifying only test operation” (refer to the installation manual for details), you can check even beyond the range of the conditions for humidifying operation mentioned above. 1. Hygroscopic fan .......................... Air is exhaled from the front exhaust outlet of outdoor unit. 2. Humidifying fan/heater/damper ...
Main Functions Time chart for humidifying operation control SiBE04-624 Approx. 1min. after heating operation start up, it repeats humidifying and drying alternately (to protect condensation for inside the hose). ON Heating operation OFF Approx. 1min Approx. 3min Humidifying fan damper ON OFF ON Hygroscopic OFF fan Heater b' a b a 15 sec. b a b' 15 sec. ON Dry mode OFF ON Rotor OFF (R5953) . Humidifying time Approx. 70min.
SiBE04-624 Humidification performance by outdoor temperature Main Functions The humidifying of this system is different from that of the normal humidifier. Therefore, the humidifying performance varies with the outdoor temperature or installation condition. Sufficient humidifying capacity may not be attained depending on the weather condition in operation. When the outdoor temperature lowers by 5°C, the humidifying capacity is decreased by about 15%.
Main Functions Reachable humidity by outdoor condition SiBE04-624 • The ability of humidification drops when the outdoor temperature and humidity are low. 28 class 100 Condition; Model:FTXR28EV1B Indoor temperature setting:20°C Airflow rate:Max Room volume:70m3 Air change rate:0.5/hour humidifying hose length:7.
SiBE04-624 Main Functions 50 class 100 Condition; Model:FTXR50EV1B Indoor temperature setting:20°C Airflow rate:Max Room volume:120m3 Air change rate:0.5/hour humidifying hose length:7.5m Outdoor humidity (%) 80 60 60% 40% 40 20% 20 0 -10 0 10 Outdoor temperature (°C) 20 (R5959) The max. piping length is set to 10 m, but the humidifying performance varies with the length of the humidifying hose. When the hose length increases by 2 m, the humidifying capacity decreases by about 10%.
Main Functions Reference SiBE04-624 Room humidity (discharged air humidity) by ventilation cycle (16m2, hose length: 4m, 28 class) 1. Outdoor temp. 0°CDB, 50% RH 100% 90% Room humidity(RH%) 80% 70% 60% 50% Room temperature 17˚C 20˚C 23˚C 40% 30% 20% 10% 0% 0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 Ventilation cycle (times/h) (R3335) 2. Outdoor temp. 7°CDB, 87% RH 100% 90% Room humidity (RH%) 80% Room temperature 17˚C 20˚C 70% 60% 50% 23˚C 40% 30% 20% 10% 0% 0 0.2 0.4 0.6 0.8 1 1.
SiBE04-624 Main Functions Room humidity (discharged air humidity) by outdoor temperature (16m2, hose length: 4m, ventilation cycle: 0.75 times/h, 28 class) 1. Room temp. 17°CDB 100% Room humidity(RH%) 90% Outdoor relative humidity 80% 80%RH 70% 60% 60%RH 50% 40%RH 40% 30% 20% 10% 0% -10 -5 0 5 10 Outdoor temperature(˚C) 15 20 (R3922) 2. Room temp.
Main Functions 2.2 SiBE04-624 “SARARA” Drying Operation Operation Dry Cooling "SARARA" Drying (R5961) ∗ Refer to the operation manual for details. Features Reheating dehumidifying method is applied. Powerful evaporator eliminates the humidity in your room exclusively. Dry cool air is mixed with warm air from the reheater, thereby blowing in optimal and comfortable dry air.
SiBE04-624 Main Functions Differences on "dehumidification" and "cooling dehumidification" operation Method “SARARA” Drying Puts a pressure reducing device (solenoid valve) in the center of the heat exchanger of indoor unit to separate it into upper and lower side. The upper side acts as a condenser to heat the air.
Main Functions 2.3 SiBE04-624 Comfort Sleep Operation Operation Set the time to wake up. COMFORT SLEEP (R5965) Effective mode for COMFORT SLEEP operation • • • • • • Cooling Dry cooling Moisture cooling Heating Humid heating Moisture heating ∗ Refer to the operation manual for details. Features Outline of function The temperature is controlled in unique V-shape pattern within the range of about 2°C upper and lower.
SiBE04-624 Main Functions Human sleep z Sleep cycle and change in body temperature Body Temperature Temperature shift (˚C) 38 9 18 24 2 3 4 5 6 7 37 36 Sharp lowering of body temperature after falling asleep Stage of sleep 1 Awakening REM sleep 1 2 9 Sleep cycle 18 24 1 2 3 Maximum difference of change in body temperature 4 5 6 7 Rising of body temperature before wake-up 3 4 Smooth shift to awakening Deep sleep Regular rhythm Falling asleep Rising The body temperature lowers
Main Functions 2.4 SiBE04-624 MOISTURIZING Operation Operation MOISTURIZING (R5967) Effective mode for MOISTURE COOLING • Cooling • Dry cooling Effective mode for MOISTURE HEATING • Heating • Humid heating ∗ Refer to the operation manual for details. Features “Relatively high humidity” setting, “Comfort Airflow Mode” giving no airflow to the body, and “emission of vitamins and hyaluronic acid” --- These 3 types of operations are performed simultaneously to create skin-friendly environment.
SiBE04-624 2.5 Main Functions Automatic Operation Operation AUTO operation (R5985) ∗ Refer to the operation manual for details. Features When the AUTO mode is selected with the remote controller, the microcomputer automatically determines the operation mode from cooling and heating according to the room temperature and setting temperature at the time of the operation startup, and automatically operates in that mode.
Main Functions 2.6 SiBE04-624 Comfort Airflow Mode Operation The indication will change every time “ Displays COMFORT AIRFLOW operation Displays COOLING BREEZE operation ” is pressed. Indication disappears Comfort Airflow (R5968) Effective mode for comfort airflow mode • Heating • Humid heating • Cooling • “SARARA” drying • Dry cooling • Moisturizing Flap motion • Upper and lower flaps halt at the fixed position of the upper side or lower side of the swing.
SiBE04-624 Main Functions Feel air on heating Air conditioner When comfort airflow mode is carried out in heating · · · Air conditioner Comfortable radiant heating has realized! (R3356) Note Function and Control In heating operation, it takes time to transmit heat to a distant place because the airflow direction is controlled not to blow direct on human. It is recommended that this operation mode is used after the room has been warmed up.
Main Functions 2.7 SiBE04-624 Cooling Breeze Operation Operation The indication will change every time “ Displays COMFORT AIRFLOW operation Displays COOLING BREEZE operation ” is pressed. Indication disappears Cooling breeze (R5969) Effective mode for cooling breeze airflow • • • • Note Cooling “SARARA” drying Dry cooling Flash streamer air purifying On automatic mode, when actual operation mode is heating, this cool air fluctuation operation does not work.
SiBE04-624 2.
Main Functions 2.9 SiBE04-624 Wide-angle Louvers Wider airflow eliminates disagreeable irregular temperature distribution. For the right and left flaps, the wide-angle louver which produces wider airflow is adopted. Since it veers flexibly and swings horizontally at a wide angle, comfortable airflow spreads to every corner of the room. Wide-angle Louvers Direction of airflow changes greatly along the shape of curved vane. Direction of airflow changes greatly along the shape of curved vane.
SiBE04-624 Main Functions 2.10 3-D Airflow Alternative swing of flaps in vertical and horizontal directions circulates the airflow to every corner of the room and prevents uneven temperature distribution. Use of the 3-D airflow control prevents uneven temperature distribution in the whole room. Particularly, the comfortable zone 10 cm above the floor is widened 1.5 times of the conventional zone. Start (R5102) z If it is used at the start of operation, a flow of draft may feel you chilly.
Main Functions SiBE04-624 2.11 POWERFUL Operation Operation POWERFUL (Cannot be used while the unit is not running.) (R5971) Effective mode for POWERFUL COOLING • Cooling • Dry cooling • Moisture cooling Effective mode for POWERFUL HEATING • Heating • Humid heating • Moisture heating ∗ Refer to the operation manual for details. Note Features 38 z Operating sound becomes slightly loud. z It is impossible to change the airflow rate, temperature, and humidity.
SiBE04-624 Main Functions 2.12 Indoor Unit Quiet Operation Features Forced dropping of the fan tap decreases the airflow rate and reduces airflow noise. (Noise is reduced by about 3 dB as compared to that in L tap.) Note z Airflow rate can not be set. z Since the performance is somewhat lowered as compared to that in normal operation (70% under rated conditions), the room may not be cooled (or heated) when this operation is used for a long time.
Main Functions SiBE04-624 2.14 Monitor Brightness Setting The brightness of the multi-colored indicator lamp can be adjusted HIGH, LOW, or OFF. It is convenient when it is excessively bright while asleep. Multi-colored indicator lamp (R5990) ∗ Refer to the operation manual for details. 2.15 Information Display Operation INFORMATION Return to normal display Set temperature Indoor temperature Indoor humidity Outdoor temperature (R5972) ∗ Refer to the operation manual for details.
SiBE04-624 Main Functions 2.16 MOLD PROOF Operation This is an integrated naming of functions such as inside drying, moist air exhaustion, moldprevention stick. Drying inside the air conditioner prevents mold or odors to be generated. Operation Operation can be selected from automatic / manual.
Main Functions SiBE04-624 Inside Drying 1. Drained water discharge Drained water in drain pan is discharged. 2. Inside drying operation After the drained water discharged, the moisture etc. which are left on drain pan or heat exchanger are dried by evaporation. Exhausting Moisture 3. Moisture exhaustion Exhaust moisture to outdoors using the humidification hose.
SiBE04-624 Main Functions 2.17 Mold Proof Stick Features Drain pan which prevents mold proliferation The drain pan of the main unit which easily goes moldy is equipped with a “Stick” having mildew-proof, antibacterial and antivirus effect. Mold proof stick Drain pan (R5104) Since mildew-proof, antibacterial and antivirus agent of silver group which is the compound of highly safe titanium oxide and silver is used as a single agent, drain water is not affected by this agent.
Main Functions SiBE04-624 2.18 MOLD SHOCK Operation The room is kept clean by removing excessive moisture by rapidly lowering the humidity in the room for 1 hour, and keeping operation for 2 hours (total 3 hours). Operation It is not self-starting operation. MOLD SHOCK Opeation (Hold down for 2 seconds.) (R5975) ∗ Refer to the operation manual for details. Features Dry shock method (Mold Shock Operation) Method to prevent the generation of mold by suddenly drying the humid environment.
SiBE04-624 Main Functions Comparison with cooling operation and mold shock operation Normal cooling operation The humidity in the room returns to original level when cooling operation is stopped. Humidity Cooling start Cooling stop Time Growth of mold Mold grows according to the humidity Time (R5109) Mold shock operation after cooling The humidity in the room is lowered suddenly by Mold Shock Operation.
Main Functions Reference SiBE04-624 Effect Humidity% 90 85 80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 9:00 9:20 MOLD SHOCK operation.
SiBE04-624 Main Functions 2.19 HOME LEAVE Ventilation Operation HOME LEAVE VENTILATION (R5976) ∗ Refer to the operation manual for details. Ventilate your room while you are out This function refreshes your room by ventilating while you are out.
Main Functions SiBE04-624 2.20 FLASH STREAMER AIR PURIFYING Operation Operation FLASH STREAMER AIR PURIFYING + FRESH AIR SUPPLY VENTILATION FLASH STREAMER AIR PURIFYING + Strong FRESH AIR SUPPLY VENTILATION OFF FLASH STREAMER AIR PURIFYING FLASH STREAMER AIR PURIFYING operation (R5980) ∗ Refer to the operation manual for details. Flash Streamer Air-Purifying The technology for the real air purifier is adopted for the air conditioner.
SiBE04-624 Main Functions Mechanism of Flash Streamer Air-Purifying The streamer discharging high energy electron analyzes and removes powerfully odor, unwanted bacteria and hazardous chemical materials at the oxidative distraction speed of 1000 times higher than the generally used glow discharge.
Main Functions SiBE04-624 Deodorizing Performance of Flash Streamer and Titanium Apatite Photocatalyst Unpleasant odor daily generating in the room such as pet odor or garbage odor is powerfully removed. Speedy deodorization: 90% or more odor has been removed in 10 minutes. Cigarette odor of 80% or more has been removed. Persist rate (%) Daily odor removal performance by streamer air purifying (%) Naturally removed Over 90% removed in approximately 10 min. Time (min.
SiBE04-624 Main Functions 2.21 Fresh Air Supply Ventilation Operation FLASH STREAMER AIR PURIFYING + FRESH AIR SUPPLY VENTILATION FLASH STREAMER AIR PURIFYING + Strong FRESH AIR SUPPLY VENTILATION OFF FLASH STREAMER AIR PURIFYING FRESH AIR SUPPLY VENTILATION operation (R5977) ∗ Refer to the operation manual for details. Air Supply Ventilation Features The air supply ventilation system using only fresh air. Any contaminated outdoor air is purified in two stages of indoor unit and outdoor unit.
Main Functions SiBE04-624 Ventilation System The ventilation type is mainly divided into two. The convenient system is supply ventilation. Supply Ventilation Exhaust Ventilation Fresh Air Air Supply Draft (R5979) - Quiet because the ventilation fa is located in the - Operation noise is heard because the ventilation outdoor unit fan is located in the room. 52 - Energy saving system due to low heat loss - Electricity charges are high because heat loss is high.
