Si04-306B Inverter Pair Wall Mounted Type B-Series [Applied Models] zInverter Pair : Cooling Only zInverter Pair : Heat Pump zNon-Inverter Pair : Cooling Only zNon-Inverter Pair : Heat Pump
Si04-306B Inverter Pair B-Series zCooling Only Indoor Unit FTKS50BVMA FTKS60BVMA FTKS71BVMA FTKD50BVM FTKD60BVM FTKD71BVM Outdoor Unit RKS50BVMA RKS60BVMA RKS71BVMA RKD50BVM RKD60BVM RKD71BVM zHeat Pump Indoor Unit FTXS50BVMA FTXS60BVMA FTXS71BVMA FTXD50BVMA FTXD60BVMA FTXD71BVMA Outdoor Unit RXS50BVMA RXS60BVMA RXS71BVMA RXD50BVMA RXD60BVMA RXD71BVMA Table of Contents FTKS50BVMB FTKS60BVMB FTKS71BVMB FTS50BVMB FTS60BVMB FTKD50BVMA FTKD60BVMA FTKD
Si04-306B 1. Introduction .............................................................................................v 1.1 Safety Cautions ........................................................................................v Part 1 List of Functions ................................................................ 1 1. List of Functions ......................................................................................2 1.1 R410A Series .............................................................
Si04-306B 3.13 3.14 3.15 3.16 Malfunctions ...........................................................................................63 Forced Operation Mode .........................................................................64 Additional Function.................................................................................64 Facility Setting Switch (cooling at low outdoor temperature)..................65 Part 5 System Configuration....................................................... 67 1.
Si04-306B Part 7 Removal Procedure ........................................................ 139 1. Indoor Unit...........................................................................................140 1.1 1.2 1.3 1.4 1.5 1.6 Removal of the Air Filter / Front Panel .................................................140 Removal of the Front Grille ..................................................................143 Removal of the Horizontal Blades / Vertical Blades .............................
Si04-306B Introduction 1. Introduction 1.1 Safety Cautions Cautions and Warnings Be sure to read the following safety cautions before conducting repair work. Warning” and “ Caution”. The “ The caution items are classified into “ 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 Si04-306B 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.
Si04-306B 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 Si04-306B 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.
Si04-306B Part 1 List of Functions 1. List of Functions ......................................................................................2 1.1 R410A Series ...........................................................................................2 1.2 R22 Series................................................................................................
List of Functions Si04-306B 1.
Operation Limit for Cooling (°CDB) Basic Function Compressor Comfortable Airflow Comfort Control Operation Lifestyle Convenience { { — –15 ~18 PAM Control { { Oval Scroll Compressor — — Swing Compressor { { Air Purifying Filter with Bacteriostatic, Virustatic Functions — — Photocatalytic Deodorizing Filter — — Air Purifying Filter with Photocatalytic Deodorizing Function { { Functions –10★ –10 ~46 ~46 Operation Limit for Heating (°CWB) FTXS50·60·71BVMB RXS50·60·71BVMB Inverte
Functions Inverter (with Inverter Power Control) Basic Function Compressor Comfortable Airflow Comfort Control Operation Lifestyle Convenience { Operation Limit for Cooling (°CDB) –10 ~46 Operation Limit for Heating (°CWB) –15 ~18 PAM Control Category { Oval Scroll Compressor — Swing Compressor { Health & Clean ATXS50CVMB ARXS50CVMB Category Si04-306B ATXS50CVMB ARXS50CVMB List of Functions Functions Air Purifying Filter with Bacteriostatic, Virustatic Functions — Photocatalytic
Basic Function Compressor Comfortable Airflow Comfort Control Operation Lifestyle Convenience — — Operation Limit for Cooling (°CDB) –10 ~46 –10 ~46 Operation Limit for Heating (°CWB) — –15 ~18 PAM Control — — Oval Scroll Compressor — — Swing Compressor { { Health & Clean FTYS50·60BVMB RYS50·60BVMB Inverter (with Inverter Power Control) Category FTS50·60BVMB RS50·60BVMB Functions FTYS50·60BVMB RYS50·60BVMB Category List of Functions FTS50·60BVMB RS50·60BVMB Si04-306B Air Pu
List of Functions { { Operation Limit for Cooling (°CDB) –5 ~46 –5 ~46 Operation Limit for Heating (°CWB) — –15 ~18 PAM Control { { Oval Scroll Compressor — — Swing Compressor { { Inverter (with Inverter Power Control) Basic Function Compressor Comfortable Airflow Comfort Control Operation Lifestyle Convenience Category Health & Clean FTXD50·60·71BVMA RXD50·60·71BVMA Functions FTKD50·60·71BVM(A) RKD50·60·71BVM(A) Category FTXD50·60·71BVMA RXD50·60·71BVMA R22 Series FTKD50·60·7
{ Operation Limit for Cooling (°CDB) –5 ~46 Basic Function Operation Limit for Heating (°CWB) — –15 ~18 PAM Control { { Compressor Comfortable Airflow Comfort Control Operation Lifestyle Convenience Oval Scroll Compressor — — Swing Compressor { { Health & Clean FTXD50·60·71BVMT RXD50·60·71BVMT { –5 ~46 Inverter (with Inverter Power Control) Category FTKD50·60·71BVMT RKD50·60·71BVMT Functions FTXD50·60·71BVMT RXD50·60·71BVMT Category List of Functions FTKD50·60·71BVMT RKD50·60
Functions Inverter (with Inverter Power Control) Basic Function Compressor Comfortable Airflow Comfort Control Operation Lifestyle Convenience Category { FTKD18·24·28BVMS RKD18·24·28BVMS Category Si04-306B FTKD18·24·28BVMS RKD18·24·28BVMS List of Functions Functions Air Purifying Filter with Bacteriostatic, Virustatic Functions — — Photocatalytic Deodorizing Filter — PAM Control { Air Purifying Filter with Photocatalytic Deodorizing Function { Oval Scroll Compressor — Swing Compres
Functions Inverter (with Inverter Power Control) Basic Function Compressor Comfortable Airflow Comfort Control Operation Lifestyle Convenience Category { Operation Limit for Cooling (°CDB) –5 ~46 Operation Limit for Heating (°CWB) –15 ~18 PAM Control { Oval Scroll Compressor — Health & Clean Functions FTXD50BV4 RXD50BV4 Category List of Functions FTXD50BV4 RXD50BV4 Si04-306B Air Purifying Filter with Bacteriostatic, Virustatic Functions — Photocatalytic Deodorizing Filter — Air P
Functions Inverter (with Inverter Power Control) Basic Function Compressor Comfortable Airflow Comfort Control Operation Lifestyle Convenience Category { Operation Limit for Cooling (°CDB) –5 ~46 Operation Limit for Heating (°CWB) –15 ~18 PAM Control { Oval Scroll Compressor — Swing Compressor { Health & Clean FTXD80CV4 RXD80CV4 Category Si04-306B FTXD80CV4 RXD80CV4 List of Functions Functions Air Purifying Filter with Bacteriostatic, Virustatic Functions — Photocatalytic Deodor
Si04-306B Part 2 Specifications 1. Specifications ........................................................................................12 1.1 1.2 1.3 1.4 Specifications Cooling Only - R410A Series .................................................................12 Cooling Only - R22 Series......................................................................15 Heat Pump - R410A Series ....................................................................19 Heat Pump - R22 Series ........................
