SiBE05-722_C Service Manual Inverter Pair Floor / Ceiling Suspended Dual Type BA-Series [Applied Models] O Inverter Pair : Cooling Only O Inverter Pair : Heat Pump
SiBE05-722_C Inverter Pair Floor / Ceiling Suspended Dual Type BA-Series zCooling Only Indoor Unit FLKS25BAVMB FLKS35BAVMB Outdoor Unit RKS25E2V1B RKS35E2V1B RKS25G2V1B RKS35G2V1B RKS25G2V1B9 RKS35G2V1B9 zHeat Pump Indoor Unit FLXS25BAVMB FLXS35BAVMB Outdoor Unit RXS25E2V1B RXS35E2V1B RXS25G2V1B RXS35G2V1B RXS25G2V1B9 RXS35G2V1B9 RXS25J2V1B RXS35J2V1B RXS25K3V1B RXS35K2V1B The removal procedure for each model is separately bound. Refer to page 123 for the booklet number of applicable model.
SiBE05-722_C 1. Introduction .............................................................................................v 1.1 Safety Cautions ........................................................................................v 1.2 Used Icons .............................................................................................. ix Part 1 List of Functions ................................................................ 1 1. Functions...........................................................
SiBE05-722_C 3.12 Malfunctions ...........................................................................................50 Part 5 Remote Controller ............................................................ 51 1. FLK(X)S25/35BAVMB...........................................................................52 Part 6 Service Diagnosis............................................................. 54 1. Troubleshooting with LED .....................................................................55 1.
SiBE05-722_C Part 7 Trial Operation and Field Settings................................. 108 1. 2. 3. 4. Pump Down Operation........................................................................109 Forced Cooling Operation ...................................................................110 Trial Operation ....................................................................................111 Field Settings ......................................................................................112 4.
Introduction SiBE05-722_C 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.
SiBE05-722_C Introduction Warning Be sure to wear a safety helmet, gloves, and a safety belt when working at a high place (more than 2 m). Insufficient safety measures may cause a fall accident. In case of R-410A refrigerant models, be sure to use pipes, flare nuts and tools for the exclusive use of the R-410A refrigerant. The use of materials for R-22 refrigerant models may cause a serious accident such as a damage of refrigerant cycle as well as an equipment failure.
Introduction SiBE05-722_C 1.1.2 Cautions Regarding Safety of Users Warning Be sure to use parts listed in the service parts list of the applicable model and appropriate tools to conduct repair work. Never attempt to modify the equipment. The use of inappropriate parts or tools may cause an electrical shock, excessive heat generation or fire. If the power cable and lead wires have scratches or deteriorated, be sure to replace them.
SiBE05-722_C Introduction Warning Check to make sure that the power cable plug is not dirty or loose, then insert the plug into a power outlet securely. If the plug has dust or loose connection, it may cause an electrical shock or fire. Be sure to install the product correctly by using the provided standard For unitary type installation frame. only Incorrect use of the installation frame and improper installation may cause the equipment to fall, resulting in injury.
Introduction SiBE05-722_C Caution Be sure to measure the insulation resistance after the repair, and make sure that the resistance is 1 MΩ or higher. Faulty insulation may cause an electrical shock. Be sure to check the drainage of the indoor unit after the repair. Faulty drainage may cause the water to enter the room and wet the furniture and floor. Do not tilt the unit when removing it. The water inside the unit may spill and wet the furniture and floor.
SiBE05-722_C Part 1 List of Functions 1. Functions.................................................................................................
Functions SiBE05-722_C Operation limit for cooling (°CDB) Operation limit for heating (°CWB) Compressor Comfortable Airflow Comfort Control Operation Lifestyle Convenience z — Air-purifying filter z z Photocatalytic deodorizing filter z z Air-purifying filter with photocatalytic deodorizing function — — Category Health & Clean –15 ~ 18 Functions PAM control z z Standby electricity saving — — Titanium apatite photocatalytic air-purifying filter — — Oval scroll compressor — —
Operation limit for cooling (°CDB) Operation limit for heating (°CWB) Compressor Comfortable Airflow Operation Lifestyle Convenience z — Air-purifying filter z z Photocatalytic deodorizing filter z z Air-purifying filter with photocatalytic deodorizing function — — — — Category Health & Clean –15 ~ 18 Functions PAM control z z Standby electricity saving — — Titanium apatite photocatalytic air-purifying filter Oval scroll compressor — — Air filter (prefilter) z z Swing comp
Inverter (with inverter power control) Operation limit for cooling (°CDB) Operation limit for heating (°CWB) Compressor Comfortable Airflow Operation Lifestyle Convenience — Health & Clean Air-purifying filter z z Photocatalytic deodorizing filter z z –15 ~ 18 Air-purifying filter with photocatalytic deodorizing function — — — — Functions z z Standby electricity saving — — Titanium apatite photocatalytic air-purifying filter Oval scroll compressor — — Air filter (prefilter) z
Compressor Comfortable Airflow Comfort Control Operation Lifestyle Convenience z z Operation limit for cooling (°CDB) –10 –10 ~ 46 ~ 46 Operation limit for heating (°CWB) –15 –15 ~ 18 ~ 18 FLXS25/35BAVMB RXS25K3V1B, RXS35K2V1B Inverter (with inverter power control) FLXS25/35BAVMB RXS25/35J2V1B Basic Function Functions FLXS25/35BAVMB RXS25K3V1B, RXS35K2V1B Category Functions FLXS25/35BAVMB RXS25/35J2V1B SiBE05-722_C Air-purifying filter z z Photocatalytic deodorizing filter z z Air
SiBE05-722_C Part 2 Specifications 1. Specifications ..........................................................................................7 1.1 Cooling Only.............................................................................................7 1.2 Heat Pump .............................................................................................
SiBE05-722_C Specifications 1. Specifications 1.1 Cooling Only 50 Hz, 220 - 230 - 240 V Model Indoor Unit Outdoor Unit Capacity Rated (Min. ~ Max.) Moisture Removal Running Current (Rated) Power Consumption Rated (Min. ~ Max.) Power Factor COP Rated (Min. ~ Max.) Liquid Piping Gas Connections Drain Heat Insulation Max. Interunit Piping Length Max.
Specifications SiBE05-722_C 50 Hz, 220 - 230 - 240 V Model Indoor Unit Outdoor Unit Capacity Rated (Min. ~ Max.) Moisture Removal Running Current (Rated) Power Consumption Rated (Min. ~ Max.) Power Factor COP Rated (Min. ~ Max.) Liquid Piping Gas Connections Drain Heat Insulation Max. Interunit Piping Length Max.