SiBE04-624 Main Functions 2.22 Wipe-clean Flat Panel It wipes off dirt in an instant. The grill-less panel is easy to clean and can be dismounted easily for washing. Dismount the panel in the procedure as mentioned below, wipe it lightly with soft cloth impregnated with lukewarm water or cold neutral detergent solution and dry it in the shade. Note: If it is washes with use of polishing powder or scrubber, or in the water hotter than 40°C, it may be scratched, discolored or deformed.
Main Functions SiBE04-624 2.24 TIMER Operation 2.24.1 24-hour ON/OFF Timer Operation Set the time ON/OFF timer Cancel (R5986) ∗ Refer to the operation manual for details. Features Time can be set in the unit of 10 min. When the 24-hour ON/OFF is set, the indication of present time disappears. Time is kept in memory in the next operation unless it is cancelled. The clock error is ±30 sec. per month.
SiBE04-624 Main Functions 2.25 Night Set Mode When you set the COUNTDOWN OFF TIMER or OFF TIMER, the unit is operated automatically in night set mode.
Main Functions SiBE04-624 2.26 Table for Special Modes Operation of indoor unit ON/OFF button and buttons of remote controller To enter a specific mode, press one of the buttons below for more than 5 sec. A. Diagnosis mode [CANCEL] button transmission normal [Indoor ON/OFF] button [CANCEL] button or leave it for 60 sec. B. Forced operation mode [ON/OFF] button or leave it for 15 min. Power reset [indoor ON/OFF] button transmission abnormal C.
SiBE04-624 Main Functions F. For humidifying hose length setting(*), refer to page 93. G. In forced humidifying drying mode, drying operation continues for approx. 30 min. for service. Start this operation after removing all moisture inside the hose. During forced drying operation, cooling, heating or dehumidifying operation is unavailable. H. Humidifying air flow rate fine adjusting mode allows to fine-tune the speed of the humidification fan around ±10 % relative to AUTO.
Main Functions SiBE04-624 2.27 Thermostat Control Outline When COOLING or HEATING mode is selected with the remote controller, the micro computer prevents the unit from turning OFF until the requested room temperature could be obtained. Detail In the table below you can find the thermostat ON and OFF conditions for a set point of 21°C. Cooling Heating Set point temperature 21°C --> shift 0.5°C Set point temperature 21°C --> shift 2.0°C OFF 19.5°C 24.5°C ON 21°C 23°C Monitoring 20~20.5°C 10min 23.
SiBE04-624 Main Functions 2.28 Fan Speed Control for Indoor Units Control mode The airflow can be automatically controlled depending on the difference between the set temperature and the room temperature. This is done through speed control and Hall IC control. Phase steps Speed control and fan speed control contains different steps: .
Main Functions SiBE04-624 Heating Room temp.area A B C D E F G H I J K L G OFF MH MH MH MH MH MH MH MH MH MH MH F OFF LM LM M M MH MH MH MH MH MH MH Indoor heat exchanger temperature area E D C OFF OFF OFF LM L L LM L L LM LM L M LM LM M M LM MH M LM MH MH M MH MH M MH MH MH MH MH MH MH MH MH B OFF L L L L L L L L L L L A OFF 2L 2L 2L 2L 2L 2L 2L 2L 2L 2L 2L Room temperature area Set point - room temperature –1.5 A –1.0 B –0.5 C 0D 0.5 E 1.0 F 1.5 G 2.0 H 2.5 I 3.0 J 3.5 K 4.0 L 4.
SiBE04-624 Main Functions 2.29 Draft Prevention (HOT Start) Outline Draft prevention control is done to prevent a cold draft feeling when the unit is started up in heating operation. This will happen if the indoor coil temperature drops. Detail The outdoor unit will prevent a cold draft by monitoring the indoor heat-exchanger thermistor. It will increase the minimum compressor frequency if the indoor heat exchanger drops below 33°C.
Control Specification SiBE04-624 3. Control Specification 3.1 Frequency Control Outline Once the timers of the compressor start-up have elapsed, the unit will determine its compressor frequency out of the following parameters; 1. ∆D: The difference between the room temperature and the set-point. 2. Td : The discharge temperature. Indoor frequency command The indoor command frequency is determined by the difference between the room temperature, and the temperature set by the remote controller.
SiBE04-624 3.2 Control Specification Preheating Operation (Quick Warming Function) Outline Operate the inverter in the open phase operation with the conditions including the preheating command from the discharge pipe temperature. Detail On condition The preheating operation starts when the discharge pipe temperature drops below 10°C. At that time, the inverter in open phase operation starts.
Control Specification 3.3 SiBE04-624 Four-way Valve Operation Outline Because the four-way valve only operates properly when there is an adequate pressure difference, the four-way valve compensation function has been implemented to insure this minimal pressure difference. Detail The four-way valve compensation function insures a good four-way valve operation by demanding a certain minimal operation frequency for a certain time. By doing this, the unit is ensuring the switching of the four-way valve.
SiBE04-624 3.4 Control Specification Compressor Start up Protection Detail The gradual build-up of the upper operation frequency is illustrated in the graph below. Frequency (Hz) FCG4 FCG3 FCG2 FCG1 Time (sec) TCG1 TCG2 TCG3 TCG4 (R5908) Fig. : Compressor protection function graph.
Control Specification 3.5 SiBE04-624 Fan Speed Control for Outdoor Unit Outline The fan speed control regulates the speed of the outdoor fan. Detail Fan control is carried out according to the following conditions. 1. Fan ON control for electric component cooling fan 2. Fan control when defrosting 3. Fan OFF delay when stopped 4. ON/OFF control when cooling operation 5.
SiBE04-624 3.7 Control Specification Input Current Control Detail Compressor Stop I1 Stop Zone I2 Step down Zone I3 Steady Zone Return Zone (R5907) Class I1 (A) I2 (A) I3 28 14 5.5 4.5 Cooling 42 14 7.5 6.5 50 14 10.0 9.0 28 14 10.5 9.5 Heating 42 14 10.5 9.5 50 14 10.5 9.5 Stop zone z After 5 seconds in this zone the compressor is stopped I 2 *I2 has the cooling and heating current, respectively.
Control Specification 3.8 SiBE04-624 Peak-cut Control Outline In heating operation, malfunctioning of the unit (for example dirty filters) can cause the discharge pressure to rise excessively and reach unacceptable levels. To avoid this, peak-cut control will monitor the condensing temperature and when necessary decrease the operating frequency in an attempt to lower the discharge pressure at an early stage.
SiBE04-624 3.9 Control Specification Indoor Coil Freeze-up Protection Outline During cooling or dry operation, a malfunction of the unit may cause the indoor heat exchanger's temperature to drop excessively. To prevent the indoor heat exchanger from freezing up, the freeze protection function will reduce the compressor's maximum operation frequency. Detail The freeze protection function regulates the maximum operation frequency as indicated in the picture underneath.
Control Specification SiBE04-624 3.10 Dew Prevention Outline Cooling the air around us means that the air is dehumidified (condensation of water on the coil). But because the air is cooled down, less water can be absorbed by the air and as a consequence the relative humidity of the air rises. When the relative humidity of the outlet air nears 100%, you will have water being blown in.
SiBE04-624 Control Specification 3.11 Liquid Compression Protection 2 Outline The function will ensure a pressure differential between the high pressure and the low pressure. This is required when cooling with low outdoor ambient temperature because HP gets weak and you will have small capacity and a high power input. The compressor stops according to the conditions of the outdoor ambient temperature and the outdoor heat exchanger temperature.
Control Specification SiBE04-624 3.12 Discharge Pipe Temperature Control Outline Overheating has a negative influence on the operating lifetime of a compressor. That's why this function will limit the maximum operating frequency of the compressor if deemed necessary.
SiBE04-624 Control Specification 3.
Control Specification SiBE04-624 Defrosting Time Chart 64Hz 30Hz Frequency 0Hz 120sec. 50sec. Compressor 620sec. 70sec. ON OFF Four way valve ON 8sec. 8sec.
SiBE04-624 Control Specification 3.14 Electronic Expansion Valve Control Outline The following items are included in the electronic expansion valve control. Electronic expansion valve is fully closed Electronic expansion valve is fully closed when turning on the power.
Control Specification SiBE04-624 3.14.2 Control when Starting Outline Obviously when the unit is switched on, some adjustments to the expansion valve opening have to be made in order to prevent excessive heating or moisture. Cooling EV = Kevopf x ∆Fcom+ Kevopdce x DA+ Kevopdoa x DOA+ P5 Heating In 2 min. from the operation starts. EV = Kevopf x ∆Fcom + P5 After 2 min. from the operation starts.
SiBE04-624 Control Specification 3.14.4 Target Discharge Pipe Temperature Control Outline Superheat (SH) is required to insure that only gas and not liquid is sucked up by the compressor. Because of the direct link between the SH and the discharge temperature (see Fig. target discharge temperature), a control on the discharge temperature was made to be one of the main control systems of Daikin air-conditioners. The discharge temperature and SH are regulated by the expansion valve. SC Discharge temp.
Control Specification SiBE04-624 3.14.5 Pressure Equalization Control Outline The pressure difference between the condenser and evaporator works as an extra load when restarting the compressor. To limit the load on the compressor when restarting it and consequently limit the starting current, a pressure-equalization is performed after deactivating the compressor. Pressure equalization is achieved by opening the expansion valve to a certain level and then closing it again.
SiBE04-624 Control Specification 3.14.6 Control for Abnormally High Discharge Temperature Outline An abnormally high discharge temperature is an indication for a too high suction temperature or super-heat. Making adjustments to the expansion valve opening can solve this problem. Detail Increasing the expansion valve opening will increase the refrigerant flow through the evaporator and decrease the superheat and the discharge temperature.
Control Specification 80 SiBE04-624 Function and Control
SiBE04-624 Part 5 System Configuration 1. Installation Manual ................................................................................82 1.1 Indoor Units ............................................................................................82 1.2 Outdoor Units .........................................................................................96 2. System Configuration..........................................................................106 3. Instruction............................
Installation Manual SiBE04-624 1. Installation Manual 1.1 Indoor Units Safety Precautions • Read these Safety Precautions carefully to ensure correct installation. • This manual classifies the precautions into WARNING and CAUTION. Be sure to follow all the precautions below: they are all important for ensuring safety. WARNING...............Failure to follow any of WARNING is likely to result in such grave consequences as death or serious injury. CAUTION...............
SiBE04-624 Installation Manual Accessories A Mounting plate 1 E Air supply filter frame 1 J AAA dry-cell batteries 2 B Deodorizing filter for streamer 1 F Indoor unit fixing screws (M4 × 12L) 3 K Operation manual 1 C Titanium apatite photocatalytic air-purifying filter 1 G Wireless remote controller 1 L Installation manual 1 D Air supply filter 1 H Remote controller holder 1 Choosing an Installation Site • Before choosing the installation site, obtain user approval. 1. Indoor unit.
Installation Manual SiBE04-624 Indoor Unit Installation Drawings 2. Removing and installing indoor unit. • Installation method 1) Using the marks (3 locations) on top of the indoor unit, attach the A mounting plate hooks onto the indoor unit. 2) Attach the tabs on the bottom frame onto the A mounting plate. If the tabs are not hooked onto the plate, remove the front grille to hook them. (Check to see if the tabs are hooked securely.
SiBE04-624 Installation Manual Installation Tips 1. Removing and installing front panel. • Removal method Rotating shaft Rotating shaft 1) Open the front panel. 2) Spread out the shaft hole on the left side and remove the rotating shaft. Spread out the shaft hole on the right side as well and remove the rotating shaft. Shaft hole Shaft hole • Installation method Insert the right and left rotating shafts on the front panel into the shaft holes one at a time and slowly close the panel.
Installation Manual SiBE04-624 Installation Tips 3. Removing and installing the front grille. • Removal method Fig. 1 1) Remove the front panel, air filter and upper panel. 2) Fully open the top and bottom horizontal louvers. (See Fig. 1) 3) Remove the 3 screws in the front grille. 4) Lift the hooks (3 locations) on the front grille with a flathead screwdriver to discharge the tab. (Look for the mark.) (See Fig. 2) 5) Pull forward the front grille to remove.
SiBE04-624 6. Installation Manual How to replace the drain plug and drain hose. • Replacing onto the left side 1) Remove the insulation fixing screws on the right to remove the drain hose. 2) Reattach the insulation fixing screw on the right as it was. *(Forgetting to attach this may cause water leakages.) 3) Remove the drain plug on the left side and attach it to the right side. 4) Insert the drain hose and tighten with included F indoor unit fixing screw.
Installation Manual SiBE04-624 Indoor Unit Installation 1. Installing the mounting plate. • The A mounting plate should be installed on a wall which can support the weight of the indoor unit. 1) Temporarily secure the A mounting plate to the wall, make sure that the panel is completely level, and mark the boring points on the wall. 2) Secure the A mounting plate to the wall with screws.
SiBE04-624 4. Installation Manual Laying piping, hoses, and wiring. • Connect the humidifying hose to the indoor unit duct. See 5. Humidifying hose installation work for details. • Lay the piping, drain hose and humidifying hose according to the orientation of the piping coming out of the unit, as shown below. • Make sure the drain hose is sloped downward. • Wrap the piping, drain hose and humidifying hose together using insulation tape.