Specifications Si04-306B 1. Specifications 1.1 Cooling Only - R410A Series 240V, 50Hz Model Indoor Units Outdoor Units Capacity Rated (Min.~Max.) Moisture Removal Running Current (Rated) Power Consumption Rated (Min.~Max.
Si04-306B Specifications 230V, 50Hz Model Indoor Units Outdoor Units Capacity Rated (Min.~Max.) Moisture Removal Running Current (Rated) Power Consumption Rated (Min.~Max.
Specifications Si04-306B 230V, 50Hz Model Indoor Units Outdoor Units Capacity Rated Moisture Removal Running Current (Rated) Power Consumption Rated Power Factor COP Liquid Piping Gas Connections Drain Heat Insulation Indoor Unit Front Panel Color m³/min (cfm) Air Flow Rate Type Motor Output Speed Air Direction Control Air Filter Running Current (Rated) Power Consumption (Rated) Power Factor Temperature Control Dimensions (H×W×D) Packaged Dimensions (H×W×D) Weight Gross Weight Operation H/L Sound Soun
Si04-306B 1.2 Specifications Cooling Only - R22 Series 220-230-240V, 50Hz / 220-230V, 60Hz Model Indoor Units Outdoor Units kW Btu/h kcal/h L/h A Capacity Rated (Min.~Max.) Moisture Removal Running Current (Rated) Power Consumption Rated (Min.~Max.
Specifications Si04-306B 220-230-240V, 50Hz / 220-230V, 60Hz Model Indoor Units Outdoor Units kW Btu/h kcal/h L/h A Capacity Rated (Min.~Max.) Moisture Removal Running Current (Rated) Power Consumption Rated (Min.~Max.
Si04-306B Specifications 220V, 60Hz Model Indoor Units Outdoor Units Cooling Capacity (Min.~Max.) Moisture Removal Running Current Power Consumption (Min.~Max.
Specifications Si04-306B 220V, 50Hz Model Indoor Units Outdoor Units Capacity Rated (Min.~Max.) Moisture Removal Running Current (Rated) Power Consumption Rated (Min.~Max.
Si04-306B 1.3 Specifications Heat Pump - R410A Series 240V, 50Hz Indoor Units Model FTXS50BVMA RXS50BVMA Outdoor Units Capacity Rated (Min.~Max.) Moisture Removal Running Current (Rated) Power Consumption Rated (Min.~Max.
Specifications Si04-306B 240V, 50Hz Indoor Units Model Capacity Rated (Min.~Max.) Moisture Removal Running Current (Rated) Power Consumption Rated (Min.~Max.
Si04-306B Specifications 230V, 50Hz Indoor Units Model FTXS50BVMB RXS50BVMB Outdoor Units Capacity Rated (Min.~Max.) Moisture Removal Running Current (Rated) Power Consumption Rated (Min.~Max.
Specifications Si04-306B 230V, 50Hz Indoor Units Model Capacity Rated (Min.~Max.) Moisture Removal Running Current (Rated) Power Consumption Rated (Min.~Max.
Si04-306B Specifications 230V, 50Hz Indoor Units Model ATXS50CVMB ARXS50CVMB Outdoor Units Capacity Rated (Min.~Max.) Moisture Removal Running Current (Rated) Power Consumption Rated (Min.~Max.
Specifications Si04-306B 230V, 50Hz Indoor Units Model Capacity Rated Moisture Removal Running Current (Rated) Power Consumption Rated Power Factor COP Liquid Piping Connections Gas Drain Heat Insulation Indoor Unit Front Panel Color Air Flow Rate m³/min (cfm) Type Motor Output Speed Air Direction Control Air Filter Running Current (Rated) Power Consumption (Rated) Power Factor Temperature Control Dimensions (H×W×D) Packaged Dimensions (H×W×D) Weight Gross Weight Operation H/L Sound Sound Power H Outdoor
Si04-306B 1.4 Specifications Heat Pump - R22 Series 220-230-240V, 50Hz / 220-230V, 60Hz Indoor Units Model FTXD50BVMA RXD50BVMA Outdoor Units Capacity Rated (Min.~Max.) Moisture Removal Running Current (Rated) Power Consumption Rated (Min.~Max.
Specifications Si04-306B 220-230-240V, 50Hz / 220-230V, 60Hz Indoor Units Model Capacity Rated (Min.~Max.) Moisture Removal Running Current (Rated) Power Consumption Rated (Min.~Max.
Si04-306B Specifications 220V, 60Hz Indoor Units Model FTXD50BVMT RXD50BVMT Outdoor Units Capacity (Min.~Max.) Moisture Removal Running Current Power Consumption (Min.~Max.
Specifications Si04-306B 220V, 60Hz Indoor Units Model Capacity (Min.~Max.) Moisture Removal Running Current Power Consumption (Min.~Max.
Si04-306B Specifications 240V, 50Hz Indoor Unit Model Capacity Rated (Min.~Max.) Moisture Removal Running Current (Rated) Power Consumption Rated (Min.~Max.
Specifications Si04-306B 240V, 50Hz Indoor Units Model Capacity Rated (Min.~Max.) Moisture Removal Running Current (Rated) Power Consumption Rated (Min.~Max.
Si04-306B Part 3 Printed Circuit Board Connector Wiring Diagram 1. Printed Circuit Board Connector Wiring Diagram..................................32 1.1 Indoor Unit..............................................................................................32 1.2 Outdoor Unit ...........................................................................................
Printed Circuit Board Connector Wiring Diagram Si04-306B 1. Printed Circuit Board Connector Wiring Diagram 1.
Si04-306B PCB Detail Printed Circuit Board Connector Wiring Diagram PCB(1): Control PCB (indoor unit) S1 V1 FU1 S21 S6 S8 S35 JA JB JC PCB(2): Signal Receiver PCB S32 S28 S26 (R2860) PCB(3): Buzzer PCB S27 SW1 S38 S29 (R2861) RTH1 PCB(4): Display PCB LED1 LED2 (R2862) PCB(5): Intelligent Eye sensor PCB LED3 S37 (R2863) S36 (R2864) Printed Circuit Board Connector Wiring Diagram 33
Printed Circuit Board Connector Wiring Diagram 1.
Si04-306B PCB Detail Printed Circuit Board Connector Wiring Diagram PCB(1): Control PCB (outdoor unit) E AC1 FU2(3.
Printed Circuit Board Connector Wiring Diagram Si04-306B MID S34 S72 FU201 (3.
Si04-306B Part 4 Function and Control 1. Main Functions......................................................................................38 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 1.10 Frequency Principle................................................................................38 Power-Airflow Dual Flaps, Wide Angle Louvers and Auto-Swing ..........40 Fan Speed Control for Indoor Units........................................................41 Programme Dry Function ..................................
Main Functions Si04-306B 1. Main Functions Note: 1.1 See the list of functions for the functions applicable to different models. Frequency Principle Main Control Parameters Additional Control Parameters Inverter Principle Drawing of Inverter The compressor is frequency-controlled during normal operation.