SiBE05-722_C Specifications 50 Hz, 220 - 230 - 240 V Model Indoor Unit Outdoor Unit Capacity Rated (Min. ~ Max.) Moisture Removal Running Current (Rated) Power Consumption Rated (Min. ~ Max.) Power Factor COP Rated (Min. ~ Max.) Liquid Piping Gas Connections Drain Heat Insulation Max. Interunit Piping Length Max.
Specifications 1.2 SiBE05-722_C Heat Pump 50 Hz, 220 - 230 - 240 V Indoor Unit Model FLXS25BAVMB RXS25E2V1B Outdoor Unit Capacity Rated (Min. ~ Max.) Moisture Removal Running Current (Rated) Power Consumption Rated (Min. ~ Max.) Power Factor COP Rated (Min. ~ Max.) Liquid Piping Gas Connections Drain Heat Insulation Max. Interunit Piping Length Max.
SiBE05-722_C Specifications 50 Hz, 220 - 230 - 240 V Indoor Unit Model FLXS25BAVMB RXS25G2V1B Outdoor Unit 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.
Specifications SiBE05-722_C 50 Hz, 220 - 230 - 240 V Indoor Unit Model FLXS25BAVMB RXS25G2V1B9 Outdoor Unit 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.
SiBE05-722_C Specifications 50 Hz, 220 - 230 - 240 V Indoor Unit Model FLXS25BAVMB RXS25J2V1B Outdoor Unit 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.
Specifications SiBE05-722_C 50 Hz, 220 - 230 - 240 V Indoor Unit Model FLXS25BAVMB RXS25K3V1B Outdoor Unit 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.
SiBE05-722_C Part 3 Printed Circuit Board Connector Wiring Diagram 1. Indoor Unit.............................................................................................16 2. Outdoor Unit..........................................................................................18 2.1 RK(X)S25/35E2V1B ...............................................................................18 2.2 RK(X)S25/35G2V1B...............................................................................20 2.
Indoor Unit SiBE05-722_C 1. Indoor Unit Control PCB 1) 2) 3) 4) 5) 6) 7) 8) S6 S7 S21 S24 S26 S32 S37 JA 9) JB JC 10) SW2 11) LED A Connector for swing motor (horizontal swing) Connector for AC fan motor Connector for centralized control (HA) Connector for display PCB Connector for signal receiver PCB Connector for indoor heat exchanger thermistor Connector for power supply PCB Address setting jumper ∗ Refer to page 112 for detail.
SiBE05-722_C Power Supply PCB Indoor Unit 1) 2) 3) 4) 5) S36 H1, H2, H3 H4, H5, H6 V1 FU1 Connector for control PCB Connector for terminal board Connector for AC fan motor Varistor Fuse (3.
Outdoor Unit SiBE05-722_C 2. Outdoor Unit 2.
SiBE05-722_C Outdoor Unit Filter PCB 1) 2) 3) 4) S11 HL1, HN1, S E HC1, HC2 HL2, HN2 5) HR1 6) FU3 7) V2, V3 Connector for main PCB Connector for terminal board Terminal for earth wire Connector for main PCB Connector for reactor Fuse (20 A, 250 V) Varistor HC2 HR1 E HL1 HN1 S HN2 S11 HC1 HL2 V3 V2 FU3 3P143310-1 Printed Circuit Board Connector Wiring Diagram 19
Outdoor Unit 2.
SiBE05-722_C Outdoor Unit Filter PCB 1) 2) 3) 4) 5) 6) 7) 8) S11 HL1, HN1, S E1 E2 HL2, HN2 HR1 FU3 V2, V3 Connector for main PCB Connector for terminal board Terminal for earth wire Connector for terminal board (earth) Connector for main PCB Connector for reactor Fuse (20 A, 250 V) Varistor E1 E2 HR1 HL1 HN1 S V3 V2 HN2 FU3 S11 HL2 to S50 (on main PCB) Printed Circuit Board Connector Wiring Diagram 3P203203-1 21
Outdoor Unit 2.
SiBE05-722_C Outdoor Unit Filter PCB 1) 2) 3) 4) 5) 6) 7) 8) S11 AC1, AC2, S E1, E2 HL2, HN2 HR1 FU1 FU3 V2, V3 Connector for main PCB Connector for terminal board Terminal for earth wire Connector for main PCB Connector for reactor Fuse (3.15 A, 250 V) Fuse (20 A, 250 V) Varistor HR1 E1, E2 HN2 V2 AC2 AC1 V3 S11 FU3 S FU1 HL2 S50 (on main PCB) Forced Operation Button PCB 1) S110 2) SW1 3P254234-1 Connector for main PCB Forced cooling operation ON/OFF button ∗ Refer to page 110 for detail.
SiBE05-722_C Part 4 Function and Control 1. Main Functions......................................................................................25 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 1.10 1.11 1.12 Temperature Control ..............................................................................25 Frequency Principle................................................................................25 Airflow Direction Control.........................................................................
SiBE05-722_C Main Functions 1. Main Functions 1.1 Temperature Control Definitions of Temperatures The definitions of temperatures are classified as following.
Main Functions Drawing of Inverter SiBE05-722_C The following drawing shows a schematic view of the inverter principle: Refrigerant circulation rate (high) AC power Amount of heat exchanged air (small) DC power high speed Amount of heat exchanged air (large) high f low f low speed 50 Hz freq= constant 60 Hz freq=variable Amount of heat exchanged air (large) Amount of heat exchanged air (small) capacity= variable Refrigerant circulation rate (low) Inverter Features (R2812) The inverter provid
SiBE05-722_C 1.3 Main Functions Airflow Direction Control Auto-Swing The following table explains the auto swing process for cooling, dry, fan, and heating: Up and Down Cooling / Dry / Fan 65˚ 20˚ 40˚ Ceiling Heating 95 ˚ (R2964) (R2963) 95 ˚ 40˚ 20˚ ˚ 65 Floor (R2967) 1.4 (R2966) Fan Speed Control for Indoor Unit Outline Phase control and fan speed control contains 9 steps: LLL, LL, SL, L, ML, M, MH, H, and HH.
Main Functions SiBE05-722_C In heating operation, the fan speed is regulated according to the indoor heat exchanger temperature and the difference between the room thermistor temperature and the target temperature. Note: 1.5 1. During POWERFUL operation, the fan rotates at H tap + 50 rpm. 2. The fan stops during defrost control. Program Dry Operation Outline Program dry operation removes humidity while preventing the room temperature from lowering.