Installation Manual SiBE04-624 Indoor Unit Installation 4-4. Wall embedded piping. Inner wall Insert drain hose to this depth so it won’t be pulled out of drain pipe. Follow the instructions given under Left-side, left-back, or left-bottom piping . Drain hose 50mm or more 1) Insert the drain hose to this depth so it won’t be pulled out of the drain pipe. Vinyl chloride drain pipe (VP-30) Outer wall WARNING Do not bundle the power code with a binding band, a twist tie or other method.
SiBE04-624 6. Installation Manual Wiring. 1) Strip wire ends (15mm). 2) Match wire colours with terminal numbers on indoor and outdoor unit’s terminal blocks and firmly screw wires to the corresponding terminals. 3) Connect the earth wires to the corresponding terminals. 4) Pull wires to make sure that they are securely latched up, then retain wires with wire retainer. 5) In case of connecting to an adapter system. Run the remote control cable and attach the S21. (Refer to 7. Connecting to the HA system.
Installation Manual SiBE04-624 Indoor Unit Installation 4) Remove the electric parts box cover. (3 tabs) (Refer to Fig. 2) 4-1) Discharge the tab 3. 4-2) Pull up the electric parts box cover slowly, discharge the tab 4, slide up, and discharge the tab 5. 5) Insert the connection cord into the HA connector “S21”. 6) Lay the connection cord as shown in “Fig. 3”. 7) Replace the electric parts box cover and electric parts box as they were. 8) Attach the decelerator assembly part along with the guide rail.
SiBE04-624 Installation Manual Setting the Humidifying Hose Length 1. Setting the humidifying hose length. • Set the humidifying hose length to ensure humidifying capacity. Use the remote controller to set the humidifying hose length. When doing this, power on the unit as communication is established between the unit and the remote controller. (The humidifying hose length includes the rear of the indoor unit.
Installation Manual SiBE04-624 Refrigerant Piping Work 1. Flaring the pipe end. 1) Cut the pipe end with a pipe cutter. 2) Remove burrs with the cut surface facing downward so that the chips do not enter the pipe. 3) Put the flare nut on the pipe. 4) Flare the pipe. 5) Check that the flaring is properly made. (Cut exactly at right angles.) Remove burrs Flaring Set exactly at the position shown below.
SiBE04-624 Installation Manual Trial Operation and Testing 1. Trial operation and testing. 1-1. Measure the supply voltage and make sure that it falls in the specified range. 1-2. Trial operation should be carried out in either cooling or heating mode. • In cooling mode, select the lowest programmable temperature; in heating mode, select the highest programmable temperature. 1) Trial operation may be disabled in either mode depending on the room temperature.
Installation Manual 1.2 SiBE04-624 Outdoor Units Safety Precautions • Read these Safety Precautions carefully to ensure correct installation. • This manual classifies the precautions into WARNING and CAUTION. Be sure to follow all the precautions below: they are all important for ensuring safety. WARNING...............Failure to follow any of WARNING is likely to result in such grave consequences as death or serious injury. CAUTION...............
SiBE04-624 Installation Manual Accessories Accessories supplied with the outdoor unit: B Drain plug A Installation Manual 1 C Humidifying hose 1 D Joint 1 E Elbow 1 F Binding band 1 5 Precautions for Selecting the Location 1) Choose a place solid enough to bear the weight and vibration of the unit, where the operation noise will not be amplified. 2) Choose a location where the hot air discharged from the unit or the operation noise will not cause a nuisance to the neighbo rs of the user.
Installation Manual SiBE04-624 Outdoor Unit Installation Drawings 1. Precautions for humidifying hose installation work. • Moisture on the outdoor unit is brought to the indoor unit together with air around the outdoor unit during humidifying operation. Install the outdoor unit in a clean and calm location. • When embedding C humidifying hose: 1) Cannot be installed to the existing embedded piping. Embedding work is separately necessary.
SiBE04-624 Installation Manual Installation Guidelines • Where a wall or other obstacle is in the path of outdoor unit’s intake or exhaust airflow, follow the installation guidelines below. • For any of the below installation patterns, the wall height on the exhaust side should be 1200mm or less.
Installation Manual SiBE04-624 Outdoor Unit Installation 3. Flaring the pipe end. 1) Cut the pipe end with a pipe cutter. 2) Remove burrs with the cut surface facing downward so that the chips do not enter the pipe. 3) Put the flare nut on the pipe. 4) Flare the pipe. 5) Check that the flaring is properly made. (Cut exactly at right angles.) Remove burrs Flaring Set exactly at the position shown below.
SiBE04-624 5. Installation Manual Purging air and checking gas leakage. • When piping work is completed, it is necessary to purge the air and check for gas leakage. WARNING 1) 2) 3) 4) Do not mix any substance other than the specified refrigerant (R410A) into the refrigeration cycle. When refrigerant gas leaks occur, ventilate the room as soon and as much as possible. R410A, as well as other refrigerants, should always be recovered and never be released directly into the environment .
Installation Manual SiBE04-624 Outdoor Unit Installation 6. Refilling the refrigerant. Check the type of refrigerant to be used on the machine nameplate. Precautions when adding R410A Fill from the liquid pipe in liquid form. It is a mixed refrigerant, so adding it in gas form may cause the refrigerant composition to change, preventing normal operation. 1) Before filling, check whether the cylinder has a siphon attached or not.
SiBE04-624 Installation Manual Pump Down Operation In order to protect the environment, be sure to pump down when relocating or disposing of the unit. 1) 2) 3) 4) Remove the valve cap from liquid stop valve and gas stop valve. Carry out forced cooling operation. After five to ten minutes, close the liquid stop valve with a hexagonal wrench. After two to three minutes, close the gas stop valve and stop forced cooling operation.
Installation Manual SiBE04-624 Wiring WARNING 1) Do not use tapped wires, stranded wires (CAUTION (1)), extension cords, or starburst connections, as they may cause overheating, electrical shock, or fire. 2) Do not use locally purchased electrical parts inside the product. (Do not branch the power for the drain pump, etc., from the terminal block.) Doing so may cause electric shock or fire. 3) Be sure to install an earth leak detector. (One that can handle higher harmonics.
SiBE04-624 Installation Manual 1) Use the following method when installing a single core wire. Screw Flat washer A single core wire Arrow view 2) Use the following method when installing the round crimp-style terminal.
System Configuration SiBE04-624 2. System Configuration After the installation and test operation of the room air conditioner have been completed, it should be operated and handled as described below. Every user would like to know the correct method of operation of the room air conditioner, to check if it is capable of cooling (or heating) well, and to know a clever method of using it.
SiBE04-624 Instruction 3. Instruction 3.1 Safety Precautions Safety Precautions • • • • Keep this manual where the operator can easily find them. Read this manual attentively before starting up the unit. For safety reason the operator must read the following cautions carefully. This manual classifies precautions into WARNING and CAUTION. Be sure to follow all precautions below: they are all important for ensuring safety.
Instruction 3.2 SiBE04-624 Names and Functions of Parts Names of Parts Indoor Unit 1. 2. 3. 4. 5. 6. 7. Streamer unit: (page 20-22.) Deodorizing filter for streamer (Black) Air inlet Front panel Upper panel Air filter (Light blue): (page 19.) Titanium apatite photocatalytic air-purifying filter (Black): (page 20-22.) 8. Air supply filter (Yellow): (page 23.) 9. Horizontal louver: (page 10.) 10. Vertical louver: Indoor Unit 3 4 5 2 1 6 7 • In the air outlet. (page 10.) 11. Air outlet 12.
SiBE04-624 Instruction Remote Controller Remote Controller 1. Transmitter / Receiver 2. Display: • It displays the current settings. 1 (In this illustration, each section is shown with all its displays ON for the purpose of explanation.) * The protection sheet is on the display to protect against scratch. Remove it before use. 3. INFORMATION button: • Displays the indoor temperature and humidity and the outdoor temperature. (page 16.) 4. COUNTDOWN OFF TIMER button: • Sets time to stop. (page 12.) 5.
Instruction 3.3 SiBE04-624 Preparation before Operation Preparation Before Operation To set the batteries 1. Press with a finger and slide the cover to take it off. 2. Set two dry batteries (AAA). 3. Set the cover as before. Position + and – correctly! 2 • Characters on the display will blink. Set the present time. (page 6.) 3 How to use 1 • To use the remote controller, aim the transmitter at the indoor unit.
SiBE04-624 Instruction To set the clock * Time cannot be set during unit operation. 1. Press “ ”. Do not hold the button. is displayed. blinks. 2. Press “ ” to set the clock to the present time. • Holding the button changes the time faster. 3. Press “ ”. 2 blinks. is displayed. • Setting is complete. 1, 3 ATTENTION If other messages than time appear on the display with the step 1 operation, do not operate the button for about 60 seconds. The display will return to normal.
Instruction 3.4 SiBE04-624 Cooling · “SARARA” DRYING Operation COOLING · “SARARA” DRYING Operation COOLING operation • To lower temperature 1. Press “ ”. Green • To lower temperature and humidity 2. Press “ ”. Yellow * It is recommended to switch to COOLING operation if you want to lower temperature preferentially during DRY COOLING operation. 4 “SARARA” DRYING operation • To lower humidity 3. Press “ 1 ”. Yellow To change the airflow direction and airflow rate (page 10.
SiBE04-624 3.5 Instruction Heating · “URURU” HUMIDIFYING Operation HEATING · “URURU” HUMIDIFYING Operation HEATING operation • To raise temperature 1. Press “ ”. Red • To raise temperature and humidity 2. Press “ ”. Orange “URURU” HUMIDIFYING operation 4 • To raise humidity 3 3. Press “ ”. Orange 1 To change the airflow direction and airflow rate (page 10.) 2 To stop operation 4. Press “ ”. The multi-colored indicator of the unit will go off.
Instruction 3.6 SiBE04-624 AUTO / MOISTURIZING Operation AUTO Operation After pressing the AUTO button, the air conditioner will operate according to room conditions in an automatic mode. 1. Press “ ”. • HEATING: Red • COOLING: Green • The color of the multi-colored indicator changes according to the actual operations. • When the AUTO button is pressed, the color according to the operation selected by the air conditioner will light up.
SiBE04-624 3.7 Instruction Adjusting Airflow Direction · Comfort Airflow Mode · Cooling Breeze · Airflow Rate ADJUSTING AIRFLOW DIRECTION · COMFORT AIRFLOW MODE · COOLING BREEZE · AIRFLOW RATE More comfortable airflow is provided with airflow direction and airflow rate adjustment . To change vertical and horizontal airflow directions 1. Press “ ” or “ ” during operation. (In case of vertical direction) • The airflow direction indication will display.
Instruction 3.8 SiBE04-624 FLASH STREAMER AIR PURIFYING · FRESH AIR SUPPLY VENTILATION Operation / HOME LEAVE VENTILATION FLASH STREAMER AIR PURIFYING · FRESH AIR SUPPLY VENTILATION Operation The absorption power of the Titanium apatite photocatalytic air-purifying filter and air supply filter and the resolving power of the streamer discharge reduce bad odors and viruses, cleaning the room air. 1. Press “ ”.
SiBE04-624 3.9 Instruction TIMER Operation TIMER Operation Timer functions are useful for automatically switching the air conditioner on or off at night or in the morning. The timer operates only one time. Set the timer for each use. COUNTDOWN OFF TIMER operation Set the time to stop. 1. Press “ ”. • The displayed time, which changes in Orange 0.5 hour increments every time the button is pressed, is set. The time from 0.5 to 9.5 hours can be set.
Instruction SiBE04-624 3.10 COMFORT SLEEP / POWERFUL Operation COMFORT SLEEP Operation Controlling the room temperature supports comfort sleep and pleasant wake-up. • Check that the clock is correct. If not, set the clock to the present time. (page 6.) • The present time display disappears when the COMFORT SLEEP operation is set. 1. Press “ ” during operation. blinks. is displayed. 2. Press “ ” to set the time to wake up. • Pressing the button changes the time in 10 minutes.
SiBE04-624 Instruction 3.11 SET UP SET UP Sets the unit operation and remote controller display according to your preference. 1. Hold “ ” for about 2 seconds. • The setup mode will be activated. 2. The item will change every time “ 3. The settings will change every time “ ” is pressed. ” is pressed respectively. • Direct the remote controller toward the main unit to make settings. Item CHILD PROOF LOCK ON/OFF is default.
Instruction SiBE04-624 3.12 MOLD PROOF Operation MOLD PROOF Operation Dries the inside of the unit to prevent mold and odors. Auto operation (approximately once every 2 weeks) If the unit is set to “MOLD PROOF ON”, the MOLD PROOF operation will start automatically after the unit has been run in “SARARA” DRYING or COOLING mode, depending on the amount of time the unit has been run (approximately once every 2 weeks). (page 14.) The default is set to “MOLD PROOF OFF”. Manual operation 1. Hold “ running.
SiBE04-624 Instruction 3.13 MOLD SHOCK Operation / INFORMATION DISPLAY MOLD SHOCK OUT Operation This mode dehumidifies the air in the room and prevents mold growth. Continuous drying operation lowers the room humidity rapidly. 1. Hold “ ” for about 2 seconds while the unit is not running. The MOLD SHOCK OUT operation will start. The display will return to normal. • The front panel and horizontal louver will open.