Si04-306B Inverter Features Main Functions The inverter provides the following features: The regulating capacity can be changed according to the changes in the outside temperature and cooling/heating load. Quick heating and quick cooling The compressor rotational speed is increased when starting the heating (or cooling). This enables a quick set temperature.
Main Functions 1.2 Si04-306B Power-Airflow Dual Flaps, Wide Angle Louvers and Auto-Swing Power-airflow Dual Flaps The large flaps send a large volume of air downwards to the floor. The flap provides an optimum control area in cooling, heating and dry mode. Heating Mode During heating mode, the large flap enables direct warm air straight downwards. The flap presses the warm air above the floor to reach the entire room. Cooling Mode During cooling mode, the flap retracts into the indoor unit.
Si04-306B 1.3 Main Functions Fan Speed Control for Indoor Units Control Mode The airflow rate can be automatically controlled depending on the difference between the set temperature and the room temperature. This is done through phase control and Hall IC control. For more information about Hall IC, refer to the troubleshooting for fan motor on page 103. Phase Steps Phase control and fan speed control contains 9 steps: LLL, LL, SL, L, ML, M, MH, H and HH.
Main Functions 1.4 Si04-306B Programme Dry Function Programme dry function removes humidity while preventing the room temperature from lowering. Since the microcomputer controls both the temperature and air flow volume, the temperature adjustment and fan adjustment buttons are inoperable in this mode. In Case of Inverter Units The microcomputer automatically sets the temperature and fan settings.
Si04-306B 1.5 Main Functions Automatic Operation Automatic Cooling / Heating Function (Heat Pump Only) 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 1.6 Si04-306B Night Set Mode When the OFF timer is set, the Night Set circuit automatically activates. The Night Set circuit maintains the airflow setting made by users. The Night Set Circuit The Night Set circuit continues heating or cooling the room at the set temperature for the first one hour, then automatically lowers the temperature setting slightly in the case of cooling, or raises it slightly in the case of heating, for economical operations.
Si04-306B 1.7 Main Functions Intelligent Eye This is the function that detects existence of humans in the room by a human motion sensor (Intelligent Eye) and reduces the capacity when there is no human in the room in order to save electricity. Processing 1. Detection method by Intelligent Eye sampling (20msec) Sensor output 1sec If the sensor detects the outputs 10 times/sec. or more, it judges humans exist.
Main Functions Si04-306B Since the set temperature is shifted by 2°C higher for 40 minutes, compressor speed becomes low and can realize energy saving operation. But as thermostat is prone to be off by the fact that the set temperature has been shifted, the thermostat-off action is prohibited in 40 minutes so as to prevent this phenomena.
Si04-306B 1.8 Main Functions Home Leave Operation Outline In order to respond to the customer's need for immediate heating and cooling of the room after returning home or for house care, a measure to switch the temperature and air volume from that for normal time over to outing time by one touch is provided. (This function responds also to the need for keeping up with weak cooling or heating.
Main Functions 1.9 Si04-306B Inverter Powerful Operation Outline In order to exploit the cooling and heating capacity to full extent, operate the air conditioner by increasing the indoor fan rotating speed and the compressor frequency. Details of the Control When Powerful button is pushed in each operation mode, the fan speed/setting temperature will be converted to the following states in a period of twenty minutes.
Si04-306B Main Functions 1.10 Other Functions 1.10.1 Hot Start Function Heat Pump Only In order to prevent the cold air blast that normally comes when heating is started, the temperature of the heat exchanger of the indoor unit is detected, and either the air flow is stopped or is made very weak thereby carrying out comfortable heating of the room. *The cold air blast is also prevented using a similar control when the defrosting operation is started or when the thermostat gets turned ON. 1.10.
Function of Main Structural Parts Si04-306B 2. Function of Main Structural Parts 2.1 Function of Thermistor 2.1.1 Heat Pump Model A Electrontic expansion valve C Four way valve B Compressor (R2827) A Outdoor Heat Exchanger Thermistor (DCB) 1. The outdoor heat exchanger thermistor is used for controlling target discharge temperature. Set a target discharge temperature depending on the outdoor and indoor heat exchanger temperature.
Si04-306B Function of Main Structural Parts 2.1.2 Cooling Only Model A Electrontic expansion valve C B Compressor (R2828) A Outdoor Heat Exchanger Thermistor (DCB) 1. The outdoor heat exchanger thermistor is used for controlling target discharge temperature. Set a target discharge temperature depending on the outdoor and indoor heat exchanger temperature. Control the electronic expansion valve opening so that the target discharge temperature can be obtained. 2.
Control Specification Si04-306B 3. Control Specification 3.1 Mode Hierarchy Outline There are two modes; the mode selected in user’s place (normal air conditioning mode) and forced operation mode for installation and providing service. Detail 1.
Si04-306B 3.2 Control Specification Frequency Control Outline Frequency will be determined according to the difference between room and set temperature. The function is explained as follows. 1. How to determine frequency. 2. Frequency command from an indoor unit. (The difference between a room temperature and the temperature set by the remote controller.) 3. Frequency command from an indoor unit. 4. Frequency initial setting. 5. PI control.
Control Specification Si04-306B 3. Determine lower limit frequency Set a maximum value as an lower limit frequency among the frequency lower limits of the following functions: Pressure difference upkeep. 4. Determine prohibited frequency There is a certain prohibited frequency such as a power supply frequency.
Si04-306B 3.3 Control Specification Controls at Mode Changing / Start-up 3.3.1 Preheating Operation Outline Operate the inverter in the open phase operation with the conditions including the preheating command (only for heat pump model) from the indoor, the outdoor air temperature and discharge pipe temperature. Detail Preheating ON Condition When outdoor air temperature is below 10.5ºC and discharge pipe temperature is below 10.5ºC, inverter in open phase operation starts.
Control Specification 3.4 Si04-306B Discharge Pipe Temperature Control Outline The discharge pipe temperature is used as the compressor's internal temperature. If the discharge pipe temperature rises above a certain level, the operating frequency upper limit is set to keep this temperature from going up further. Detail Divide the Zone A B A B C D C D 110 103 102 101 (R2836) Management within the Zones Zone Stop zone Drooping zone Unchanged zone Return / Reset zone 3.
Si04-306B 3.6 Control Specification Freeze-up Protection Control Outline During cooling operation, the signals being sent from the indoor unit allow the operating frequency limitation and then prevent freezing of the indoor heat exchanger. (The signal from the indoor unit must be divided into the zones as the followings. Detail Conditions for Start Controlling Judge the controlling start with the indoor heat exchanger temperature after 2 sec from operation start. Control in Each Zone 3.
Control Specification 3.8 Si04-306B Fan Control Outline Fan control is carried out according to the following priority. 1. Fan ON control for electric component cooling fan 2. Fan control when defrosting 3. Fan OFF delay when stopped 4. ON/OFF control in cooling operation 5. Tap control when drooping function is working 6. Fan control in forced operation 7. Fan control in indoor/outdoor unit silent operation 8. Fan control in powerful mode 9.
Si04-306B Control Specification 3.10 Low Hz High Pressure Limit Outline Heat Pump Only Set the upper limit of high pressure in a low Hz zone. Set the upper limit of the indoor heat exchanger temperature by its operating frequency of Hz. Separate into three zones, reset zone, unchanged zone and drooping zone and the frequency control must be carried out in such zones. Detail Separate into Zones Note: Drooping: The system stops 2 minutes after staying in the drooping zone. 3.