SiBE05-722_C 1.6 Main Functions Automatic Operation Outline Detail Automatic Cooling / Heating Function When the automatic operation is selected with the remote controller, the microcomputer automatically determines the operation mode as cooling or heating according to the room temperature and the set temperature at start-up. The unit automatically switches the operation mode to maintain the room temperature at the set temperature.
Main Functions 1.7 SiBE05-722_C Thermostat Control Outline Thermostat control is based on the difference between the room thermistor temperature and the target temperature. Detail Thermostat OFF Condition The temperature difference is in the zone A. Thermostat ON Condition The temperature difference returns to the zone C after being in the zone A. The system resumes from defrost control in any zones except A. The operation turns on in any zones except A.
SiBE05-722_C 1.8 Main Functions NIGHT SET Mode Outline When the OFF TIMER is set, the NIGHT SET Mode is automatically activated. The NIGHT SET Mode keeps the airflow rate setting. Detail The NIGHT SET Mode continues operation at the target temperature for the first one hour, then automatically raises the target temperature slightly in the case of cooling, or lowers it slightly in the case of heating.
Main Functions 1.9 SiBE05-722_C HOME LEAVE Operation Outline HOME LEAVE operation is a function that allows you to record your favorite set temperature and airflow rate. You can start your favorite operation mode simply by pressing the [HOME LEAVE] button on the remote controller. Detail Start of Function The function starts when the [HOME LEAVE] button is pressed in cooling operation, heating operation (including POWERFUL operation), or while the operation is stopped.
SiBE05-722_C Main Functions How to Set the Temperature and Airflow Rate When using HOME LEAVE operation for the first time, set the temperature and airflow rate for HOME LEAVE operation. Record your preferred temperature and airflow rate. Initial setting Cooling temperature 25°C Heating 25°C Selectable range Airflow rate temperature 18 - 32°C Airflow rate 5 step, , 10 - 30°C 5 step, , 1. Press [HOME LEAVE] button. Make sure [ ] is displayed in the remote controller display. 2.
Main Functions SiBE05-722_C 1.11 Clock Setting ARC433 Series The clock can be set by taking the following steps: 1. Press the [CLOCK] button. → is displayed and blinks. 2. Press the [TIMER] or button to set the clock to the present time. Holding down the [TIMER] or button increases or decreases the time display rapidly. 3. Press the [CLOCK] button again. → blinks and clock setting is completed.
SiBE05-722_C Main Functions 1.12 Other Functions 1.12.1 Hot-Start Function In order to prevent the cold air blast that normally comes when heating operation is started, the temperature of the indoor heat exchanger is detected, and the airflow is either stopped or made very weak thereby carrying out comfortable heating of the room. *The cold air blast is also prevented using similar control when the defrost control starts or when the thermostat is turned ON. 1.12.
Function of Thermistor SiBE05-722_C 2. Function of Thermistor Electronic expansion valve (1) (3) Four way valve (2) Compressor (R14247) (1) Outdoor Heat Exchanger Thermistor 1. The outdoor heat exchanger thermistor is used for controlling the target discharge pipe temperature.
SiBE05-722_C Control Specification 3. Control Specification 3.1 Mode Hierarchy Outline Air conditioner control has normal operation mode, forced operation mode, and power transistor test mode for installation and servicing.
Control Specification 3.2 Outline SiBE05-722_C Frequency Control Frequency is determined according to the difference between the room thermistor temperature and the target temperature. The function is explained as follows. 1. How to determine frequency 2. Frequency command from the indoor unit (Difference between the room thermistor temperature and the target temperature) 3. Frequency initial setting 4.
SiBE05-722_C Control Specification 2. Determine upper limit frequency The minimum value is set as an upper limit frequency among the frequency upper limits of the following functions: Compressor protection, input current, discharge pipe temperature, heating peak-cut, freezeup protection, defrost. 3.
Control Specification 3.3 SiBE05-722_C Controls at Mode Changing / Start-up 3.3.1 Preheating Control Outline The inverter operation in open phase starts with the conditions of the preheating command from the indoor unit, the outdoor temperature, and the discharge pipe temperature. Detail RK(X)S25/35E2V1B, RK(X)S25/35G2V1B ON Condition When the discharge pipe temperature is below 10°C, the inverter operation in open phase starts.
SiBE05-722_C Control Specification 3.3.3 Four Way Valve Operation Compensation Outline At the beginning of the operation as the four way valve is switched, the pressure difference to activate the four way valve is acquired by having output frequency which is more than a certain fixed frequency, for a certain fixed time. Detail Starting Conditions 1. When the compressor starts and the four way valve switches from OFF to ON 2. When the four way valve switches from ON to OFF during operation 3.
Control Specification 3.4 Outline SiBE05-722_C Discharge Pipe Temperature Control The discharge pipe temperature is used as the internal temperature of the compressor. If the discharge pipe temperature rises above a certain level, the upper limit of frequency is set to keep the discharge pipe temperature from rising further.
SiBE05-722_C 3.5 Control Specification Input Current Control Outline The microcomputer calculates the input current while the compressor is running, and sets the frequency upper limit from the input current. In case of heat pump models, this control which is the upper limit control of the frequency takes priority over the lower limit of control of four way valve operation compensation.
Control Specification 3.6 SiBE05-722_C Freeze-up Protection Control Outline During cooling operation, the signal sent from the indoor unit controls the operating frequency limitation and prevents freezing of the indoor heat exchanger. (The signal from the indoor unit is divided into zones.) Detail The operating frequency limitation is judged with the indoor heat exchanger temperature.
SiBE05-722_C 3.8 Control Specification Outdoor Fan Control 1. Fan ON control to cool down the electrical box The outdoor fan is turned ON when the electrical box temperature is high while the compressor is OFF. 2. Fan OFF control during defrosting The outdoor fan is turned OFF during defrosting. 3. Fan OFF delay when stopped The outdoor fan is turned OFF 60 seconds after the compressor stops. 4.
Control Specification SiBE05-722_C 3.10 Defrost Control Outline Defrosting is carried out by the cooling cycle (reverse cycle). The defrosting time or outdoor heat exchanger temperature must be more than a certain value to finish. Detail Conditions for Starting Defrost The starting conditions are determined with the outdoor temperature and the outdoor heat exchanger temperature. The system is in heating operation. The compressor operates for 6 minutes.
SiBE05-722_C Control Specification 3.11 Electronic Expansion Valve Control During target discharge pipe temperature control When the frequency changes under target discharge pipe temperature control When the disconnection of the discharge pipe thermistor is ascertained When the frequency changes under the control for disconnection of the discharge pipe thermistor Under defrost control The followings are the examples of electronic expansion valve control which function in each operation mode.