Instruction SiBE04-624 3.14 Care and Cleaning Care and Cleaning Quick reference for cleaning CAUTION • Before cleaning, be sure to stop the operation and turn the breaker OFF. • Do not touch the metal parts in the indoor unit. Doing so may cause injury. 1. Front panel Wipe off if it gets dirty. (Cleaning : page 18.) 6 2. Air filter Vacuum/Rinse if “CLEAN FILTER” displays. (Cleaning : page 19.) 3. Air supply filter (Yellow) Cannot be washed with water. Vacuum once in about 3 months.
SiBE04-624 Instruction Attaching and removing the front panel CAUTION • Only open the front panel after turning the unit off. Opening the panel during operation may cause the panel to fall off. 1. Open the front panel. Front panel • Placing a finger on the panel tab on either side of the front panel. 2. Remove the front panel. • Spread out the shaft hole and remove Rotating the rotating shaft. (Both left and right sides.) shaft Rotating shaft Shaft hole Shaft hole 3. Attach the front panel.
Instruction SiBE04-624 Care and Cleaning Cleaning the air filter (If “ ” is displayed on the remote controller) 1. Open the front panel. • Open the front panel by placing a finger on the panel tab on either side Supporting plate of the front panel and then secure it using the supporting plate on the right. 2. Pull out the air filters. • Push a little upwards the air filter. Air filter • Pull the air filter down. 3. Clean the air filter.
SiBE04-624 Instruction Attaching and removing the deodorizing filter for streamer, Titanium apatite photocatalytic air-purifying filter, streamer unit 1. Open the front panel and pull out the air filter. (page 19.) Titanium apatite photocatalytic air-purifying filter Streamer unit Deodorizing filter for streamer Removing Attaching 2. Remove the deodorizing filter for streamer. 5. Replace the streamer unit to its original position. • Discharge the tab and pull out the knob in a downward direction.
Instruction SiBE04-624 Care and Cleaning Cleaning the deodorizing filter for streamer, Titanium apatite photocatalytic air-purifying filter and streamer unit (If “ ” is displayed on the remote controller) Attaching and removing each part (page 20.) Deodorizing filter for streamer / Titanium apatite photocatalytic air-purifying filter • Do not use cleaning agents. This may lower deodorizing Vacuum dusts, and soak in warm water or water for about 10 to 15 minutes if dirt is heavy.
SiBE04-624 Instruction How to replace Deodorizing filter for streamer Titanium apatite photocatalytic air(Once in about 3 years) purifying filter (Once in about 3 years) • Remove from the filter frame and replace the filter with a new one. • Discharge the 4 tabs of the filter frame and replace the filter with a new one.
Instruction SiBE04-624 Care and Cleaning Attaching, cleaning and replacing the air supply filter (Clean once in about 3 months and replace once in about 1 year.) Cannot be washed with water. 1. Open the front panel to pull out the air filter and Titanium apatite photocatalytic airpurifying filter. (page 19, 20.) 2. Pull out the air supply filter. Tabs (4 locations) In upward direction Filter frame Air supply filter • Hold the knob to pull up. Filter frame Set the filter with the tape side down.
SiBE04-624 Instruction NOTE The deodorizing filter for stream and the titanium apatite photocatalytic air-purifying filter should be cleaned regularly. We recommend replacing the filter in the following situations. • If it is damaged during cleaning because it is made of paper. • If it is very dirty after long use. Item Air purifying filter set Part No.
Instruction SiBE04-624 3.15 Troubleshooting Trouble Shooting TROUBLE SHOOTING These cases are not troubles. The following cases are not air conditioner troubles but have some reasons. You may just continue using it. Case Explanation Operation does not start soon. • When ON/OFF button was pressed soon after operation was stopped. • When the mode was reselected. • This is to protect the air conditioner. Hot air does not flow out soon after the start of heating operation.
SiBE04-624 Instruction Check again. Please check again before calling a repair person. Case The air conditioner does not operate. (Multi-colored indicator lamp is off.) The air conditioner does not operate. (Multi-colored indicator lamp flashes.) Check • • • • Hasn’t a breaker turned OFF or a fuse blown? Isn’t it a power failure? Are batteries set in the remote controller? Is the timer setting correct? • Turn off the breaker and then start the unit using the remote controller.
Instruction SiBE04-624 Trouble Shooting Call the service shop immediately. WARNING When an abnormality (such as a burning smell) occurs, stop operation and turn the breaker OFF. Continued operation in an abnormal condition may result in troubles, electric shocks or fire. Consult the service shop where you bought the air conditioner. Do not attempt to repair or modify the air conditioner by yourself. Incorrect work may result in electric shocks or fire.
SiBE04-624 Instruction FAULT DIAGNOSIS BY REMOTE CONTROLLER In the ARC447A1, the temperature display sections on the main unit indicate corresponding codes. 1. When the CANCEL button is held down for 5 seconds, a “ ature display section. ” indication flashes on the temper- CANCEL button It cancels the timer setting. 2. Press the CANCEL button repeatedly until a continuous beep is produced. • The code indication changes as shown below, and notifies with a long beep.
Instruction 134 SiBE04-624 System Configuration
SiBE04-624 Part 6 Service Diagnosis 1. Convenient Service Check Function ...................................................137 2. Troubleshooting ..................................................................................139 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 2.10 2.11 2.12 2.13 2.14 2.15 2.16 2.17 2.18 2.19 2.20 2.21 2.22 2.23 2.24 2.25 2.26 2.27 2.28 2.29 2.30 2.31 2.32 2.33 2.34 2.35 2.36 2.37 2.38 2.39 Error Code Indication by Remote Controller ........................................
SiBE04-624 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 3.10 3.11 3.12 3.13 3.14 3.15 3.16 3.17 136 Installation Condition Check.................................................................203 Outdoor Fan System Check (DC Motor) ..............................................203 Power Supply Waveform Check...........................................................204 Capacitor Voltage Check......................................................................204 Main Circuit Electrolytic Capacitor Check ..........
SiBE04-624 Convenient Service Check Function 1. Convenient Service Check Function Failure diagnosis with operation lamp The operation lamp on the display of the indoor unit flashes when any of the following failure is detected. 1. When a protection device of the indoor or outdoor unit is activated or when the thermistor malfunctions and the machine does not work. 2. When a signal transmission error occurs between the indoor and outdoor units.
Convenient Service Check Function SiBE04-624 Failure diagnosis by LED indication The following failure diagnosis can be done by LED indication on the outdoor unit PCB. 1. The outdoor unit has 2 green LED(LED A, LED5) on the PCB. The flashing green LED indicates "in order" condition. The turned ON or OFF LED indicates the failure related to the microcomputer. PCB is set upside down (with backside up) to improve its quality. LED can be visually inspected through a inspection slit.
SiBE04-624 Troubleshooting 2. Troubleshooting 2.1 Error Code Indication by Remote Controller * Various cases may be possible. Code Unit Basic Failure Diagnosis A1 A5 A6 AH C4 C7 C9 CC E1 E5 E6 E7 E8 EA F3 F6 H0 H1 H6 H8 H9 J3 J6 L3 L4 L5 P4 P9 PA PH U0 U2 U4 Service Diagnosis Indoor Outdoor Description Air conditioner does not run. Air conditioner runs but does not get cooling (heating). When operation starts, safety breaker works. Air conditioner makes big noise and vibration.
Troubleshooting Code U7 UA – 140 SiBE04-624 Unit System Indoor System Description Signal transmission error on outdoor unit PCB Reference page 194 Incompatible power supply between indoor unit and outdoor unit 162 Incomplete setting for hose length Lights-out of microcomputer status lamp 163 201 Service Diagnosis
SiBE04-624 2.2 Troubleshooting Air conditioner does not run. Method of Malfunction Detection Malfunction Decision Conditions Supposed Causes Service Diagnosis Power supply is OFF Improper power supply voltage Improper connection of wire Incorrect combination of indoor unit and outdoor unit Battery shortage of remote controller Invalid address setting Protection device works (dirty air filter, insufficient gas, over filling, mixed air, etc.
Troubleshooting SiBE04-624 Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Is the power supply plug inserted into the outlet or the breaker for the power supply breaker ON? NO Insert the power supply plug into the outlet. Turn on the breaker for the power supply. YES NO Do the other electric appliances work? YES Power failure? YES Wait till the power failure restored.
SiBE04-624 2.3 Troubleshooting Air conditioner runs but does not get cooling (heating). Method of Malfunction Detection Malfunction Decision Conditions Supposed Causes Service Diagnosis Incorrect temperature setting Incorrect combination of indoor unit and outdoor unit Blocked air filter Insufficient power Refrigerant piping is too long Improper setting of piping length Defective field piping (squeezed, etc.
Troubleshooting SiBE04-624 Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Is the set temperature correct? NO Thermostat off Set the temperature properly. YES Is there required installation space? (Isn't it short circuited?) NO Secure required space. YES Is the indoor unit compatible for connecting with the outdoor unit? NO Check the compatibility. Arrange for a correct combination.
SiBE04-624 2.4 Troubleshooting When operation starts, safety breaker works. Method of Malfunction Detection Malfunction Decision Conditions Supposed Causes Service Diagnosis Insufficient capacity of safety breaker Earth leakage breaker is too sensitive Not exclusive circuit The supply voltage is not within rated voltage ±10%.
Troubleshooting SiBE04-624 Troubleshooting Caution Check No.29 Refer to 212 Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. [Power supply] Is the NO capacity of safety breaker as specified? Replace the safety breaker to a specified one. YES Does the earth leakage breaker work? YES Increase the set value of the earth leakage current on the breaker (or replace the breaker). NO Is it an exclusive circuit? NO Use the exclusive circuit.
SiBE04-624 2.5 Troubleshooting Air conditioner makes big noise and vibration. Method of Malfunction Detection Malfunction Decision Conditions Supposed Causes Piping length is too short Mounting wall is too thin Insufficient vibration prevention measures Deformation of the unit Improper quantity of refrigerant Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred.
Troubleshooting 2.6 SiBE04-624 Air does not humidified enough. Method of Malfunction Detection Malfunction Decision Conditions Supposed Causes 148 Hose length is not set Incorrect setting Short circuited at outdoor unit Blocked humidification filter Insufficient heat insulation of duct Indoor ventilation is made too often Ceiling is very high.
SiBE04-624 Troubleshooting Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Does the length of humidification hose exceed the specified length? Exceeds. Correct it within the specified length. Explain it to the user. Under specified length. Does the set hose length match with the field hose length? It does not match. Reset the hose length by remote controller. It matches. Is the humidification filter blocked? Blocked.
Troubleshooting 2.
SiBE04-624 2.8 Troubleshooting Peak-cut Control or Freeze-up Protection Remote Controller Display A5 Method of Malfunction Detection Peak-cut control (high pressure control) Malfunction Decision Conditions Peak-cut control During heating operation, the temperature detected by the indoor heat exchanger thermistor is used for the high pressure control (stop, outdoor fan stop, etc.).
Troubleshooting SiBE04-624 Troubleshooting Caution Check No.2 Refer to P.202 Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Check air passages Is there any short-circuit? YES Reserve the space for the air passages. NO Check the air filter for dirtiness YES (dirty) Is it very dirty? Clean the air filter. Not much Check indoor unit heat exchanger for dirtiness YES (dirty) Is it very dirty? Clean the heat exchanger. Not much Check No.
SiBE04-624 2.9 Troubleshooting Fan Motor System (DC Motor) Fault Remote Controller Display A6 Method of Malfunction Detection The fan speed detected by the Hall IC during operation of high-pressure fan motor is used to determine abnormal fan operation.
Troubleshooting SiBE04-624 Troubleshooting Caution Check No.18 Refer to P.210 Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Turn off the power supply (Turn off the breaker). * Connect the connector again for ensuring the connection. Check the connector connection (S1). Is it normal? NO Caution If the connector is disconnected while the power ON, the motor will be broken. (Turn power off when connecting the connector.
SiBE04-624 Troubleshooting 2.10 Streamer Unit Fault Remote Controller Display AH Method of Malfunction Detection Malfunction Decision Conditions If the error repeats 3 times in air purifying operation. Clearing condition: Continuous run for about 2 minutes (normal). Supposed Causes Short circuit caused by the dust or drip of water on the streamer unit electrode part. Scratch or crack in the harness for the streamer unit.
Troubleshooting SiBE04-624 Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Dust or drip of water is on the streamer unit. YES Clean the streamer unit. NO Does the multi-monitor LED blink about 1 minute after air purifying operation starts. NO Clean the streamer unit. YES Turn off the power supply (Turn off the breaker). Is the streamer unit installed surely. NO Install it surely.
SiBE04-624 Troubleshooting 2.11 Thermistor System Fault Remote Controller Display C4, C9 Method of Malfunction Detection Thermistor fault is detected based on the temperature determined by each thermistor Malfunction Decision Conditions When power is supplied and the input of thermistor is 4.96 V or more or 0.04 V or less * (for reference) In case of 120 Ω (equivalent to 212°C) or less or 1860 kΩ (equivalent to –50°C) or more Supposed Causes Troubleshooting Chart Check No.2 Refer to P.
Troubleshooting SiBE04-624 2.12 Front Panel Open / Close Fault C7 Remote Controller Display Method of Malfunction Detection Malfunction Decision Conditions The system will be shut down when the error occurs twice. Supposed Causes Malfunction of the reduction motor Malfunction or deterioration of the front panel mechanism Malfunction of the limit switch Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred.