Control Specification Si04-306B 3.12 Electronic Expansion Valve Control Detail The followings are the examples of control which function in each mode by the electronic expansion valve control. Operation pattern Control for abnormally high discharge pipe temperature The following items are included in the electronic expansion valve control. Electronic expansion valve is fully closed 1. Electronic expansion valve is fully closed when turning on the power. 2. Pressure equalizing control Open Control 1.
Si04-306B Control Specification 3.12.1 Fully Closing with Power ON Initialize the electronic expansion valve when turning on the power, set the opening position and develop pressure equalizing. 3.12.2 Pressure Equalization Control When the compressor is stopped, open and close the electronic expansion valve and develop pressure equalization. 3.12.3 Opening Limit Outline Limit a maximum and minimum opening of the electronic expansion valve.
Control Specification Si04-306B 3.12.7 Control when frequency is changed When the target discharge pipe temperature control is active, if the target frequency is changed for a specified value in a certain time period, cancel the target discharge pipe temperature control and change the target opening of the electronic expansion valve according to the shift. 3.12.
Si04-306B Control Specification 3.13 Malfunctions 3.13.1 Sensor Malfunction Detection Sensor malfunction may occur either in the thermistor or current transformer (CT) system. Relating to Thermistor Malfunction 1. Outdoor heat exchanger thermistor 2. Discharge pipe thermistor 3. Fin thermistor 4. Outside air thermistor Relating to CT Malfunction When the output frequency is more than 55 Hz and the input current is less than 1.25A, carry out abnormal adjustment. 3.13.
Control Specification Si04-306B 3.14 Forced Operation Mode Outline Forced operating mode includes only forced cooling. Detail Forced Cooling Item Forced operation allowing conditions Starting/adjustment Forced Cooling 1) The outdoor unit is not abnormal and not in the 3-minute stand-by mode. 2) The operating mode of the outdoor unit is the stop mode. 3) The forced operation is ON. The forced operation is allowed when the above “and” conditions are met.
Si04-306B Control Specification 3.16 Facility Setting Switch (cooling at low outdoor temperature) Outline FTKS50/60/71BVMB9 models 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 turning on switch B (SW4) on the PCB. If the outdoor temperature falls to –15°C or lower, the operation will stop.
Control Specification 66 Si04-306B Function and Control
Si04-306B Part 5 System Configuration 1. System Configuration............................................................................68 2. Instruction..............................................................................................69 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 2.10 2.11 2.12 System Configuration Safety Precautions .................................................................................69 Names of Parts.....................................................................
System Configuration Si04-306B 1. 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.
Si04-306B Instruction 2. Instruction Note: 2.1 This instruction is appropriate for FTK(X)D 50/60/71 BVM(A) models. 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 WARNINGS and CAUTIONS. Be sure to follow all precautions below: they are all important for ensuring safety.
Instruction Si04-306B • Do not stand or sit on the outdoor unit. Do not place any object on the unit to avoid injury, do not remove the fan guard. • Do not place anything under the indoor or outdoor unit that must be kept away from moisture. In certain conditions, moisture in the air may condense and drip. • After a long use, check the unit stand and fittings for damage. • Do not touch the air inlet and aluminum fins of outdoor unit. It may cause injury.
Si04-306B 2.
Instruction Si04-306B ■ Outdoor Unit 17 19 20 21 18 ■ Indoor Unit 1. Air filter 2. Photocatalytic deodorizing filter or Air purifying filter: • These filters are attached to the inside of the air filters. 3. Air inlet 4. Front grille 13. HOME LEAVE lamp (red): • Lights up when you use HOME LEAVE Operation. (page 16.) 14. Indoor Unit ON/OFF switch: • Push this switch once to start operation. Push once again to stop it. • The operation mode refer to the following table. 5. Grille tab 6.
Si04-306B Instruction ■ Remote Controller 1 ON 2 C 5 HOME LEAVE ON/OFF 3 POWERFUL TEMP MODE SILENT FAN SENSOR 6 4 7 9 11 SWING 8 13 ON 10 12 CANCEL 16 OFF 17 TIMER 15 14 < ARC433A21, A22 > 1. Signal transmitter: • It sends signals to the indoor unit. 2. Display: • It displays the current settings. (In this illustration, each section is shown with all its displays ON for the purpose of explanation.) 3. HOME LEAVE button: for HOME LEAVE operation (page 16.) 4.
Instruction 2.3 Si04-306B Preparation before Operation ■ To set the batteries 1. Press with a finger and slide the front cover to take it off. Position + and – correctly! 2 – + + 2. Set two dry batteries (AAA). – 3. Set the front cover as before. 3 1 ATTENTION ■ About batteries • When replacing the batteries, use batteries of the same type, and replace the two old batteries together. • When the system is not used for a long time, take the batteries out.
Si04-306B Instruction ■ To operate the remote controller • 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. • Do not drop the remote controller. Do not get it wet. • The maximum distance for communication is about 7 m. Receiver ■ To fix the remote controller holder on the wall 1. Choose a place from where the signals reach the unit. 2.
Instruction Si04-306B ■ To set the clock 1. Press “CLOCK button”. is displayed. C blinks. 2. Press “TIMER setting button” to set the clock to the present time. Holding down “ ” or “ ” button rapidly increases or decreases the time display. 3. Press “CLOCK button”. blinks. ■ Turn the breaker ON • Turning ON the breaker opens the flap, then closes it again. (This is a normal procedure.) HOME LEAVE POWERFUL MODE SILENT ON/OFF TEMP FAN SENSOR SWING ON 2 CANCEL 1.
Si04-306B 2.4 Instruction AUTO · DRY · COOL · HEAT · FAN Operation The air conditioner operates with the operation mode of your choice. From the next time on, the air conditioner will operate with the same operation mode. ■ To start operation C 1. Press “MODE selector button” and select a operation mode. • Each pressing of the button advances the mode setting in sequence.
Instruction Si04-306B ■ To change the air flow rate setting 5. Press “FAN setting button”. DRY mode AUTO or HEAT or COOL or FAN mode Five levels of air flow rate setting from “ plus “ ”“ ” to “ ” ” are available. The air flow rate setting is not variable. • Indoor unit quiet operation When the air flow is set to “ ”, the noise from the indoor unit will become quieter. Use this when making the noise quieter. The unit might lose power when the fan strength is set to weak level.
Si04-306B 2.5 Instruction Adjusting the Air Flow Direction You can adjust the air flow direction to increase your comfort. ■ To adjust the horizontal blade (flap) ON C 1. Press “SWING button”. The display will light up and the flap will begin to swing. 2. When the flap have reached the desired position, press “SWING” button once more. The display will go blank. The flap will stop moving.
Instruction Si04-306B ■ To 3-D Airflow 1. 3. press “SWING button”: the “ ”“ the flaps and louvers will move in turn. ” display will light up and ■ To cancel 3-D Airflow 2. 4. press “SWING button” Notes on louvers angles ■ ATTENTION • Always use a remote controller to adjust the louvers angles. In side the air outlet, a fan is rotating at a high speed. Notes on flap angle • When “SWING button” is selected, the flaps swinging range depends on the operation mode. (See the figure.