Control Specification SiBE05-722_C 3.11.1 Fully Closing with Power ON The electronic expansion valve is initialized when turning on the power. The opening position is set and the pressure equalization is developed. 3.11.2 Pressure Equalizing Control When the compressor is stopped, the pressure equalizing control is activated. The electronic expansion valve opens, and develops the pressure equalization. 3.11.
SiBE05-722_C Control Specification 3.11.7 Control for Disconnection of the Discharge Pipe Thermistor Outline The disconnection of the discharge pipe thermistor is detected by comparing the discharge pipe temperature with the condensation temperature. If the discharge pipe thermistor is disconnected, the electronic expansion valve opens according to the outdoor temperature and the operation frequency, operates for a specified time, and then stops.
Control Specification SiBE05-722_C 3.12 Malfunctions 3.12.1 Sensor Malfunction Detection Sensor malfunction may occur in the thermistor. Relating to Thermistor Malfunction 1. Outdoor heat exchanger thermistor 2. Discharge pipe thermistor 3. Radiation fin thermistor 4. Outdoor temperature thermistor 3.12.2 Detection of Overcurrent and Overload Outline An excessive output current is detected and the OL temperature is observed to protect the compressor.
SiBE05-722_C Part 5 Remote Controller 1. FLK(X)S25/35BAVMB...........................................................................
FLK(X)S25/35BAVMB SiBE05-722_C 1. FLK(X)S25/35BAVMB Display (LCD) Signal transmitter • Displays the current settings. (In this illustration, each section is shown with all its displays on for the purpose of explanation.) ON OFF Receiver • To use the remote controller, aim the transmitter at the indoor unit. If there is anything to block signals between the unit and the remote controller, such as a curtain, the unit will not operate. • The maximum distance for communication is approx. 7m.
SiBE05-722_C FLK(X)S25/35BAVMB Open the Front Cover MODE button • Selects the operation mode. (heat pump only) (heat pump only) FAN setting button QUIET button • Selects the airflow rate setting every time you press this button. • OUTDOOR UNIT QUIET operation • QUIET operation is not available in FAN and DRY operation • QUIET operation and POWERFUL operation cannot be used at the same time. Priority is given to the function you pressed last.
SiBE05-722_C Part 6 Service Diagnosis 1. Troubleshooting with LED .....................................................................55 1.1 Indoor Unit..............................................................................................55 1.2 Outdoor Unit ...........................................................................................55 2. Problem Symptoms and Measures .......................................................56 3. Service Check Function ................................
SiBE05-722_C Troubleshooting with LED 1. Troubleshooting with LED 1.1 Indoor Unit Operation Lamp The operation lamp blinks when any of the following errors is detected. 1. When a protection device of the indoor or outdoor unit is activated, or when the thermistor malfunctions. 2. When a signal transmission error occurs between the indoor and outdoor units. In either case, conduct the diagnostic procedure described in the following pages. ON OFF Operation lamp (green) (R2974) Service Monitor 1.
Problem Symptoms and Measures SiBE05-722_C 2. Problem Symptoms and Measures Symptom Check Item The unit does not operate. Check the power supply. Check the type of the indoor unit. Check the outdoor temperature. Diagnose with remote controller indication. Operation sometimes stops. Details of Measure Reference Page Check if the rated voltage is supplied. Check if the indoor unit type is compatible with the outdoor unit.
SiBE05-722_C Service Check Function 3. Service Check Function Check Method 1 1. When the timer cancel button is held down for 5 seconds, 00 is displayed on the temperature display screen. Timer cancel button < ARC433 Series > (R18206) 2. Press the timer cancel button repeatedly until a long beep sounds. The code indication changes in the sequence shown below. Note: Service Diagnosis No. Code No. Code No.
Service Check Function SiBE05-722_C Check Method 2 1. Press the center of the [TEMP] button and the [MODE] button at the same time to enter the diagnosis mode. (R4272) The left-side number blinks. (R14967) 2. Press the [TEMP] or beeps or the long beep. button and change the number until you hear the two consecutive (R4274) 3. Diagnose by the sound. beep : The left-side number does not correspond with the error code.
SiBE05-722_C Service Check Function 5. Press the [TEMP] or button and change the number until you hear the long beep. (R4277) 6. Diagnose by the sound. beep : The left-side number does not correspond with the error code. two consecutive beeps : The left-side number corresponds with the error code but the right-side number does not. long beep : Both the left-side and right-side numbers correspond with the error code. 7. Determine the error code.
Troubleshooting SiBE05-722_C 4. Troubleshooting 4.
SiBE05-722_C 4.2 Troubleshooting Indoor Unit PCB Abnormality A1 Error Code Method of Error Detection The system checks if the circuit works properly within the microcomputer of the indoor unit. Error Decision Conditions The system cannot set the internal settings.
Troubleshooting 4.3 SiBE05-722_C Freeze-up Protection Control or Heating Peak-cut Control Error Code A5 Method of Error Detection Freeze-up protection control Error Decision Conditions Freeze-up protection control During cooling operation, the freeze-up protection control (operation halt) is activated according to the temperature detected by the indoor heat exchanger thermistor.
SiBE05-722_C 4.4 Troubleshooting Fan Motor (AC Motor) or Related Abnormality Error Code A6 Method of Error Detection The rotation speed detected by the Hall IC during fan motor operation is used to determine abnormal fan motor operation. Error Decision Conditions The detected rotation speed does not reach the demanded rotation speed of the target tap, and is less than 50% of the maximum fan motor rotation speed.
Troubleshooting 4.5 SiBE05-722_C Thermistor or Related Abnormality (Indoor Unit) Error Code C4, C9 Method of Error Detection The temperatures detected by the thermistors determine thermistor errors. Error Decision Conditions The thermistor input is more than 4.96 V or less than 0.04 V during compressor operation. Supposed Causes Disconnection of connector Defective thermistor Defective indoor unit PCB Troubleshooting Caution Check No.01 Refer to P.
SiBE05-722_C 4.6 Troubleshooting Refrigerant Shortage Error Code Method of Error Detection U0 Refrigerant shortage detection I: Refrigerant shortage is detected by checking the input current value and the compressor running frequency. If the refrigerant is short, the input current is lower than the normal value. Refrigerant shortage detection II: Refrigerant shortage is detected by checking the discharge pipe temperature and the opening of the electronic expansion valve.