SiBE04-624 Troubleshooting 2.13 Humidity Sensor Fault Remote Controller Display CC Method of Malfunction Detection Sensor faulty is detected by input value. Malfunction Decision Conditions When the input from a temperature sensor is 4.96 V or more or 0.04 V or less* Supposed Causes Improper connector connection Defective indoor control PCB Defective humidity sensor PCB Troubleshooting Caution Check No.27 Refer to P.
Troubleshooting SiBE04-624 2.14 Signal Transmission Error (Indoor Unit - Outdoor Unit) Remote Controller Display U4 Method of Malfunction Detection The data sent from the outdoor unit is checked for problem. Malfunction Decision Conditions When the data sent from the outdoor unit can not be received without error, or when the disable status of signal transmission continues for 15 sec. and the same status continuously repeats 3 times.
SiBE04-624 Troubleshooting Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Check the relay wire between the indoor unit and the outdoor unit for color and number Is there any improper wiring? YES * For the machine with standby power saving function, perform setting of fan operation to release the stand-by power function.
Troubleshooting SiBE04-624 2.15 Incompatible Power Supply between Indoor Unit and Outdoor Unit Remote Controller Display UA Method of Malfunction Detection Check the incompatible power supply between indoor unit and outdoor unit by using signal transmission. Method of Malfunction Detection In case that the indoor intake model is connected to outdoor intake model.
SiBE04-624 Troubleshooting 2.16 Incomplete Setting for Hose Length Remote Controller Display UA Method of Malfunction Detection This fault occurs when the humidification hose length is not stored in the EEPROMs of the indoor unit and the outdoor unit. (Hose length is not stored at initial power on.) Malfunction Decision Conditions When the humidification hose length is not stored in EEPROMs of the indoor unit and the Supposed Causes Hose length is not set.
Troubleshooting SiBE04-624 2.17 Outdoor Unit PCB Fault Remote Controller Display E1 Outdoor Unit LED Display A5 55 Method of Malfunction Detection Detect within the programme of the microcomputer that the programme is in good running Malfunction Decision Conditions When the programme of the microcomputer is in bad running order. Zero-cross signal can not be detected.
SiBE04-624 Troubleshooting 2.18 OL Activation (Compressor Overload) Remote Controller Display E5 Method of Malfunction Detection A compressor overload is detected through compressor OL. Malfunction Decision Conditions If the compressor OL is activated twice, the system will be shut down. The error counter will reset itself if this or any other error does not occur during the following Supposed Causes 60-minute compressor running time (total time).
Troubleshooting SiBE04-624 2.19 Compressor Lock Remote Controller Display E6 Outdoor Unit LED Display A5 55 (-) Method of Malfunction Detection Judging from current waveform generated when high-frequency voltage is applied to the compressor. Malfunction Decision Conditions The machine is shut down when the fault count reaches 16. Clear condition: Continuous operation for 11 min.
SiBE04-624 Troubleshooting 2.20 DC Fan Lock Remote Controller Display E7 Outdoor Unit LED Display A5 55 (-) Method of Malfunction Detection Identify the fan motor system fault based on fan speed detected by Hall IC during high pressure fan motor running. Malfunction Decision Conditions When the fan motor is running, the fan does not rotate for 60 sec. or more. Shut down when the error repeats 16 times Clear condition: The fan continuously rotates for 11 min.
Troubleshooting SiBE04-624 2.21 Input Over Current Detection Remote Controller Display E8 Outdoor Unit LED Display A5 Method of Malfunction Detection Detect an input overcurrent by checking the inverter power consumption or the input current detected by CT with the compressor running. Malfunction Decision Conditions When 14 A or more of inverter power consumption or CT input continues for 5 sec. The compressor stops if the error occurs, and restarts automatically after 3 minutes standby.
SiBE04-624 Troubleshooting Troubleshooting Caution Check No.3 Refer to P.203 Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. *Input over current may be caused by improper wiring inside the machine. If the machine stops due to input over current after connecting or disconnecting wires to replace part, check wiring for proper connection. Get restarted and measure the input current Check No.11 Refer to P.
Troubleshooting SiBE04-624 2.22 Four Way Valve Fault Remote Controller Display EA Outdoor Unit LED Display A5 Method of Malfunction Detection The room temperature thermistor, the indoor heat exchanger thermistor, the outdoor air thermistor, and the outdoor heat exchanger thermistor are checked to see if they function within their normal ranges in the operating mode.
SiBE04-624 Troubleshooting Troubleshooting Caution Check No.2 Refer to P.202 Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Does the coil of 4-way valve get out of place (loosen)? YES Rectify it. NO Check No.12 Refer to P.205 Is the harness disconnected from connector? YES Reconnect properly. NO Check No.31 Refer to P.213 Coil of 4-way valve and harness conductivity check Disconnect the harness from the connector.
Troubleshooting SiBE04-624 2.23 Discharge Pipe Temperature Control Remote Controller Display F3 Outdoor Unit LED Display A5 55 ( - ) Method of Malfunction Detection Discharge pipe temperature control (stop, frequency attenuation, etc.) is executed based on the temperature detected by the discharge pipe thermistor. Malfunction Decision Conditions The compressor stops when the discharge pipe temperature is 118°C or more.
SiBE04-624 Troubleshooting 2.24 High Pressure Control in Cooling Remote Controller Display F6 Outdoor Unit LED Display A5 Method of Malfunction Detection During cooling, high pressure control (stop, frequency attenuation, etc.) is executed according to the temperature detected by the heat exchanger thermistor. Malfunction Decision Conditions During cooling, when the temperature detected by the heat exchanger thermistor is 63°C or more. (Fault condition is cleared when the temperature is below 52°C.
Troubleshooting SiBE04-624 Troubleshooting Caution Check No.2 Refer to P.202 Check No.3 Refer to P.203 Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Check installation space Check No. 3 Installation condition check OK Check No. 5 Outdoor fan system check Check No.5 Refer to P.203 Check No.16 Refer to P.208 NG NG Change the position of air discharge grille. Change installation position. Clean the heat exchanger. Replace fan motor.
SiBE04-624 Troubleshooting 2.25 Compressor Sensor System Fault Remote Controller Display H0 Outdoor Unit LED Display A5 55 ( - ) Method of Malfunction Detection Fault condition is identified by DC current which is detected before compressor startup. Malfunction Decision Conditions When the DC current before compressor startup is other than 0.5 to 4.
Troubleshooting SiBE04-624 2.26 Damper Fault Remote Controller Display H1 Outdoor Unit LED Display A5 55 Method of Malfunction Detection Detected by the limit switch (LS) in the humidification unit. Malfunction Decision Conditions Limit switch does not turn on or off when the operation of humidification unit starts or Supposed Causes finishes.
SiBE04-624 Troubleshooting 2.27 Position Sensor Fault Remote Controller Display H6 Outdoor Unit LED Display A5 Method of Malfunction Detection Startup failure of the compressor is identified by rpm information of the compressor and by electric component position detector. Malfunction Decision Conditions When the compressor does not run for 15 sec.
Troubleshooting SiBE04-624 Troubleshooting Caution Check No.16 Refer to P.208 Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Check the power supply Check No. 16 Discharge pressure check Check No.29 Refer to P.212 Judge Check No.14 Refer to P.206 NG Replace stop valve. OK Check No.
SiBE04-624 Troubleshooting 2.28 DC Voltage / DC Current Sensor Fault Remote Controller Display H8 Outdoor Unit LED Display A5 55 ( - ) Method of Malfunction Detection DC voltage or DC current sensor system fault is identified based on the compressor operation frequency and the input current detected by the product of DC current and DC voltage. Malfunction Decision Conditions When the compressor operation frequency is more than 62 Hz and when the input current is less than 0.75 A for 90 sec.
Troubleshooting SiBE04-624 2.29 Thermistor System Fault Remote Controller Display P4, J3, J6, H9 Outdoor Unit LED Display A5 5 - Method of Malfunction Detection This fault is identified based on the thermistor input voltage to the microcomputer. A thermistor fault is identified based on the temperature detected by each thermistor. Malfunction Decision Conditions When power is supplied and the thermistor input is 4.98 V or more or when the thermistor input is 0.02 V or less for 5 sec.
SiBE04-624 Troubleshooting Troubleshooting Caution Check No.2 Refer to P.202 Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Turn on the power supply again Does the remote controller display the error code again? NO Reconnect properly. YES Check No.2 Thermistor resistance check Is it OK? NO Replace the thermistor. YES Check No.2 Thermistor resistance check Is it OK? NO Replace the thermistor. YES Replace the outdoor unit PCB.
Troubleshooting SiBE04-624 2.30 Abnormal Temperature in Electrical Box Remote Controller Display L3 Outdoor Unit LED Display A5 Method of Malfunction Detection Temperature rise in the electrical box is identified based on the temperature of the radiation fin detected by the fin thermistor with the compressor off. Malfunction Decision Conditions When the temperature of the radiation fin is 122°C or more during the compressor off. (When the temperature drops below 113°C, fault condition is cleared.
SiBE04-624 Troubleshooting Troubleshooting Caution Check No.2 Refer to P.202 Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. (Note on resetting power supply) To reset the machine, power off status need to continue at least 30 sec. WARNING Turn off the power and turn it on again.
Troubleshooting SiBE04-624 2.31 Temperature Rise in Radiation Fin Remote Controller Display L4 Outdoor Unit LED Display A5 Method of Malfunction Detection Temperature rise in the radiation fin is identified based on the temperature of the radiation fin detected by the fin thermistor with the compressor on. Malfunction Decision Conditions The compressor stops when the radiation fin temperature is 86 °C or more.
SiBE04-624 Troubleshooting Troubleshooting Caution Check No.2 Refer to P.202 Check No.3 Refer to P.203 Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. WARNING Turn off the power supply and turn it on again to get the system started. Does the fault appear again? To cool down the electric components, the outdoor unit fan gets started when the radiation fin temperature rises above 120 ˚C and stops when the temperature falls below 113 ˚C.
Troubleshooting SiBE04-624 2.32 Output Overcurrent Remote Controller Display L5 Outdoor Unit LED Display A5 55 Method of Malfunction Detection An output overcurrent is detected by checking the current that flows in the inverter DC section. Malfunction Decision Conditions A position signal error occurs while the compressor is running. A speed error occurs while the compressor is running.
SiBE04-624 Troubleshooting Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. *Output overcurrent may caused by improper wiring inside the machine. If the machine stops due to output overcurrent after connecting or disconnecting wires to replace part, check wiring for proper connection. Check No.3 Refer to P.203 Is the stop valve fully opened? NO Open the stop valve fully. YES Check No.15 Refer to P.207 Check No.
Troubleshooting SiBE04-624 2.33 Insufficient Gas Remote Controller Display U0 Outdoor Unit LED Display A5 55 ( - ) Method of Malfunction Detection Gas shortage detection I: Gas shortage is detected by checking the input current value and the compressor running frequency. If the gas is short, the input current is smaller than the normal value. Gas shortage detection III: Gas shortage is detected by checking the difference between ambient temperature and heat exchanger temperature.
SiBE04-624 Troubleshooting Check No.2 Refer to P.202 Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Is the stop valve opened? NO Open the stop valve. YES Check gas leakage. Check No.17 Refer to P.209 Oil oozing at relay pipe connections? YES Repair flared portion of piping or replace square union.
Troubleshooting SiBE04-624 2.34 Over Voltage Protection / Low Voltage Protection Remote Controller Display U2 Outdoor Unit LED Display A5 55 ( - ) Method of Malfunction Detection Detect an abnormal increase or drop of voltage by the detection circuit or DC voltage detection circuit.
SiBE04-624 Troubleshooting 2.35 Outdoor Unit PCB Fault or Communication Circuit Fault Remote Controller Display U4 Outdoor Unit LED Display A5 Method of Malfunction Detection 1. Detect within the programme of the microcomputer that the programme is in good running order. 2. When indoor-outdoor unit signal transmission can not be performed for more than 15 sec. 3. Detection of the presence or absence of zero-cross signal. Malfunction Decision Conditions 1.
Troubleshooting SiBE04-624 Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Check indoor unit also, because a comunication circuit fault may be caused by the problem related to the indoor unit. Check supply voltage Rated voltage? NO Rectify the power supply. YES Check varistor on the outdoor unit PCB YES Replace varistor.
SiBE04-624 Check No.8 Refer to P.204 Troubleshooting Continued from the previous page Does LED A turn off? NO Check grounding YES Grounded? Check No.8 Power supply waveform check Disturbance? YES NO Carry out grounding work. The cause seems to be an external factor other than failure of the outdoor unit PCB. Investigate source of noise and take measures. YES Investigate the cause of disturbance and take remedial action. NO Turn off the power supply. Disconnect No.
Troubleshooting SiBE04-624 2.36 Signal Transmission Error on Outdoor Unit PCB Remote Controller Display U7 Outdoor Unit LED Display A5 55 ( - ) Method of Malfunction Detection Communication error between microcomputer mounted on the main body and inverter. Malfunction Decision Conditions When the data sent from the microcomputer of the inverter can not be received 15 times successively or for 15 sec, the machine shuts down.