Si04-306B 2.6 Instruction POWERFUL Operation POWERFUL operation quickly maximizes the cooling (heating) effect in any operation mode. You can get the maximum capacity . ■ To start POWERFUL operation ON 1. Press “POWERFUL button”. • POWERFUL operation ends in 20 minutes. Then the system automatically operates again with the settings which were used before POWERFUL operation. • When using Powerful operation, there are some functions which are not available. ■ To cancel POWERFUL operation 2.
Instruction 2.7 Si04-306B OUTDOOR UNIT SILENT Operation OUTDOOR UNIT SILENT operation lowers the noise level of the outdoor unit by changing the frequency and fan speed on the outdoor unit. This function is convenient during night. ■ To start OUTDOOR UNIT SILENT operation C 1. Press “SILENT button”. ■ To cancel OUTDOOR UNIT SILENT operation 2. Press “SILENT button” again.
Si04-306B 2.8 Instruction HOME LEAVE Operation HOME LEAVE operation is a function which allows you to record your preferred temperature and air flow rate settings. ■ To start HOME LEAVE operation 1. Press “HOME LEAVE button” . • The HOME LEAVE lamp lights up. C 1, 2 HOME LEAVE ■ To cancel HOME LEAVE operation POWERFUL 2. Press “HOME LEAVE button” again. MODE SILENT • The HOME LEAVE lamp goes off. ON/OFF TEMP FAN SENSOR SWING ON CANCEL OFF TIMER Before using HOME LEAVE operation.
Instruction Si04-306B ■ What’s the HOME LEAVE operation Is there a set temperature and air flow rate which is most comfortable, a set temperature and air flow rate which you use the most? HOME LEAVE operation is a function that allows you to record your favorite set temperature and air flow rate. You can start your favorite operation mode simply by pressing the HOME LEAVE button on the remote control. This function is convenient in the following situations. ■ Useful in these cases. 1.
Si04-306B 2.9 Instruction INTELLIGENT EYE Operation “INTELLIGENT EYE” is the infrared sensor which detects the human movement. ■ To start INTELLIGENT EYE operation C 1. Press “SENSOR button”. ■ To cancel the INTELLIGENT EYE operation HOME LEAVE POWERFUL ON/OFF TEMP 2. Press “SENSOR button” again. MODE SILENT [EX.] FAN SENSOR SWING 1, 2 When somebody in the room ON • Normal operation CANCEL OFF TIMER When nobody in the room • 20 min. after, start energy saving operation.
Instruction Si04-306B “INTELLIGENT EYE” is useful for Energy Saving ■ Energy saving operation • Change the temperature –2°C in heating / +2°C in cooling / +1°C in dry mode from set temperature. • Decrease the air flow rate slightly in fan operation. (In FAN mode only) Notes on “INTELLIGENT EYE” • Application range is as follows. Vertical angle 90˚ (Side View) Horizontal angle 110˚ (Top View) 90˚ 7m 55˚ 55˚ 7m • Sensor may not detect moving objects further than 7m away.
Si04-306B Instruction 2.10 TIMER Operation Timer functions are useful for automatically switching the air conditioner on or off at night or in the morning. You can also use OFF TIMER and ON TIMER in combination. ■ To use OFF TIMER operation C • Check that the clock is correct. If not, set the clock to the present time. (page 9.) 1. Press “OFF TIMER button”. is displayed. HOME LEAVE ON/OFF POWERFUL TEMP MODE SILENT FAN SENSOR blinks. 2.
Instruction Si04-306B ■ To use ON TIMER operation • Check that the clock is correct. If not, set the clock to the present time (page 9.). 1. Press “ON TIMER button”. is displayed. C blinks. 2. Press “TIMER Setting button” until the time setting reaches the point you like. • Every pressing of either button increases or decreases the time setting by 10 minutes. Holding down either button changes the setting rapidly. 3. Press “ON TIMER button” again.
Si04-306B Instruction 2.11 Care and Cleaning CAUTION Before cleaning, be sure to stop the operation and turn the breaker OFF. Units ■ Indoor unit, Outdoor unit and Remote controller 1. Wipe them with dry soft cloth. ■ Front grille 1. Open the front grille. • Hold the grille by the tabs on the two sides and lift it until it stops with a click. 2. Remove the front grille. • Open the front panel further while sliding it to either the left or right and pulling it toward you.
Instruction Si04-306B Filters 1. Open the front grille. (page 24) 2. Pull out the air filters. • Push a little upwards the tab at the center of each air filter, then pull it down. 3. Take off the air purifying filter with photocatalytic deodorizing function. • Press the top of the air-cleaning filter onto the tabs (3 tabs at top). Then press the bottom of the filter up slightly, and press it onto the tabs (3 at bottom). tabs (3 tabs at top) tabs (3 at bottom) 4. Clean or replace each filter.
Si04-306B Instruction Check Check that the base, stand and other fittings of the outdoor unit are not decayed or corroded. Check that nothing blocks the air inlets and the outlets of the indoor unit and the outdoor unit. Check that the earth wire is not disconnected or broken. Check that the drain comes smoothly out of the drain hose during COOL or DRY operation. • If no drain water is seen, water may be leaking from the indoor unit. Stop operation and consult the service shop if this is the case.
Instruction Si04-306B 2.12 Troubleshooting 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. You should wait for about 3 minutes. Hot air does not flow out soon after the start of heating operation.
Si04-306B Instruction Check again. Please check again before calling a repair person. Case The air conditioner does not operate. (OPERATION lamp is off) 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? Cooling (Heating) effect is poor.
Instruction Si04-306B 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. Consult the service shop where you bought the air conditioner.
Si04-306B Part 6 Service Diagnosis 1. 2. 3. 4. Caution for Diagnosis............................................................................96 Problem Symptoms and Measures .......................................................97 Service Check Function ........................................................................98 Troubleshooting ....................................................................................99 4.1 4.2 4.3 4.4 4.5 4.6 4.7 4.8 4.9 4.10 4.11 4.12 4.13 4.14 4.15 4.16 4.
Caution for Diagnosis Si04-306B 1. Caution for Diagnosis The Operation lamp flashes 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, disabling equipment operation. 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.
Si04-306B Problem Symptoms and Measures 2. Problem Symptoms and Measures Symptom Check Item None of the units operates. Check the power supply. Check the type of the indoor units. Check the outdoor air temperature. Diagnosis with remote controller indication Check the remote controller addresses. Operation sometimes stops. Check the power supply. Check the outdoor air temperature.
Service Check Function Si04-306B 3. Service Check Function In the ARC433A series remote controller, the temperature display sections on the main unit indicate corresponding codes. 1. When the timer cancel button is held down for 5 seconds, a “00” indication flashes on the temperature display section. ON C HOME LEAVE POWERFUL MODE SILENT ON/OFF TEMP FAN SENSOR SWING ON CANCEL TIMER CANCEL button It cancels the timer setting. OFF TIMER < ARC433A21, A22 > (R2839) 2.
Si04-306B Troubleshooting 4. Troubleshooting 4.