Troubleshooting SiBE05-722_C Troubleshooting Caution Check No.01 Refer to P.96 Be sure to turn off the power switch before connecting or disconnecting connectors, or parts may be damaged. Any thermistor disconnected? NO Check No.12 Refer to P.98 Stop valve closed? YES ∗ Discharge pipe thermistor ∗ Indoor or outdoor heat exchanger thermistor ∗ Room temperature thermistor ∗ Outdoor temperature thermistor YES Replace the thermistor(s) in position. Open the stop valve.
SiBE05-722_C 4.7 Troubleshooting Low-voltage Detection or Over-voltage Detection Error Code U2 Method of Error Detection Low-voltage detection: An abnormal voltage drop is detected by the DC voltage detection circuit. Over-voltage detection: An abnormal voltage rise is detected by the over-voltage detection circuit. Error Decision Conditions Low-voltage detection: The voltage detected by the DC voltage detection circuit is below 180 V.
Troubleshooting SiBE05-722_C Troubleshooting Caution Be sure to turn off the power switch before connecting or disconnecting connectors, or parts may be damaged. Is the power supply voltage as rated? NO Correct the power supply. YES Is the compressor harness loose or disconnected? YES Reconnect the compressor harness. NO Rotate the outdoor fan by hand. Does the outdoor fan rotate smoothly? NO Replace both the fan motor and the outdoor unit PCB.
SiBE05-722_C 4.8 Troubleshooting Signal Transmission Error (between Indoor Unit and Outdoor Unit) Error Code U4 Method of Error Detection The data received from the outdoor unit in signal transmission is checked whether it is normal. Error Decision Conditions The data sent from the outdoor unit cannot be received normally, or the content of the data is abnormal.
Troubleshooting SiBE05-722_C Troubleshooting Check No.11 Refer to P.97 Caution Be sure to turn off the power switch before connecting or disconnecting connectors, or parts may be damaged. Check the power supply voltage. Voltage as rated? NO Correct the power supply. YES Check the indoor unit - outdoor unit connection wires. Is there any wiring error? YES Correct the indoor unit outdoor unit connection wires. NO Check the voltage of the connection wires on the indoor terminal board between No.
SiBE05-722_C 4.9 Troubleshooting Unspecified Voltage (between Indoor Unit and Outdoor Unit) Error Code UA Method of Error Detection The supply power is detected for its requirements (different from pair type and multi type) by the indoor / outdoor transmission signal. Error Decision Conditions The pair type and multi type are interconnected.
Troubleshooting SiBE05-722_C 4.10 Outdoor Unit PCB Abnormality Error Code E1 Method of Error Detection The system checks if the microprocessor is working in order. The system checks if the zero-cross signal comes in properly. Error Decision Conditions The microprocessor program runs out of control. The zero-cross signal is not detected.
SiBE05-722_C Troubleshooting 4.11 OL Activation (Compressor Overload) Error Code E5 Method of Error Detection A compressor overload is detected through compressor OL. Error Decision Conditions If the error repeats, the system is shut down.
Troubleshooting SiBE05-722_C Troubleshooting Caution Check No.01 Refer to P.96 Check No.12 Refer to P.98 Be sure to turn off the power switch before connecting or disconnecting connectors, or parts may be damaged. Discharge pipe thermistor disconnected? NG ∗ Discharge pipe thermistor Replace the discharge pipe thermistor. OK Connectors are properly connected? Check No.14 Refer to P.99 Insert the thermistor in position. NO Check No. 01 Check the thermistors. Check No.13 Refer to P.
SiBE05-722_C Troubleshooting 4.12 Compressor Lock Error Code E6 Method of Error Detection A compressor lock is detected by checking the compressor running condition through the position detection circuit. Error Decision Conditions Operation stops due to overcurrent. If the error repeats, the system is shut down. Reset condition: Continuous run for about 11 minutes without any other error Supposed Causes Compressor locked Compressor harness disconnected Troubleshooting Caution Check No.
Troubleshooting SiBE05-722_C 4.13 DC Fan Lock Error Code E7 Method of Error Detection An error is determined with the high-voltage fan motor rotation speed detected by the Hall IC. Error Decision Conditions The fan does not start in about 15 ~ 60 seconds even when the fan motor is running. If the error repeats, the system is shut down.
SiBE05-722_C Troubleshooting 4.14 Input Overcurrent Detection Error Code E8 Method of Error Detection An input overcurrent is detected by checking the input current value with the compressor running. Error Decision Conditions The current exceeds about 9.25 A for 2.5 seconds with the compressor running. Supposed Causes (The upper limit of the current decreases when the outdoor temperature exceeds a certain level.) Outdoor temperature is out of operation range.
Troubleshooting SiBE05-722_C 4.15 Four Way Valve Abnormality Error Code EA Method of Error Detection The room temperature thermistor and the indoor heat exchanger thermistor are checked if they function within their normal ranges in each operation mode. Error Decision Conditions Cooling / Dry A following condition continues over 10 minutes after operating for 5 minutes. (room thermistor temp. – indoor heat exchanger temp.) < –5°C Heating (indoor heat exchanger temp. – room thermistor temp.
SiBE05-722_C Troubleshooting Troubleshooting Caution Check No.01 Refer to P.96 Be sure to turn off the power switch before connecting or disconnecting connectors, or parts may be damaged. Four way valve coil disconnected (loose)? YES Correct the four way valve coil. NO Check No.13 Refer to P.99 Harness out of connector? YES Reconnect the harness. NO Check No.14 Refer to P.99 Check the continuity of the four way valve coil and harness. Disconnect the harness from the connector.
Troubleshooting SiBE05-722_C 4.16 Discharge Pipe Temperature Control Error Code F3 Method of Error Detection An error is determined with the temperature detected by the discharge pipe thermistor. Error Decision Conditions If the temperature detected by the discharge pipe thermistor rises above A°C, the compressor stops. The error is cleared when the discharge pipe temperature has dropped below B°C.
SiBE05-722_C Troubleshooting 4.17 High Pressure Control in Cooling Error Code F6 Method of Error Detection High-pressure control (operation halt, frequency drop, etc.) is activated in cooling operation if the temperature sensed by the outdoor heat exchanger thermistor exceeds the limit. Error Decision Conditions The temperature sensed by the outdoor heat exchanger thermistor rises above about 65°C. The error is cleared when the temperature drops below about 50 ~ 55°C.
Troubleshooting SiBE05-722_C 4.18 Compressor System Sensor Abnormality Error Code H0 Method of Error Detection The system checks the DC current before the compressor starts. Error Decision Conditions The DC current before compressor start-up is out of the range 0.5 ~ 4.5 V (sensor output converted to voltage value) The DC voltage before compressor start-up is below 50 V.