SiBE04-624 Troubleshooting Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Check flashing interval of LED 5 Is it 0.5 sec.? (same as LED A) YES (0.5 sec. interval) NO (0.2 sec. interval) Check voltage between +5V and GND 5 V±0.5 V NO Replace outdoor unit PCB. YES Power on again Is the fault repeated? NO YES Replace outdoor unit PCB.
Troubleshooting SiBE04-624 2.37 Fan Motor System Fault / Fan Lock Remote Controller Display P9 Outdoor Unit LED Display A5 55 Method of Malfunction Detection During humidification fan motor running, fan motor system fault is identified based on the fan speed (rpm) detected by Hall IC. Malfunction Decision Conditions When fan speed does not reach 100 rpm within 7 sec. after fan motor start up.
SiBE04-624 Troubleshooting 2.38 Heater Wire Fault Remote Controller Display PA Outdoor Unit LED Display A5 Method of Malfunction Detection A fault is identified when the outlet temperature of humidification fan does not reach a certain temperature within a given time after the heater turned on. Malfunction Decision Conditions When the temperature detected by the thermistor is lower than the outdoor temperature (at heater turned off) + 6°C, and this condition continues for 30 min.
Troubleshooting SiBE04-624 Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Check No.2 Refer to P.202 Is the supply voltage appropriate? NO Modify supply voltage. YES Power supply OFF Is heater well cooled? NO Cool it down. YES Measure resistance between heater connectors Is the heater resistance appropriate? [ At normal temperature: 44.6Ω±10% ] NO Replace heater unit.
SiBE04-624 Troubleshooting 2.39 Humidification Fan Outlet Thermistor Fault / Abnormal Heater Temperature Remote Controller Display PH Outdoor Unit LED Display A5 Method of Malfunction Detection Detect short circuit and wire breakage of humidification thermistor. When humidification fan outlet temperature becomes high, this condition is identified as an abnormal heater temperature fault. Malfunction Decision Conditions When power is supplied and the thermistor input is 4.90 V or more, or 0.
Troubleshooting SiBE04-624 Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Check No.2 Refer to P.202 Check connector for proper connection Check No.5 Refer to P.203 Is it OK? NO Reconnect properly. YES Check No.2 Thermistor resistance check *The humidification thermistor is exclusive for fan outlet temperature. NO Is it OK? Replace the thermistor.
SiBE04-624 Troubleshooting 2.40 Lights-out of Microcomputer Status Lamp Remote Controller Display — Outdoor Unit LED Display A1 Method of Malfunction Detection When a microcomputer fault is detected, LED A or LED 5 turns off. 51 ( - ) Malfunction Decision Conditions Supposed Causes Outdoor unit PCB is not power supplied Power supply failure due to noise Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred.
Check SiBE04-624 3. Check 3.1 Thermistor Resistance Check Check No.2 Remove the connectors of the thermistors on the PCB, and measure the resistance of each thermistor using tester. The relationship between normal temperature and resistance is shown in the graph and the table below. Thermistor R25°C=20kΩ B=3950 Temperature (°C) –20 –15 –10 –5 0 5 10 211.0 (kΩ) 150 116.5 88 67.2 51.9 40 15 20 25 30 35 40 45 50 31.8 25 20 16 13 10.6 8.7 7.
SiBE04-624 3.2 Check Installation Condition Check Check No.3 Installation condition check Check the allowable dimensions of the air suction and discharge area. Normal Does the discharged air from other outdoor unit cause an increase of the suction air temperature? Abnormal Change the position of the air discharge grille or the installation location. YES Change the position of the air discharge grille or the installation location.
Check 3.4 SiBE04-624 Power Supply Waveform Check Check No.8 Check the voltage waveform between power supply terminals on the terminal board for disturbance using oscillo-tester. Check to see if the power supply waveform is a sine wave (Fig.1). Check to see if there is waveform disturbance near the zero cross (sections circled in Fig.2) [Fig.1] 3.5 [Fig.2] Capacitor Voltage Check Check No.10 Before this checking, be sure to check the main circuit for short-circuit (Check No 29).
SiBE04-624 3.6 Check Main Circuit Electrolytic Capacitor Check Check No.11 Do not touch the live parts within 10 min. after the breaker is turned off. Even after that, when you touch the parts, check that there is no DC voltage with a tester. Check the conductivity with a tester. It is OK if the tester shows good conductivity when pins are replaced. Set the tester to the resistance measuring range If the pointer swings and returns, the electrolytic capacitor is OK.
Check 3.8 SiBE04-624 “Inverter Checker” Check Check No.14 1. Characteristics If abnormal stop occurs due to compressor startup failure or overcurrent output when using inverter unit, it is difficult to judge it results from the compressor failure or other failure (control PC board, power transistor, etc.). The inverter analyzer makes it possible to judge the cause of trouble easily and securely. (Connect this analyzer as a quasi compressor instead of compressor and check the output of inverter) 2.
SiBE04-624 Check Caution When the output frequency is low, the LED flashes slowly. As the frequency increases, the LED flashes quickly. (It looks like the LED is lit) If the operation is carried out with no load (the condition of the compressor is disconnected), some of units may stop operation with “CT system error” (due to no electric current) or “startup failure” (because the compressor does not turn). In this case, check if the LED is flashing during “operation” to “malfunction stop”.
Check SiBE04-624 3.10 Discharge Pressure Check Check No.16 Discharge pressure check Is it high? NO Replace the compressor. YES Is the stop valve open? NO Set the stop valve open. YES Is the connecting piping deformed? YES Replace the field piping. NO Is the heat exchange filter dirty? YES Clean it. NO Replace the compressor.
SiBE04-624 Check 3.11 Electronic Expansion Valve Check Check No.17 Check the electronic expansion valve (EV) as follows: 1. Check if the EV connector properly inserted into the control PCB. Collate the number of EV main body with that of the connector. 2. Check to see that clatter (latching sound) is heard from all of the EVs when turning on the power supply again after turning it off. 3. If there are EVs which do not sound clatter, disconnect the connectors of these EVs and check them for conductivity.
Check SiBE04-624 3.12 Indoor Unit PCB Output Check Check No.18 1. Check for proper connection. 2. Check that the supply voltage applied to the motor is output between No.4 pin and No.7 pin). 3. Check that the motor control voltage is output (between No.3 pin and No.4 pin). Check that the rpm command voltage is output (between No.2 pin and No.4 pin). S1 7 Motor supply voltage 6 Vacant pin 5 Vacant pin 4 P.
SiBE04-624 Check 3.13 Rotating Pulse Input on Outdoor Unit PCB Check Check No.23 < For propeller fan motor or humidification fan> Make sure voltage of 270 ± 30 V is applied. 1. Set power ON and operation OFF. Remove connector S70 or S72. 2. Check that the voltage between No. 4 pin and No.7 pin is 270 VDC. 3. Check that the control voltage between No. 3 pin and No. 4 pin is 15 VDC. 4. Check that the RPM command voltage between No. 2 pin and No. 4 pin is 5 VDC. 5. Set power OFF and operation OFF.
Check SiBE04-624 3.14 Humidity Sensor Check Check No.27 1. Check for proper connection. 2. Check sensor input level (*1). 3. Change ambient conditions (*2) and check that input level changes accordingly. *1 Input level varies depending on the sensor. *2 Changes in humidity, temperature, air flow rate. To do this, merely breathe upon. 12V 5V S48 1 2 Buzzer 3 4 Humidity sensor 5 C70 6 Room temperature thermistor GND (R6023) 3.15 Main Circuit Short Check Check No.
SiBE04-624 Check 3.16 Four-way Valve Performance Check Check No.31 < Caution on resetting the power supply > ∗ Be sure to wait for 30 sec. or more after turning off the power supply. Turn off the power and turn it on again. S80 voltage at DC 0 V with outdoor unit on? NO Replace the outdoor unit PCB. YES ∗ Four way valve coil Cooling / dry : No continuity Heating : Continuity Start the heating-mode run. S80 voltage at DC 130-230 V for 3 sec.
Check SiBE04-624 3.17 Solenoid Valve for Dehumidification Check Check No.32 Faulty criterion: In dehumidification test operation mode, PCB is identified as a faulty when the solenoid valve does not turn on within 2 sec. after compressor start-up. (When reheating dehumidifying is not used, the operation mode is similar to cooling operation.) Stop operation The voltage of S43 is 0 V? YES Run dehumidification test operation NO Replace the indoor control PCB (A1P) Wait 2 sec. after the compressor on.
SiBE04-624 Part 7 Removal Procedure 1. Indoor Unit...........................................................................................216 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 1.10 1.11 1.12 1.13 1.14 1.15 Removal of the Air Filters / Front panel................................................216 Removal of the Upper Panel ................................................................222 Removal of the Front Grille ..................................................................
Indoor Unit SiBE04-624 1. Indoor Unit 1.1 Removal of the Air Filters / Front panel Procedure Step 1. External appearance Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Procedure Points Multi monitor lamp changes its color according to the operation mode. Remote controller is interactive communication type. 2. Remove the air filter 1 Hold the front panel on both sides and lift it up.
SiBE04-624 Step Indoor Unit Procedure 2 Keep the front panel open with the support plate. 3 Push the center part of the air filter up to undo the 2 hooks. 4 Remove the air filter toward yourself. 5 The shapes of the right and left filters are different. Points Insert the filters along with the guide for easy installation.
Indoor Unit Step 3. Remove the deodorizing filter for streamer 1 Pull the center knob to undo the hook. 2 Pull out the deodorizing filter for streamer toward yourself. 3 Undo the 3 hooks on the longitudinal direction. 4 218 SiBE04-624 Procedure Points In cleaning, keep the filter with the frame for prevention of breakage. Slide the filter toward yourself to remove.
SiBE04-624 Step 4. Remove the streamer unit 1 Pull down the streamer unit with holding the knob. Indoor Unit Procedure Points 5. Remove the titanium apatite photocatalytic air purifying filter 1 Undo the projection of the frame of titanium apatite photocatalytic air purifying filter and remove it. Insert the filters along with the guide for easy installation. 2 Undo the 4 hooks, open the frame, and remove the titanium apatite photocatalytic air purifying filter.
Indoor Unit Step SiBE04-624 Procedure 6. Remove the air supply filter 1 Lift the air supply filter up to take out. Points Insert the filters along with the guide for easy installation. Install the air supply filter correctly so that the “Front” mark comes front. Humidifying operation without installing the air supply filter will form condensation inside the panel and it causes water leakage. 2 Undo the lower 2 hooks of the air supply filter and open the frame.
SiBE04-624 Step Indoor Unit Procedure 2 Push the panel stoppers outward on both right and left sides to detach the rotary shafts from the holes. 3 Slide the rotary shaft on the left to the right and pull it out toward yourself. 4 Slide the rotary shaft on the right to the left and pull it out toward yourself. 5 Remove the front panel.
Indoor Unit 1.2 Removal of the Upper Panel Procedure Step 1. Remove the service cover 1 Loosen the 1 screw (black) of the service cover. 2 Slide the service cover downward to undo the hook on the back side (see the figure below). 3 When assembling, catch the 2 hooks on the far side first, and close the cover. 222 SiBE04-624 Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Procedure Points There is no field setting switch.
SiBE04-624 Step 2. Remove the upper panel 1 Undo the 3 hooks of the upper panel. 2 In part A, pinch the upper hook, undo the hook, and lift it up. 3 In part B, undo the hook as in part A, and lift it up.
Indoor Unit Step Procedure 4 In part C, lift the right and left sides to bend the upper panel and slightly pull toward yourself to remove. 5 Pull the upper panel toward yourself to remove. 224 SiBE04-624 Points When assembling, make sure to catch the far side hooks.
SiBE04-624 1.3 Indoor Unit Removal of the Front Grille Procedure Warning Step 1. Remove the front grille 1 Loosen the 3 screws and undo the upper 3 hooks of the front grille. Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Procedure Points If the hooks are hard to be undone, use a flat screwdriver. You can check the position by the projection when it is hard to see. 2 Undo the center, right and left hooks.
Indoor Unit Step 4 SiBE04-624 Procedure Points Slide the front grille toward yourself to remove. 2. How to install the front grille 1 When assembling the front grille, fit the 4 lower hooks and push in until a click is heard. Points on installing When assembling, make sure that the horizontal blade (large) does not come inside. When assembling, follow the same steps for removal in reverse. 3. Features of the gear case 1 There is a gear assembly for front panel driving.
SiBE04-624 Step Indoor Unit Procedure 2 Check that the arm in the gear case of the front grille is in the stored position. 3 Installation structure of the gear case. 4 Movement of the arm. Removal Procedure Points The gear case is fixed to the front grille. When assembling the front grille, make sure the arm is stored.
Indoor Unit 1.4 SiBE04-624 Removal of the Assembly of the Open/Close Mechanism Procedure Step 1. Remove the open/close mechanism (right) 1 Loosen the 1 screw of the open/close mechanism (right). Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Procedure Points Preparation Remove the front grille according to "Removal of the Front Grille". When assembling, catch the lower hook first.
SiBE04-624 Step 2. Remove the open/close mechanism (left) 1 Pull out the shaft from the open/close mechanism (left). 2 3 Loosen the 2 screws of the open/close mechanism (left). Indoor Unit Procedure Points Service part is obtained as an assembly kit. Remove the open/ close mechanism (left).