Troubleshooting 4.2 Si04-306B Indoor Unit PCB Abnormality Remote Controller Display A1 Method of Malfunction Detection Evaluation of zero-cross detection of power supply by indoor unit. Malfunction Decision Conditions When there is no zero-cross detection in approximately 10 continuous seconds. Supposed Causes Faulty indoor unit PCB Faulty connector connection Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred.
Si04-306B 4.3 Troubleshooting Freeze-up Protection Control or High Pressure Control Remote Controller Display A5 Method of Malfunction Detection High pressure control (heat pump model only) Malfunction Decision Conditions High pressure control Supposed Causes Service Diagnosis During heating operations, the temperature detected by the indoor heat exchanger thermistor is used for the high pressure control (stop, outdoor fan stop, etc.
Troubleshooting Si04-306B Troubleshooting Caution Check No.6 Refer to P.133 Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Check the air passage. Is there any short-circuit? YES Provide sufficient air passage. NO Check the intake air filter. Is it very dirty? YES Clean the air filter. NO Check the dust accumulation on the indoor unit heat exchanger. Is it very dirty? YES Clean the heat exchanger. NO Check No.
Si04-306B 4.4 Troubleshooting Fan Motor (DC Motor) or Related Abnormality Remote Controller Display A6 Method of Malfunction Detection The rotation speed detected by the Hall IC during fan motor operation is used to determine abnormal fan motor operation. Malfunction Decision Conditions When the detected rotation speed is less than 50% of the H tap under maximum fan motor rotation demand.
Troubleshooting Si04-306B Troubleshooting Caution Check No.01 Refer to P.131 Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Turn off power supply and rotate fan by hand. Does fan rotate smoothly? NO Replace fan motor. YES Turn power ON and operate fan. Does it rotate? Turn off power supply NO and disconnect fan motor connector, then turn power ON. YES Check No.
Si04-306B 4.5 Troubleshooting Thermistor or Related Abnormality (Indoor Unit) Remote Controller Display C4, C9 Method of Malfunction Detection The temperatures detected by the thermistors are used to determine thermistor errors. Malfunction Decision Conditions When the thermistor input is more than 4.96 V or less than 0.04 V during compressor operation∗. ∗ (reference) When above about 212°C (less than 120 ohms) or below about –50°C (more than 1,860 kohms).
Troubleshooting 4.6 Si04-306B Signal Transmission Error (between Indoor and Outdoor Units) Remote Controller Display U4 Method of Malfunction Detection The data received from the outdoor unit in indoor unit-outdoor unit signal transmission is checked whether it is normal. Malfunction Decision Conditions When the data sent from the outdoor unit cannot be received normally, or when the content of the data is abnormal. Supposed Causes Faulty outdoor unit PCB. Faulty indoor unit PCB.
Si04-306B 4.7 Troubleshooting 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 4.8 Si04-306B Compressor Lock Remote Controller Display E6 Method of Malfunction Detection A compressor lock is detected by checking the compressor running condition through the position detection circuit. Malfunction Decision Conditions The position detection circuit detects a compressor frequency of below 10 Hz for 20 seconds or a frequency of above 160 Hz.
Si04-306B 4.9 Troubleshooting DC Fan Lock Remote Controller Display E7 Method of Malfunction Detection A fan motor or related error is detected by checking the high-voltage fan motor rpm being detected by the hall IC. Malfunction Decision Conditions The fan does not start in 30 seconds even when the fan motor is running. The system will be shut down if the error occurs 16 times.
Troubleshooting Si04-306B 4.10 Input Over Current Detection Remote Controller Display E8 Method of Malfunction Detection An input over-current is detected by checking the input current value being detected by CT with the compressor running. Malfunction Decision Conditions The following CT input with the compressor running continues for 2.5 seconds. Supposed Causes 110 CT input : Above 20 A The system will be shut down if the error occurs 16 times.
Si04-306B Troubleshooting Troubleshooting Caution Check No.7 Refer to P.134 Check No.8 Refer to P.135 Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. ∗ An input over-current may result from wrong internal wiring. If the wires have been disconnected and reconnected for part replacement, for example, and the system is interrupted by an input over-current, take the following procedure. Get restarted and measure the input current.
Troubleshooting Si04-306B 4.11 Four Way Valve Abnormality Remote Controller Display EA Method of Malfunction Detection The room temperature thermistor, the indoor unit heat exchanger thermistor, the outdoor temperature thermistor and the outdoor unit heat exchanger thermistor are checked to see if they function within their normal ranges in the operating mode.
Si04-306B Troubleshooting Troubleshooting Caution Check No.5 Refer to P.132 Check No.6 Refer to P.133 Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Four way valve coil disconnected (loose)? YES NO YES Harness out of connector? Check No.11 Refer to P.136 Correct. Reconnect. NO Check the continuity of the four way valve coil and harness. Disconnect the harness from the connector.
Troubleshooting Si04-306B 4.12 Discharge Pipe Temperature Control Remote Controller Display F3 Method of Malfunction Detection The discharge pipe temperature control (stop, frequency drooping, etc.) is checked with the temperature being detected by the discharge pipe thermistor. Malfunction Decision Conditions If a stop takes place 6 times successively due to abnormal discharge pipe temperature, the system will be shut down.
Si04-306B Troubleshooting 4.13 High Pressure Control in Cooling Remote Controller Display F6 Method of Malfunction Detection High-pressure control (stop, frequency drop, etc.) is activated in the cooling mode if the temperature being sensed by the heat exchanger thermistor exceeds the limit. Malfunction Decision Conditions Activated when the temperature being sensed by the heat exchanger thermistor rises above 60°C. (Deactivated when the said temperature drops below 50°C.
Troubleshooting Si04-306B Troubleshooting Caution Check No.4 Refer to P.131 Check No.6 Refer to P.133 Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Check the installation space. Check No.7 Installation condition check Abnormal Normal Check No.7 Refer to P.134 Check No.9 Outdoor fan check Abnormal Normal Check No.9 Refer to P.135 Change the air outlet grille position. Change the installation location. Clean the heat exchanger.
Si04-306B Troubleshooting 4.14 Position Sensor Abnormality Remote Controller Display H6 Method of Malfunction Detection A compressor startup failure is detected by checking the compressor running condition through the position detection circuit. Malfunction Decision Conditions The compressor fails to start in about 15 seconds after the compressor run command signal Supposed Causes is sent.
Troubleshooting Si04-306B 4.15 CT or Related Abnormality Remote Controller Display H8 Method of Malfunction Detection A CT or related error is detected by checking the compressor running frequency and CTdetected input current. Malfunction Decision Conditions The compressor running frequency is below 55 Hz and the CT input is below 0.1 V. (The input current is also below 1.25 A.) If this error repeats 4 times, the system will be shut down.
Si04-306B Troubleshooting Troubleshooting Caution Check No.12 Refer to P.137 Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Turn off the power and turn it on again. Get the system started. ∗ Running current as shown at right with relay cable 1 or 2? YES Current (guideline) NO Check No. 12 Check the capacitor voltage. Rising with increasing frequency 2 sec DC380±30V? Replace the outdoor unit PCB.
Troubleshooting Si04-306B 4.16 Thermistor or Related Abnormality (Outdoor Unit) Remote Controller Display P4, J3, J6, H9 Method of Malfunction Detection This type of error is detected by checking the thermistor input voltage to the microcomputer. [A thermistor error is detected by checking the temperature.] Malfunction Decision Conditions The thermistor input is above 4.96 V or below 0.04 V with the power on.