SiBE05-722_C Troubleshooting 4.19 Position Sensor Abnormality Error Code H6 Method of Error Detection A compressor start-up failure is detected by checking the compressor running condition through the position detection circuit. Error Decision Conditions If the error repeats, the system is shut down.
Troubleshooting SiBE05-722_C Troubleshooting Check No.15 Refer to P.100 Check No.18 Refer to P.103 Check No.20 Refer to P.104 Caution Be sure to turn off the power switch before connecting or disconnecting connectors, or parts may be damaged. Turn off the power. Check the power supply voltage. Voltage as rated? NO Correct the power supply. YES Check No. 18 Check the discharge pressure. OK? NO Replace the stop valve. YES Check No. 20 Check the short circuit of the diode bridge.
SiBE05-722_C Troubleshooting 4.20 DC Voltage / Current Sensor Abnormality Error Code H8 Method of Error Detection DC voltage or DC current sensor abnormality is identified based on the compressor running frequency and the input current. Error Decision Conditions If the error repeats, the system is shut down.
Troubleshooting SiBE05-722_C 4.21 Thermistor or Related Abnormality (Outdoor Unit) Error Code H9, J3, J6, P4 Method of Error Detection This fault is identified based on the thermistor input voltage to the microcomputer. A thermistor fault is identified based on the temperature sensed by each thermistor. Error Decision Conditions The thermistor input voltage is above 4.96 V or below 0.04 V with the power on.
SiBE05-722_C Troubleshooting Troubleshooting In case of RK(X)S25/35E2V1B In case of “H9” “J3” “J6” for RK(X)S25/35G2V1B, RK(X)S25/35G2V1B9, RXS25/35J2V1B, RXS25K3V1B, RXS35K2V1B Check No.01 Refer to P.96 Caution Be sure to turn off the power switch before connecting or disconnecting connectors, or parts may be damaged. Turn on the power again. Error displayed again on remote controller? NO Reconnect the connectors or thermistors. YES Check No. 01 Check the thermistor resistance value.
Troubleshooting SiBE05-722_C 4.22 Electrical Box Temperature Rise Error Code L3 Method of Error Detection An electrical box temperature rise is detected by checking the radiation fin thermistor with the compressor off. Error Decision Conditions With the compressor off, the radiation fin temperature is above A°C. The error is cleared when the radiation fin temperature drops below B°C.
SiBE05-722_C Troubleshooting Check No.01 Refer to P.96 Troubleshooting RK(X)S25/35E2V1B Caution Be sure to turn off the power switch before connecting or disconnecting connectors, or parts may be damaged. WARNING Turn off the power and turn it on again. To cool the electrical components, the outdoor fan starts when the radiation fin temperature rises above C˚C and stops when it drops below B˚C. Check No.17 Refer to P.103 YES Error again or outdoor fan activated? Check No.19 Refer to P.
Troubleshooting Troubleshooting SiBE05-722_C RK(X)S25/35G2V1B, RK(X)S25/35G2V1B9, RXS25/35J2V1B, RXS25K3V1B, RXS35K2V1B Caution Check No.17 Refer to P.103 Check No.19 Refer to P.104 Be sure to turn off the power switch before connecting or disconnecting connectors, or parts may be damaged. WARNING To cool the electrical components, the outdoor fan starts when the radiation fin temperature rises above C ˚C and stops when it drops below B ˚C. Turn off the power and turn it on again.
SiBE05-722_C Troubleshooting 4.23 Radiation Fin Temperature Rise Error Code L4 Method of Error Detection A radiation fin temperature rise is detected by checking the radiation fin thermistor with the compressor on. Error Decision Conditions If the radiation fin temperature with the compressor on is above A°C. The error is cleared when the radiation fin temperature drops below B°C. If the error repeats, the system is shut down.
Troubleshooting Troubleshooting SiBE05-722_C RK(X)S25/35E2V1B Caution Check No.01 Refer to P.96 Be sure to turn off the power switch before connecting or disconnecting connectors, or parts may be damaged. Turn off the power and turn it on again to start the system. Check No.17 Refer to P.103 Error displayed again? Check No.19 Refer to P.104 YES Has the PCB been replaced? NO YES NO Check if the silicon grease applied properly on the radiation fin. If not, apply the silicon grease.
SiBE05-722_C Troubleshooting Troubleshooting RK(X)S25/35G2V1B, RK(X)S25/35G2V1B9, RXS25/35J2V1B, RXS25K3V1B, RXS35K2V1B Caution Check No.17 Refer to P.103 Be sure to turn off the power switch before connecting or disconnecting connectors, or parts may be damaged. Turn off the power and turn it on again to start the system. Check No.19 Refer to P.104 Error displayed again? YES Has the PCB been replaced? NO YES NO Check if silicon grease is applied properly on the radiation fin.
Troubleshooting SiBE05-722_C 4.24 Output Overcurrent Detection Error Code L5 Method of Error Detection An output overcurrent is detected by checking the current that flows in the inverter DC section. Error Decision Conditions A position signal error occurs while the compressor is running. A rotation speed error occurs while the compressor is running. An output overcurrent signal is fed from the output overcurrent detection circuit to the microcomputer.
SiBE05-722_C Troubleshooting Troubleshooting Caution Check No.15 Refer to P.100 Check No.17 Refer to P.103 Be sure to turn off the power switch before connecting or disconnecting connectors, or parts may be damaged. ∗ An output overcurrent may result from wrong internal wiring. If the system is interrupted by an output overcurrent after the wires have been disconnected and reconnected for part replacement, check the wiring again. Check No. 17 Check the installation condition.
Check SiBE05-722_C 5. Check 5.1 Thermistor Resistance Check Check No.01 Disconnect the connectors of the thermistors from the PCB, and measure the resistance of each thermistor using tester. The data is for reference purpose only. Thermistor temperature (°C) –20 Resistance (kΩ) 197.8 –15 –10 148.2 112.1 –5 0 85.60 65.93 5 10 51.14 39.99 15 20 31.52 25.02 25 30 20.00 16.10 35 40 13.04 10.62 45 50 8.707 7.
SiBE05-722_C 5.2 Check Hall IC Check Check No.04 1. Check the connector connection. 2. With the power on, operation off, and the connector connected, check the following. ∗Output voltage of about 5 V between pins 1 and 3. ∗Generation of 3 pulses between pins 2 and 3 when the fan motor is operating. If NG in step 1 Æ Defective PCB Æ Replace the PCB. If NG in step 2 Æ Defective Hall IC Æ Replace the fan motor. If OK in both steps 1 and 2 Æ Replace the PCB.