Indoor Unit 1.5 Removal of the Assembly of the Reduction Motor Procedure Step 1. Remove the assembly of the reduction motor 1 Disconnect the connector for reduction motor [S51]. 2 SiBE04-624 Loosen the 1 screw of the assembly of the reduction motor. Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Procedure Points The figure above shows the hook on the connector for the assembly of reduction motor.
SiBE04-624 Step Indoor Unit Procedure 2 Cut the clamp. 3 Slide the cover to the right to undo the hook. 4 Lift the cover of the gear case of the reduction motor up slightly to undo the upper hook, and remove it.
Indoor Unit Step Procedure 5 Pull the gear out to remove. Loosen the 1 screw of the reduction motor. 6 Turn the assembly over and detach the sealing tape of the reduction motor. 7 Undo the 2 hooks of the limit switch. 232 SiBE04-624 Points The connector of the reduction motor can be disconnected.
SiBE04-624 1.6 Indoor Unit Removal of the Electrical Box Procedure Step 1. Disconnect the wire harnesses around the electrical box 1 Open the cover of the electrical box. 2 Remove the connection wire fixing plate and disconnect the connection wire. 3 The figure shows the arrangement of wiring of wire harnesses (front) and names of parts. Removal Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work.
Indoor Unit Step Procedure 4 The figure shows the arrangement of wiring of wire harnesses (under) and names of parts. 5 Disconnect the connector for dehumidifying solenoid valve [S43]. 6 Disconnect the connector for streamer unit [S52].
SiBE04-624 Step Indoor Unit Procedure 7 Disconnect the connector for swing motor [S41]. 8 Disconnect the connector for fan motor [S1], and undo the 1 hook. Removal Procedure Points The connector [S41] is for both horizontal blades and vertical blades.
Indoor Unit Step SiBE04-624 Procedure 9 Loosen the 1 screw of the drip proof cover. 10 Loosen the each screw of the 2 earth wires. 11 Disconnect the heat exchanger thermistor. Points Be careful not to lose the clip for thermistor. Positions of the thermistors are different according to the models. 2. Remove the electrical box 1 Loosen the 1 screw of the electrical box.
SiBE04-624 Step Indoor Unit Procedure 2 Close the cover and slide to undo the hook in the key hole. 3 Push up the bottom side of the electrical box, or push the bottom frame to the back. 4 Undo the upper hook first. 5 The shapes of the hook on back side. Removal Procedure Points When assembling, insert the upper hook, push slightly, and make sure to catch the lower hook.
Indoor Unit 1.7 Removal of the PCB Procedure Step 1. Remove the shelter 1 External appearance of the electrical box. 2 Undo the hook of the shelter. 3 While opening the shelter, undo the lower hook and lift the shelter up to undo the upper hook on the back. 4 Slide the shelter upward while lifting up (without hooked) and undo the 2 sockets. 238 SiBE04-624 Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work.
SiBE04-624 Step 2. Remove the power supply terminal board 1 Loosen the 1 screw and pull out the terminal board sideward. 2 Disconnect the red terminal with pliers and black and white terminals with a flat screwdrivers on the terminal board. 3. Remove the control PCB 1 Cut the 3 clamps. 2 Indoor Unit Procedure Points Black...... (1) Power supply White ..... (2) Power supply Red ........ (3) Signal Clamps should be used all the time. Fix it as it was before. Undo the earth wire from the hook.
Indoor Unit Step Procedure 3 Disconnect the connectors [S46] and [S48]. 4 Push out the connector for reduction motor mechanism while pinching the connector from the back side of the electrical box cover. 5 Loosen the 2 screws and remove the control PCB.
SiBE04-624 Step 6 Indoor Unit Procedure Points Names of parts of the control PCB. [S1]: Fan motor [S21]: HA [S32]: Heat exchanger thermistor [S41]: Swing motor [S43]: Solenoid valve [S46]: to Display PCB [S48]: to Sensor PCB [S51]: Open/close mechanism [S52]: Streamer unit 4. Remove the sensor PCB 1 Undo the 1 hook and pull out the sensor PCB. 5. Remove the receiver PCB 1 The arrangement of the wire harnesses. 2 Detach the fixing tape and disconnect the connector.
Indoor Unit Step 3 SiBE04-624 Procedure Undo the upper hook. Points Using a flat screwdriver makes it easy to undo the hook. 4 242 Undo the lower hook.
SiBE04-624 Step 5 Indoor Unit Procedure Undo the 3 hooks of the receiver PCB. Removal Procedure Points The receiver PCB and the display PCB are united.
Indoor Unit 1.8 Removal of the Dehumidifying Solenoid Valve Coil Procedure Step Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Procedure 1 Detach the lead wire from the drip proof cover. 2 Disconnect the connector for dehumidifying solenoid valve [S43]. 3 Pull the dehumidifying solenoid valve coil to remove. 244 SiBE04-624 Points Preparation Remove the front grille according to "Removal of the Front Grille".
SiBE04-624 1.9 Indoor Unit Removal of the Connecting Duct Procedure Warning Step 1. Remove the connecting duct for humidifying hose 1 Detach the humidifying hose from the duct unit. Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Procedure Points Preparation Remove the front grille according to "Removal of the Front Grille". Since inside of the connecting duct has projection hooks, shake the hose up and down to remove.
Indoor Unit Step Procedure 4 Slide the duct unit upward to remove. 5 When assembling, make sure to insert into the fixing hole.
SiBE04-624 Indoor Unit 1.10 Removal of the Drain Hose Procedure Step 1. Remove the drain hose 1 Loosen the screws of the main unit and installation plate. Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Procedure Points Cover the drain hose with plastic bags or the like so as the remaining drain will not wet the floor. Part A is fixed by the screw from back side.
Indoor Unit Step Procedure 2 Insert the drain hose removed in the previous step. 3 Insert the detached drain plug with an Allen wrench (4mm). 248 SiBE04-624 Points Make sure to check the drain hose is inserted firmly. Caution Do not push the drain plug with a sharp device like a screwdriver. (The drain plug can be damaged and that causes leakage of water.
SiBE04-624 Indoor Unit 1.11 Removal of the Swing Motor Procedure Step 1. Remove the swing motor 1 There are 3 hooks for the lead wire for swing motor. 2 Cut the clamp with nippers. 3 Undo the lead wire for swing motor from the hooks. 4 Loosen the 1 screw of the swing motor for the horizontal blades (large). Loosen the 2 screws of the swing motor for the horizontal blades (small). 2. Remove the swing motor for vertical blades 1 Loosen the 1 screw of the drain hose.
Indoor Unit Step 3 SiBE04-624 Procedure Points Undo the upper hook of the cover with a flat screwdriver. The hook on the back of the assembly of swing motor. 4 Undo the hook of connecting shaft for vertical blades. 5 Remove the assembly of swing motor. 6 Loosen the 2 screws of the swing motor for vertical blades. 250 When assembling the swing motor for vertical blades, remove the drain hose.
SiBE04-624 Indoor Unit 1.12 Removal of the Heat Exchanger Procedure Step 1. Remove the refrigerant piping 1 Put a wooden block under the indoor unit and pull out the refrigerant piping, drain hose, connection wirings, and so on. 2 3 Disconnect the flare nut of the connection of gas pipe with 2 spanners. Disconnect the flare nut of the connection of liquid pipe with 2 spanners. Caution From the point of view of environmental protection, be sure to use a vacuum pump for air purging.
Indoor Unit Step 2. Remove the indoor unit 1 Remove the indoor unit from the installation plate. 3. Remove the heat exchanger 1 Unfasten the hook of the pipe fixing plate at the back of the unit and pull out the pipe. 2 252 SiBE04-624 Procedure Points When the pipes are disconnected, protect the both openings of pipe side and unit side from entering of moisture. Undo the 2 hooks on the side with a flat screwdriver. Widen the auxiliary pipe by about 10-20 degrees.
SiBE04-624 Step Indoor Unit Procedure 3 Loosen the 2 fixing screws for heat exchanger on the left. 4 Lift the left side of the heat exchanger, and pull towards yourself. 5 Undo the hook through the gap of pipes. 6 Slide to right to undo the hook and lift the heat exchanger up. Removal Procedure Points Caution When dismounting or mounting the heat exchanger, be sure to wear gloves or wrap it with cloth before proceeding to the work. (You may be injured by the fins.
Indoor Unit SiBE04-624 1.13 Removal of the Propeller Fan / Fan Motor Procedure Step 1. Remove the right side panel 1 Loosen the 2 screws of the right side panel. 2 Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Procedure Points Preparation Remove the heat exchanger according to "Removal of the Heat Exchanger". Undo the far side hook of the right side panel while inclining toward yourself and remove. 2.
SiBE04-624 Step 3 Indoor Unit Procedure Remove the fan motor and fan rotor. Points The fan motor fixture (lower) can be removed by pushing the hook. 3. Remove the fan motor 1 Loosen the fixing screw for fan rotor and fan motor. 2 Remove the fan motor and fan rotor. 4. Remove the bearing 1 Remove the fan rotor. 2 Undo the 1 hook of the bearing.
Indoor Unit Step 3 SiBE04-624 Procedure Points The bearing is made of rubber. Push it inward firmly and remove it. 5. How to install the fan motor 1 When assembling, align the mark on the shaft.
SiBE04-624 Indoor Unit 1.14 Removal of Horizontal Blades / Vertical Blades Procedure Step 1. Remove the horizontal blade 1 Open the horizontal blade (large). 2 Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Procedure Points Undo the center fixture for the horizontal blade (large). When installing the horizontal blades, be careful not to put the large and small blades in the wrong position.
Indoor Unit Step 2. Remove the interlocking shaft 1 Undo the hook of the interlocking shaft. 2 SiBE04-624 Procedure Points Remove the interlocking shaft. 3. Remove the vertical blades 1 Undo the 3 hooks of the vertical blades with a flat screwdriver. 2 258 Remove the vertical blades.
SiBE04-624 Indoor Unit 1.15 Removal of the Streamer Unit Procedure Step 1. Remove the streamer unit 1 Names of parts of the streamer unit. 2 Open the cover of the electrical box, disconnect the connector for streamer unit [S52], and loosen the 1 screw. 3 Release the wire harness for solenoid valve coil from drip proof cover. 4 Slide the streamer unit to the right. 5 Remove it toward yourself.
Indoor Unit Step 6 SiBE04-624 Procedure Points Cut the clamp and loosen the 1 screw of the drip proof cover. 2. Remove the cover of streamer unit 1 Loosen the 2 screws of the cover. View from the back side (7 hooks) 2 260 Turn it back and undo the 7 hooks.
SiBE04-624 Step 3. Remove the deodorizing filter and electrode unit 1 Remove the deodorizing filter and electrode unit. 2 3 Slide the cover of the electrode unit to the left to remove. Indoor Unit Procedure Points See page 218 for removal of the deodorizing filter. When assembling, slide to the right. Electrode for discharging.
Indoor Unit Step 4. Remove the streamer unit PCB 1 Loosen the 1 screw of the electrode plate with a precise screwdriver. 2 SiBE04-624 Procedure Points Undo the 2 hooks of the streamer unit PCB. 5. Disconnect the limit switch 1 Disconnect the limit switch.
SiBE04-624 Outdoor Unit 2. Outdoor Unit 2.1 Removal of the Humidify Unit Procedure Step 1. External appearance 2. Remove the stop valve cover 1 Loosen the 1 screw of the stop valve cover and slide the cover downward to remove. Removal Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Procedure Points There is no drain unit.
Outdoor Unit Step 3. Remove the top panel 1 Loosen the 4 screws. 4. Remove the humidify unit 1 The figure shows the arrangement of the relay harness. 2 264 SiBE04-624 Procedure Points Be sure to wait 10 minutes or more after turning off the power supply before disconnecting the connectors. Disconnect the 5 relay connectors.
SiBE04-624 Step 3 Outdoor Unit Procedure Disconnect the connector for the humidify fan motor. Points Be sure to wait 10 minutes or more after turning off the power supply before disconnecting the connectors. Pull out the connector while pushing up the hook on the bottom side. 4 Loosen the 4 screws of humidify unit and lift it up to remove. 5 The figure shows the positions of the duct in humidifier and the relay connectors.
Outdoor Unit 2.2 SiBE04-624 Removal of the Heater Assembly / Humidifying Rotor (Moisture Absorption Element) / Humidifying Rotor Motor Procedure Step 1. Inside structure of humidifying unit Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Procedure Points Preparation Remove the top panel according to "Removal of Humidify Unit". 2. Remove the heater assembly 1 Loosen the 4 screws of the connecting duct on absorption side.
SiBE04-624 Step Outdoor Unit Procedure Points 3 Loosen the 2 screws to remove the heater assembly. 4 Undo the 1 hook. 5 Inside of the heater assembly. Heater and thermal fuse Loosen the 4 screws of the thermal protector. The thermal protector is 6 Removal Procedure should be replaced as the heater assembly. removable. Remove it before the lead wire.
Outdoor Unit Step 7 SiBE04-624 Procedure Points Inside structure of the heater assembly. 3. Remove the humidifying rotor. 1 Detach the lead wire for fan motor from the groove. 2 268 Remove the bell mouth on absorption side.
SiBE04-624 Step 3 Outdoor Unit Procedure Lift the humidifying rotor up to remove. Points A heat catalyst (black) is applied on the upper side. 4. Remove the humidifying rotor motor 1 The figure shows the connector for rotor motor. 2 Loosen the 2 screws of the rotor motor.