Si04-306B Troubleshooting Troubleshooting Caution Check No.6 Refer to P.133 Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Turn on the power again. Error displayed again on remote controller? NO Reconnect. YES Connector or thermistor disconnected? YES Reconnect. NO Check No. 6 Check the thermistor resistance value. NO Normal? YES Replace defective one(s) of the following thermistors.
Troubleshooting Si04-306B 4.17 Electrical Box Temperature Rise Remote Controller Display L3 Method of Malfunction Detection An electrical box temperature rise is detected by checking the radiation fin thermistor with the compressor off. Malfunction Decision Conditions With the compressor off, the radiation fin temperature is above 80°C (above 75°C in the case of 7.1kW class). (Reset is made when the temperature drops below 70°C.
Si04-306B Troubleshooting Troubleshooting Caution Check No.6 Refer to P.133 Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Turn off the power and turn it on again. Check No.7 Refer to P.134 Error again or outdoor unit fan activated? Check No.9 Refer to P.135 WARNING To cool down the electricals, the outdoor unit fan gets started when the radiation fin temperature rises above 78˚C and stops itself when it drops below 70˚C. YES NO Check No.
Troubleshooting Si04-306B 4.18 Radiation Fin Temperature Rise Remote Controller Display L4 Method of Malfunction Detection A radiation fin temperature rise is detected by checking the radiation fin thermistor with the compressor on. Malfunction Decision Conditions Supposed Causes 124 If the radiation fin temperature with the compressor on is above 90°C, If a radiation fin temperature rise takes place 4 times successively, the system will be shut down.
Si04-306B Troubleshooting Troubleshooting Check No.6 Refer to P.133 Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Turn off the power and turn it on again to get the system started. Check No.7 Refer to P.134 Error displayed again? Check No.9 Refer to P.135 YES NO Check No. 6 Check the thermistor resistance value. l Fin thermistor Check the radiation fin temperature.
Troubleshooting Si04-306B 4.19 Output Over Current Detection Remote Controller Display L5 Method of Malfunction Detection An output over-current 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. An output over-current input is fed from the output over-current detection circuit to the microcomputer.
Si04-306B Troubleshooting Troubleshooting Caution Check No.7 Refer to P.134 Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. ∗ An output over-current may result from wrong internal wiring. If the wires have been disconnected and reconnected for part replacement, for example, and the system is interrupted by an output over-current, take the following procedure. NO Stop valve fully open? Check No.8 Refer to P.135 Check No.13 Refer to P.
Troubleshooting Si04-306B 4.20 Insufficient Gas Remote Controller Display U0 Method of Malfunction Detection Gas shortage detection I : A gas shortage is detected by checking the CT-detected input current value and the compressor running frequency. Gas shortage detection II : A gas shortage is detected by checking the difference between indoor unit heat exchanger temperature and room temperature as well as the difference between outdoor unit heat exchanger temperature and room temperature.
Si04-306B Troubleshooting Troubleshooting Caution Check No.4 Refer to P.131 Check No.6 Refer to P.133 Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Any thermistor disconnected? NO YES Reconnect in position. * Discharge pipe thermistor * Indoor / outdoor unit heat exchanger thermistor * Room temperature thermistor * Outdoor air thermistor YES Open the stop valve. Stop valve closed? NO Check for gas leakage.
Troubleshooting Si04-306B 4.21 Low-voltage Detection Remote Controller Display U2 Method of Malfunction Detection An abnormal voltage rise or drop is detected by checking the detection circuit or DC voltage detection circuit.
Si04-306B Check 5. Check 5.1 How to Check 5.1.1 Fan Motor Connector Output Check Check No.01 1. 2. 3. 4. 5. Check connector connection. Check motor power supply voltage output (pins 4-7). Check motor control voltage (pins 4-3). Check rotation command voltage output (pins 4-2). Check rotation pulse input (pins 4-1). S1 7 6 5 4 3 2 1 Motor power supply voltage Unused Unused P.0V (reference potential) Motor control voltage (15 VDC) Rotation command voltage (1~ 6 VDC) Rotation pulse input (R3199) 5.1.
Check Si04-306B 5.1.3 Four Way Valve Performance Check Check No.5 Turn off the power and turn it on again. Start the heating-mode run. S80 voltage at DC 180-220 V 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 1500 ohms? NO YES Replace the four way valve coil. Replace the four way valve.
Si04-306B Check 5.1.4 Thermistor Resistance Check Check No.6 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 Service Diagnosis Temperature (°C) –20 211.0 (kΩ) –15 –10 150 116.5 –5 0 88 67.2 5 10 51.9 40 15 20 31.8 25 25 30 20 16 35 40 13 10.6 45 50 8.7 7.
Check Si04-306B 5.1.5 Installation Condition Check Check No.7 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 YES Change the position of the air discharge grille or the installation location. Change the position of the air discharge grille or the installation location.
Si04-306B Check 5.1.6 Discharge Pressure Check Check No.8 Discharge pressure check NO High Replace compessor. YES Is the stop valve open? NO Open the stop valve. YES Is the connection pipe deformed? NO Replace the pipe installed at the site. YES At the heat exchanger and air filter dirty? NO Clean. YES Replace the compressor. (R1443) 5.1.7 Outdoor Unit Fan System Check (With DC Motor) Check No.9 Check the outdoor unit fan system.
Check Si04-306B 5.1.8 Power Supply Waveforms Check Check No.10 Measure the power supply waveform between pins 1 and 3 on the terminal board, and check the waveform disturbance. 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] [Fig.2] 5.1.9 Inverter Units Refrigerant System Check Check No.
Si04-306B Check 5.1.10 Capacitor Voltage Check Check No.12 Before this checking, be sure to check the main circuit for short-circuit. Checking the capacitor voltage z With the circuit breaker still on, measure the voltage according to the drawing of the model in question. Be careful never to touch any live parts. Use the tester in the DC range.
Check Si04-306B 5.1.12 Main Circuit Electrolytic Capacitor Check Check No.14 Checking the main circuit electrolytic capacitor z Never touch any live parts for at least 10 minutes after turning off the circuit breaker. z If unavoidably necessary to touch a live part, make sure there is no DC voltage using the tester. z Check the continuity with the tester. Reverse the pins and make sure there is continuity. 5.1.13 Turning Speed Pulse Input on the Outdoor Unit PCB Check Check No.
Si04-306B Part 7 Removal Procedure 1. Indoor Unit...........................................................................................140 1.1 1.2 1.3 1.4 1.5 1.6 Removal of the Air Filter / Front Panel .................................................140 Removal of the Front Grille ..................................................................143 Removal of the Horizontal Blades / Vertical Blades .............................145 Removal of the Electrical Box / PCB / Swing Motor .................
Indoor Unit Si04-306B 1. Indoor Unit 1.1 Removal of the Air Filter / Front Panel Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Procedure Step Points 1. Features When the signal receiver catches a signal from the remote controller, it produces beep sound and the operation lamp blinks. 2. Remove the air filters. 1 Hold the front panel by the tabs on the both sides and lift it until it stops with a click.