Check 5.4 SiBE05-722_C Electronic Expansion Valve Check Check No.12 Conduct the followings to check the electronic expansion valve (EV). 1. Check to see if the EV connector is correctly connected to the PCB. 2. Turn the power off and on again, and check to see if the EV generates a latching sound. 3. If the EV does not generate a latching sound in the above step 2, disconnect the connector and check the continuity using a tester. 4.
SiBE05-722_C 5.5 Check Four Way Valve Performance Check Check No.13 Turn the power off and then on again. Start heating operation. S80 voltage at 220 - 240 VAC with compressor on? (Fig. 1) ∗ Four way valve coil Cooling / Dry : No continuity Heating : Continuity NO Replace the outdoor unit PCB. YES Disconnect the four way valve coil from the connector and check the continuity. Four way valve coil resistance at 1000 ~ 2000 Ω? NO Replace the four way valve coil. YES Replace the four way valve.
Check 5.7 SiBE05-722_C Inverter Analyzer Check Check No.15 Characteristics Inverter analyzer: RSUK0917C If an abnormal stop occurs due to compressor startup failure or overcurrent output when using an inverter unit, it is difficult to judge whether the stop is caused by the compressor failure or some other failure (main PCB, power module, etc.). The inverter analyzer makes it possible to judge the cause of trouble easily and securely.
SiBE05-722_C Check Diagnose method (Diagnose according to 6 LEDs lighting status.) (1) If all the LEDs are lit uniformly, the compressor is defective. → Replace the compressor. (2) If the LEDs are not lit uniformly, check the power module. → Refer to Check No.22. (3) If NG in Check No.22, replace the power module. (Replace the main PCB. The power module is united with the main PCB.) If OK in Check No.22, check if there is any solder cracking on the PCB.
Check SiBE05-722_C RK(X)S25/35G2V1B9, RXS25/35J2V1B, RXS25K3V1B, RXS35K2V1B 1. Check that the voltage between the pins 10 - 11 is 15 VDC. 2. Check if the Hall IC generates the rotation pulse (0 ~ 15 VDC) 4 times between the pins 10 12, 10 - 13, when the fan motor is manually rotated once.
SiBE05-722_C 5.9 Check Installation Condition Check Check No.17 Installation condition check Check the allowable dimensions of the air suction and discharge area. NG Change the installation location or direction. OK Is the discharged air short-circuited? YES Change the installation location or direction. NO Is the outdoor heat exchanger very dirty? YES Clean the outdoor heat exchanger.
Check SiBE05-722_C 5.11 Outdoor Fan System Check Check No.19 DC motor Check the outdoor fan system. Fan motor lead wire connector disconnected? NO Outdoor fan running? YES YES Reconnect the connector. NO Go to Check No. 16. Outdoor fan system is functioning. (R15001) 5.12 Main Circuit Short Check Check No.20 Note: Check to make sure that the voltage between (+) and (–) of the diode bridge (DB1) is approx. 0 V before checking.
SiBE05-722_C Check RK(X)S25/35G2V1B 4 3 2 1 + ~ ~ – – + Tester (R12411) 2 3 4 – ~ ~ + 1 – + RK(X)S25/35G2V1B9, RXS25/35J2V1B, RXS25K3V1B, RXS35K2V1B Tester (R12035) Service Diagnosis 105
Check SiBE05-722_C 5.13 Power Module Check Check No.22 Note: Check to make sure that the voltage between (+) and (–) of the power module is approx. 0 V before checking. Disconnect the compressor harness connector from the outdoor unit PCB. To disengage the connector, press the protrusion on the connector. Follow the procedure below to measure resistance between the terminals of the power module and the terminals of the compressor with a multi-tester.
SiBE05-722_C Check RK(X)S25/35G2V1B Power module (R18360) RK(X)S25/35G2V1B9, RXS25/35J2V1B, RXS25K3V1B, RXS35K2V1B Power module (R16069) Service Diagnosis 107
SiBE05-722_C Part 7 Trial Operation and Field Settings 1. 2. 3. 4. Pump Down Operation........................................................................109 Forced Cooling Operation ...................................................................110 Trial Operation ....................................................................................111 Field Settings ......................................................................................112 4.1 When 2 Units are Installed in 1 Room...
SiBE05-722_C Pump Down Operation 1. Pump Down Operation Outline In order to protect the environment, be sure to conduct pump down operation when relocating or disposing the unit. Detail 1) Remove the valve caps from the liquid stop valve and the gas stop valve. 2) Carry out forced cooling operation. 3) After 5 to 10 minutes, close the liquid stop valve with a hexagonal wrench. 4) After 2 to 3 minutes, close the gas stop valve and stop the forced cooling operation.
Forced Cooling Operation SiBE05-722_C 2. Forced Cooling Operation Item Conditions Forced Cooling The forced cooling operation is allowed when both of the following conditions are met. 1) The outdoor unit is not abnormal and not in the 3-minute standby mode. 2) The outdoor unit is not operating. Start The forced cooling operation starts when any of the following conditions is fulfilled. Command frequency 1) Press the forced cooling operation ON/OFF button (SW1) on the indoor unit for 5 seconds.
SiBE05-722_C Trial Operation 3. Trial Operation Outline 1. Measure the supply voltage and make sure that it falls within the specified range. 2. Trial operation should be carried out in either cooling or heating operation. 3. Carry out the trial operation in accordance with the operation manual to ensure that all functions and parts, such as flap movement, are working properly. The air conditioner requires a small amount of power in standby mode.
Field Settings SiBE05-722_C 4. Field Settings 4.1 When 2 Units are Installed in 1 Room Outline When 2 indoor units are installed in 1 room, 1 of the 2 indoor units and the corresponding wireless remote controller can be set for different addresses. Both the indoor unit PCB and the wireless remote controller need alteration. Indoor Unit PCB Cut the address setting jumper JA on the control PCB.
SiBE05-722_C 4.2 Field Settings Facility Setting Jumper (cooling at low outdoor temperature) Outline This function is limited only for facilities (the target of air conditioning is equipment (such as computer)). Never use it in a residence or office (the space where there is a human). Detail You can expand the operation range to –15°C by cutting the jumper on the outdoor unit PCB. If the outdoor temperature falls to –20°C or lower, the operation stops.
Field Settings SiBE05-722_C RK(X)S25/35G2V1B9, RXS25/35J2V1B, RXS25K3V1B, RXS35K2V1B Main PCB J5 J4 J3 S40 S70 Cut the jumper J4. S90 S2 (R18253) 114 Caution 1. If the outdoor unit is installed where the outdoor heat exchanger of the unit is exposed to direct wind, provide a windbreak wall. 2. Intermittent noises may be produced by the indoor unit due to the outdoor fan turning on and off when using facility settings. 3.