Outdoor Unit 2.3 Removal of the Humidifying Assembly Procedure Step 1. Remove the humidifying fan assembly 1 Detach the 2 seal materials. 2 Loosen the 5 screws of the humidifying fan assembly. 3 Undo the 2 hooks on the right. 270 SiBE04-624 Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Procedure Points Preparation Remove the humidify unit according to "Removal of Humidify Unit". Undo the hooks while bending the right side panel.
SiBE04-624 Step Outdoor Unit Procedure 4 Remove the humidifying assembly. 5 Detach the seal material to release the humidifying thermistor. Points The humidifying assembly should be replaced as an assembly set. (Disassembling of the assembly can cause a noise.) Inside structure of the upper part of the humidifying assembly. 2. Remove the air supply and exhaust changeover damper 1 Loosen the 3 screws of the air supply and exhaust changeover damper.
Outdoor Unit Step Procedure 2 Lift the air supply and exhaust changeover damper to remove. 3 Loosen the 1 screw of the driving motor for damper.
SiBE04-624 2.4 Removal of the Moisture Absorption Fan Motor Procedure Step 1. Remove the moisture absorption fan 1 Disconnect the connector for fan motor and remove the bell mouth on absorption side. 2 Loosen the fan fixing nut (M10) of the moisture absorption fan and remove. 2. Remove the moisture absorption fan motor 1 Loosen the 3 screws of the fan motor fixing plate. 2 Outdoor Unit Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work.
Outdoor Unit 2.5 SiBE04-624 Removal of the Propeller Fan / Fan Motor Procedure Step 1. Remove the shelter 1 Loosen the 1 screw of the shelter. Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Procedure Points Preparation Remove the humidify unit according to "Removal of Humidify Unit". Be careful not to forget to install, not to lose, and not to break the shelter and electrical box cover.
SiBE04-624 Step 2 Outdoor Unit Procedure Points Lift the electrical box (cover) and remove. 3. Remove the drip proof cover 1 Lift the drip proof cover and remove. Service monitor (LED A). Check the LED from the slit. 4. Remove the front panel 1 Loosen the 9 screws of the front panel. There are 5 hooks in total of right and left.
Outdoor Unit Step 2 SiBE04-624 Procedure Points Loosen the 4 screws to remove the front grille. 5. Remove the propeller fan 1 Loosen the fan fixing nut and remove the propeller fan. When assembling, align the mark of the propeller fan and D cut of the motor shaft. When assembling the fan motor, let the z mark go upper. (The direction of the lead wire outlet.) Loosen the fan fixing nut with the 13mm spanner.
SiBE04-624 Step 6. Remove the fan motor 1 Disconnect the fan motor connector [S70] from PCB. 2 Detach the lead wire for fan motor and pass the lead wire downward through the opening. 3 Loosen the 1 screw of the fan motor fixing plate.
Outdoor Unit Step SiBE04-624 Procedure 4 Detach the upper part of the fan motor fixing plate. 5 Fan motor fixing plate has the 2 hooks on lower part. 6 Undo the fixing hook for lead wire and detach the lead wire. 7 Loosen the 4 screws of the fan motor. 8 Pull out the rubber vibration isolators sideward. Points Heat exchanger fin Lead wire Propeller fan (R3249) When assembling, put the lead wire through the back of the motor.
SiBE04-624 2.6 Removal of the Duct in Humidifier Procedure Step 1. Remove the duct in humidifier 1 Loosen the 1 screw and remove the stop valve cover. 2 Outdoor Unit Loosen the 1 screw of the duct in humidifier. Removal Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Procedure Points When assembling, make sure to catch the hook.
Outdoor Unit 2.7 Removal of the Electrical Box Procedure Step 1. Disconnect the wire harnesses of the PCB 1 Detach the harnesses for humidify unit from the hook. 2 Disconnect the connector for fan motor [S70] from the PCB. 3 Disconnect the connector for humidifying fan motor [S72]. 4 Disconnect the connector for four way valve coil [S80]. 280 SiBE04-624 Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work.
SiBE04-624 Step Outdoor Unit Procedure 5 Disconnect the connector for expansion valve coil [S20]. 6 Disconnect the connector for thermistor assembly [S90]. 7 Disconnect the connector for humidifying thermistor [S91]. 8 Disconnect the Faston terminal from the reactor. Removal Procedure Points Thermistor assembly is in a set of 3 thermistors.
Outdoor Unit Step 9 SiBE04-624 Procedure Points Disconnect the relay harness for compressor. 2. Disconnect the power supply / connecting wiring 1 Loosen the 1 screw of connecting wire terminal board. Thermal fuse should be replaced with the terminal board. You can work without removing the terminal board. 2 282 Disconnect the connecting wires.
SiBE04-624 Step 4 Disconnect the connectors black (power supply), white (power supply), and red (signal) and detach the earth wire. 5 Undo the clip for the thermistor assembly fixed to the electrical box. 6 Loosen the each 1 screw in front and on the right of the electrical box. 7 Lift the electrical box to remove. Removal Procedure Outdoor Unit Procedure Points Black-power supply White-power supply Red-signal Green/Yellow-earth The clip is push-mount type.
Outdoor Unit 2.8 Removal of the PCB Procedure Step 1 SiBE04-624 Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Procedure Loosen the 7 screws for the PCB or the radiation fin. Points Preparation Remove the electrical box according to "Removal of Electrical Box". The control PCB is in up side down. PbF (Pb free brazing) is adopted. When replacing, use a exclusive solder and soldering iron. 2 Remove the PCB and the radiation fin.
SiBE04-624 Step Outdoor Unit Procedure 3 Loosen the 2 screws and 1 clip to remove the heat interception plate. 4 Cut the fixing clamps for the wire harnesses. 5 Loosen the 2 fixing screws of the PCB. 6 Raise the PCB toward yourself and undo the 3 hooks of the electrical box.
Outdoor Unit Step Procedure 7 Remove the PCB from the electrical box. 8 Disconnect the each wire harness. 9 286 SiBE04-624 Points S20 : Expansion valve S21 : Humidifying rotor motor S22 : Damper motor S501: LS S70 : Fan motor S72 : Humidifying fan motor S80 : Four way valve S90 : Thermistor (outdoor air / heat exchanger / discharge pipe) S91 : Humidifying thermistor Names of parts of PCB.
SiBE04-624 2.9 Outdoor Unit Removal of the Sound Blanket Procedure Warning Step 1. Remove the right side panel 1 Loosen the 3 screws on the back side of the right side panel. 2 Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Procedure Points Preparation Remove the electrical box according to "Removal of Electrical Box". Loosen the 2 screws on the right and slide the panel to undo the 2 lower hooks. 2.
Outdoor Unit Step Procedure 2 Undo the fixing strings of the sound blanket (outer body). 3 Open the sound blanket (outer body) and pull it out. 4 Open the sound blanket (inner body) and pull it out. 5 Pull the sound blanket (bottom) out. 288 SiBE04-624 Points Since the piping ports on the sound blanket are torn easily, remove the blanket carefully.
SiBE04-624 Outdoor Unit 2.10 Remove the Thermistor Assembly Procedure Step Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Procedure 1 The figure shows the arrangement of the thermistors. 2 Loosen the 3 screws on the back side of the right side panel and detach the outdoor air thermistor. 3 Loosen the 2 screws on the right and slide the panel to undo the 2 lower hooks.
Outdoor Unit Step 4 SiBE04-624 Procedure Points Detach the heat exchanger thermistor. Be careful not to loose the clip for the thermistor. 5 6 Lift the sound blanket (top) to remove. Since the piping ports on Detach the discharge pipe thermistor. Detach the discharge pipe the sound blanket are torn easily, remove the blanket carefully. thermistor while opening the thermistor fixing clip. Be careful not to loose the fixing clip for the discharge pipe thermistor.
SiBE04-624 Outdoor Unit 2.11 Removal of the Reactor / Partition Plate Procedure Step 1. Remove the reactor 1 Loosen the 1 screw and lift the reactor to remove. Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Procedure Points Preparation Remove the sound blanket according to "Removal of Sound Blanket". The reactor can be removed by loosening only 1 screw. 2. Remove the partition plate 2 Loosen the 2 screws and lift the plate to remove.
Outdoor Unit SiBE04-624 2.12 Removal of the Four Way Valve Procedure Step 1. Remove the peripheral parts 1 Loosen the 1 screw of the four way valve coil. 2 Remove the expansion valve coil. 3 Remove the putty. 292 Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Procedure Points Preparation Remove the sound blanket according to "Removal of Sound Blanket".
SiBE04-624 Step Provide a protective sheet or a steel plate so that the brazing flame cannot influence peripheries. Before working, make sure that the refrigerant is empty in the circuit. Be sure to apply nitrogen replacement when heating up the brazed part. 2. Remove the four way valve 1 Heat up the 4 brazed parts of the four way valve. Remove it in the order of , , , . 2 Heat up the brazed part and pull out the piping side with pliers. Warning Ventilate when refrigerant leaks during the work.
Outdoor Unit SiBE04-624 2.13 Removal of the Expansion Valve Procedure Step 1. Remove the peripheral parts • Four way valve coil • Expansion valve coil • Putty and so on so as not to be damaged by the brazing flame. 1 Remove the four any valve coil. 2 Remove the expansion valve coil. Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Procedure Points Preparation Remove the sound blanket according to "Removal of Sound Blanket".
SiBE04-624 Outdoor Unit 2.14 Removal of the Compressor Procedure Step 1. Remove the peripheral parts 1 Remove the terminal cover. 2 Detach the lead wire for compressor. Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Procedure Points Preparation Remove the sound blanket according to "Removal of Sound Blanket". Be careful so as not to burn the compressor terminals or the name plate. Make a note.
Outdoor Unit Step Provide a protective sheet or a steel plate so that the brazing flame cannot influence peripheries. Before working, make sure that the refrigerant is empty in the circuit. Be sure to apply nitrogen replacement when heating up the brazed part. 2. Remove the compressor 1 Disconnect the brazing part of the compressor on the discharge side. 2 Heat up and disconnect the brazing part on the suction side. 3 Lift up and remove the compressor.
SiBE04-624 Part 8 Others 1. Others .................................................................................................298 1.1 Test Run from the Remote Controller ..................................................298 1.2 Field Setting .........................................................................................
Others SiBE04-624 1. Others 1.1 Test Run from the Remote Controller For Heat pump In cooling mode, select the lowest programmable temperature; in heating mode, select the highest programmable temperature. Trial operation may be disabled in either mode depending on the room temperature. After trial operation is complete, set the temperature to a normal level.
SiBE04-624 1.2 Others Field Setting 1.2.1 Humidifying Hose Length Setting the humidifying hose length. z Set the humidifying hose length to ensure humidifying capacity. Use the remote controller to set the humidifying hose length. When doing this, power on the unit as communication is established between the unit and the remote controller. (The humidifying hose length includes the rear of the indoor unit.
Others SiBE04-624 1.2.2 How to set the different addresses When 2 indoor units are installed in one room, the 2 wireless remote controllers can be set for different addresses. 1) Remove the front grille. (3 screws) 2) Cut the address jumper “JA”. (See Fig. 1) Fig. 1 Electric parts box cover Cut JA. 3) Remove the remote controller lid and cut the address jumper “J4”. (See Fig. 2) Fig. 2 Cut section J4 (R5989) 1.2.
SiBE04-624 Part 9 Appendix 1. Piping Diagrams..................................................................................302 1.1 Indoor Units ..........................................................................................302 1.2 Outdoor Units .......................................................................................302 2. Wiring Diagrams..................................................................................303 2.1 Indoor Units ......................................
Piping Diagrams SiBE04-624 1. Piping Diagrams 1.1 Indoor Units FTXR28/42/50EV1B INDOOR UNIT 6.4CuT THERMISTOR ON HEAT EXCH. SV SV HEAT EXCHANGER SOLENOID VALVE AT RATED VOLTAGE:CLOSED (UNDER DEHUMIDIFICATION OPERATION) CROSS FLOW FAN M HEAT EXCHANGER FAN MOTOR FIELD PIPING (6.4CuT) SINGLE UNION JOINT 9.5CuT FIELD PIPING (9.5CuT) SINGLE UNION JOINT REFRIGERANT FLOW COOLING HEATING 4D054058 1.2 Outdoor Units RXR28/42/50EV1B OUTDOOR UNIT HEAT EXCHANGER OUTDOOR TEMPERATURE THERMISTOR 6.
SiBE04-624 Wiring Diagrams 2. Wiring Diagrams 2.1 Indoor Units FTXR28/42/50EV1B : PRINTED CIRCUIT BOARD : FLAME GROUND : FUSE : MULTI MONITOR : PILOT LAMP : LIMIT SWITCH FOR PANEL : LIMIT SWITCH FOR STREAMER : FAN MOTOR : SWING MOTOR : THERMISTOR : VARISTOR : CONNECTOR : OPERATION SWITCH : TERMINAL STRIP : SOLENOID VALVE : FERRITE CORE : PROTECTIVE EARTH CAUTION NOTE THAT OPERATION WILL RESTART AUTOMATICALLY IF THE MAIN POWER SUPPLY IS TURNED OFF AND THEN BACK ON AGAIN.
Wiring Diagrams 304 SiBE04-624 Removal Procedure
Specifications, designs and other content appearing in this brochure are current as of August 2006 but subject to change without notice.