SiBE05-722_C 4.3 Field Settings Jumper and Switch Settings Jumper Jumper JB (on indoor unit PCB) JC (on indoor unit PCB) Function When connected (factory set) Fan speed setting Fan speed setting; when compressor Remote controller stops for thermostat setting OFF. (effective only in cooling operation) Power failure Auto-restart recovery function J5 Improvement of (on outdoor unit PCB) defrost performance Caution Standard control When cut Fan speed setting; “0” (The fan stops.
Silicon Grease on Power Transistor / Diode Bridge SiBE05-722_C 5. Silicon Grease on Power Transistor / Diode Bridge Outline Apply the specified silicon grease to the heat radiation part of a power transistor / diode bridge when you replace an outdoor unit PCB. The silicon grease encourages the heat radiation of a power transistor / diode bridge. Detail 1. 2. 3. 4. Wipe off the old silicon grease completely. Apply the silicon grease evenly. See the illustrations below for examples of application.
SiBE05-722_C Part 8 Appendix 1. Piping Diagrams..................................................................................118 1.1 Indoor Unit............................................................................................118 1.2 Outdoor Unit .........................................................................................119 2. Wiring Diagrams..................................................................................121 2.1 Indoor Unit.....................................
Piping Diagrams SiBE05-722_C 1. Piping Diagrams 1.1 Indoor Unit FLKS25/35BAVMB FLXS25/35BAVMB INDOOR UNIT INDOOR UNIT (6.4CuT) (6. 4CuT) HEAT EXCHANGER HEAT EXCHANGER FIELD PIPING (6. 4CuT) SIROCCO FAN THERMISTOR ON HEAT EXCH. FIELD PIPING (6.4CuT) FAN MOTOR M FIELD PIPING (9.5CuT) (9. 5CuT) (9.5CuT) REFRIGERANT FLOW COOLING HEATING REFRIGERANT FLOW COOLING 4D034012E 118 THERMISTOR ON HEAT EXCH. FAN MOTOR M FIELD PIPING (9.
SiBE05-722_C 1.2 Piping Diagrams Outdoor Unit 1.2.1 Cooling Only RKS25/35E2V1B OUTDOOR UNIT OUTDOOR TEMPERATURE THERMISTOR 9.5CuT 7.0CuT HEAT EXCHANGER 7.0CuT 4.8CuT MUFFLER WITH FILTER M MOTOR OPERATED VALVE MUFFLER WITH FILTER 9.5CuT PROPELLER FAN φ. 4.0×ID. 2.0CuT HEAT EXCHANGER THERMISTOR 4.8CuT 6.4CuT 6.4CuT 9.5CuT FOUR WAY VALVE NORMALLY : OFF 9.5CuT 7.9CuT 6.4CuT MUFFLER WITH FILTER LIQUID STOP VALVE 7.9CuT MUFFLER DISCHARGE PIPE THERMISTOR 9.5CuT 9.
Piping Diagrams SiBE05-722_C 1.2.2 Heat Pump RXS25/35E2V1B OUTDOOR UNIT 9.5CuT 7.0CuT OUTDOOR TEMPERATURE THERMISTOR HEAT EXCHANGER 7.0CuT 4.8CuT MUFFLER WITH FILTER M MOTOR OPERATED VALVE MUFFLER WITH FILTER 9.5CuT PROPELLER FAN φ4.0×ID. 2.0CuT HEAT EXCHANGER THERMISTOR 4.8CuT 6.4CuT 6.4CuT 9.5CuT 7.9CuT FOUR WAY VALVE ON : HEATING 9.5CuT 6.4CuT MUFFLER WITH FILTER LIQUID STOP VALVE MUFFLER FIELD PIPING (6.4CuT) 7.9CuT DISCHARGE PIPE THERMISTOR 9.5CuT 9.
SiBE05-722_C Wiring Diagrams 2. Wiring Diagrams 2.1 Indoor Unit FLK(X)S25/35BAVMB PCB3 S25 PCB1 S24 PCB2 S36 S37 H1 LED LED LED Fu 3.15A H1P H2P H3P H2 PCB4 C70 S1W TRANSMISSION CIRCUIT HA SIGNAL RECEIVER BLK WHT RED GRN/ YLW S27 S26 S21 S31 S32 t° t° R1T R2T H4 S7 H5 H3 X1M 1 2 3 1 2 3 → outdoor FIELD WIRING. CAUTION H6 NOTE THAT OPERATION WILL RESTART AUTOMATICALLY IF THE MAIN POWER SUPPLY IS TURNED OFF AND THEN BACK ON AGAIN.
Wiring Diagrams SiBE05-722_C RK(X)S25/35G2V1B FIELD WIRING. HN1 WHT S MRM10 V2 GRN/YLW MR30 SA1 S11 YLW 9 PCB1 E2 MR30_A W V 2 S50 1 S20 1 S30 1 MRCW 6 2 S40 S70 1 2 3 4 S90 1 S80 3 1 1 6 3 7 1 BLK BLK U 1 BLK BLK 4 outdoor + FU2 C118 3.15A - PCB2 S10 MR30_B BRN BRN Z2C N=2 V1 + C6 ~ - FU1 9 3.15A WHT YLW ORG BLU BRN RED GRN E1 GRY WHT BLK BLK BLK BLK BLK BLK BLK BLK 1 - HL3 BLU L HL2 + C5 DB2 ~ + ~ - BLU V3 N HN3 HN2 NOTE 1.
SiBE05-722_C Removal Procedure (Booklet No.) 3. Removal Procedure (Booklet No.) Refer to the following booklets for removal procedure. Appendix ∗FLKS25/35BAVMB Refer to SiBE05-722_B. ∗FLXS25/35BAVMB Refer to Si051261_A. ∗RK(X)S25/35E2V1B, RK(X)S25/35G2V1B(9), RXS25/35J2V1B Refer to SiBE05-722_B. ∗RXS25K3V1B, RXS35K2V1B Refer to Si001273.
Revision History Month / Year Version Revised contents 01 / 2007 SiBE05-722 05 / 2010 SiBE05-722_A Model addition: RK(X)S25/35G2V1B, RK(X)S25/35G2V1B9 01 / 2011 SiBE05-722_B Model addition: RXS25/35J2V1B 12 / 2012 SiBE05-722_C Model addition: RXS25K3V1B, RXS35K2V1B First edition
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