Si04-306B Step Indoor Unit Procedure Points The right and left filters are interchangeable. Insert the air filters along grooves when installing. Set the air filters with displaying “FRONT” on the front side. Insert two claws of the air filter completely. 3. Remove an “air purifying filter with photocatalytic deodorizing function”. 1 Push up the bottom of an air purifying filter to undo the claws (2 on lower, 3 on upper) and take the filter out.
Indoor Unit Step Si04-306B Procedure Points 4. Remove the front panel. 1 While opening the front panel further than it stops, release both axes and remove the front panel. Slide the front panel side to side to release each axis. Align the right and left axes with grooves in turn and insert them to the end when installing.
Si04-306B 1.2 Indoor Unit Removal of the Front Grille Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points 1. Remove the service cover. 1 Loosen the screw and remove the service cover by the knob. No field setting switch is inside it. You can remove the front grille without detaching the service cover. 2. Remove the front grille. 1 Loosen the three fixing screws of the front grille.
Indoor Unit Procedure Step 2 3 144 Si04-306B Points Undo the three hooks on the top of the front grille. The front grille has three Pull the upper part of the front grille out and lift the lower part up, and then remove the front grille. Make sure that all the hooks hooks on the center and the both sides of the upper part. Refer to the removal procedure in a reverse way when reassembling. are placed securely when reassembling.
Si04-306B 1.3 Indoor Unit Removal of the Horizontal Blades / Vertical Blades Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure 1. Remove the horizontal blades. 1 Open the horizontal blades. 2 Undo the left pivot of the horizontal blades. 3 Bend the horizontal blades slightly and release the center pivots. Slide the horizontal blades to the left and release the right pivot.
Indoor Unit Si04-306B Procedure Step Points 2. Remove the vertical blades. 1 Undo the right and left pivots. 2 Undo the three claws. 3 Pull the vertical blades rightwards and remove it.
Si04-306B 1.4 Indoor Unit Removal of the Electrical Box / PCB / Swing Motor Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points 1. Remove the front grille. Parts layout 2. Remove the drip proof plate. 1 Loosen the screw. 3. Disconnect the indoor heat exchanger thermistor and the earth. Mind that not to lose the clip for the thermistor.
Indoor Unit Si04-306B Procedure Step 4. Remove the electrical box. 1 Disconnect the four connection wirings. Loosen the screw and remove the terminal strip board. Points You can remove the electrical box without detaching the terminal strip board. Screw: M4×25 2 Disconnect the connectors for fan motor (S1). 3 Disconnect the connectors for swing motor (S6, S8). 4 Loosen the fixing screw of the electrical box.
Si04-306B Indoor Unit Procedure Step Points Dislocate the electrical box to the left and undo the back claw. The electrical box has a claw Pull the electrical box out towards you. Hook the back claw of the 7 Loosen the screw on the electrical box. Screw: M4×16 8 Push the shelter up and undo the claw. 5 6 Removal Procedure on its back. electrical box when reassembling.
Indoor Unit Procedure Step 9 Si04-306B Press the receiver units down and release the claws on the upper side, and then undo the claws on the lower side. Points Release the claws on the upper side. 10 Cut the clamp. 11 The receiver units contain four PCBs. Remove each PCB with releasing claws. Disconnect every connector from each PCB. Remove the receiver units Cut the clamp. Clamps should be always 12 while pushing the claws of connectors. available. Fix it as it was before.
Si04-306B Indoor Unit Procedure Step Points 5. Remove the control PCB. 1 Undo the two claws on the lower side, and then the two claws on the upper side. Remove the control PCB. 2 Control PCB (indoor unit) S1: connector for the fan motor S21: HA S26: connector for the room temperature thermistor S32: connector for the heat exchanger thermistor 6. Remove the swing motor for horizontal blades. 1 Remove the screw of the swing motor.
Indoor Unit Procedure Step 7. Remove the swing motor for vertical blades. 1 Release the swing axis on the right side. 2 Loosen the two screws and detach the swing motor assembly. 3 Loosen the two screws and remove the swing motor. 152 Si04-306B Points Releasing the swing axis Six claws hold the assembly.
Si04-306B 1.5 Indoor Unit Removal of the Heat Exchanger Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points Remove the electrical box. 1. Disconnect the refrigerant piping. 1 Hold the indoor unit up by a piece of wood etc.. Caution If gas leaks, repair the spot of leaking, then collect all refrigerant from the unit. After conducting vacuum drying, recharge proper amount of refrigerant.
Indoor Unit Step Si04-306B Procedure Points 2. Remove the indoor unit. 1 Detach the indoor unit from the installation plate. 3. Remove the piping fixture. 1 Release the claw on the upper side of the piping fixture on the back of the unit. 4. Remove the heat exchanger. 1 Widen the auxiliary piping to the extent of 10°~20°.
Si04-306B Indoor Unit Procedure Step 2 Release the claws on the left side. 3 Push the fixing claws on the right side and release. 4 Pull the heat exchanger to the front side and undo the claws completely, and then lift it. Removal Procedure Points Caution When removing or reinstalling heat exchanger, be sure to wear protective gloves or wrap the heat exchanger with cloths. (Fins can cut fingers.
Indoor Unit 1.6 Si04-306B Removal of the Fan Rotor / Fan Motor Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure 1. Remove the right side panel. 1 Loosen the two screws. Points You can remove the fan rotor without detaching the right side panel. 2 Lift the right side panel and remove it. 2. Remove the fan rotor. 1 Loosen the screw and remove the fan motor fixture.
Si04-306B Indoor Unit Procedure Step 3. Remove the fan motor. 1 Remove the fan motor. Points Reassembling the fan motor (1) When reassembling the fan rotor, provide as much as 5mm of play between the side face of the rotor and the bottom frame. Side face of bottom frame Side face of rotor 4. Remove the bearing. 1 Remove the fan rotor. The bearing is on the left side. 2 Loosen the two screws and remove the mounting plate for the bearing. 3 The bearing is made of rubber.
Outdoor Unit Si04-306B 2. Outdoor Unit 2.1 Removal of the Panels and Plates Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Procedure Step Points 1. Remove the panels and plates. 1 Loosen the four screws and lift the top panel. Take care not to cut your finger by the fins of the heat exchanger. 2 158 Loosen the four screws and remove the discharge grille.
Si04-306B Outdoor Unit Procedure Step Points The front grille has four claws. Slide the discharge grille upwards and remove it. 3 Loosen the six screws of the front panel. 4 Push the front panel and undo the claw. Lift the clamp plate and remove it.
Outdoor Unit Procedure Step 5 Si04-306B Undo the right side claw, and then the left side claws. Remove the front panel. Points Lift the front panel and remove it while pushing the right side panel inwards. Lift the front panel and undo the left side claws. Fit the left side of the front panel first when installing.
Si04-306B Outdoor Unit Procedure Step Points 2. Remove the stop valve cover. 1 Loosen the screw of the stop valve cover. 2 Pull down the stop valve cover to undo the claws and remove it. The stop valve cover has six claws.
Outdoor Unit 2.2 Si04-306B Removal of the Fan Motor / Propeller Fan Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points Remove the top panel and the front panel. 1. Remove the electrical box cover. 1 Loosen the screw on the back of the shelter. Shelter This procedure is not necessary to remove the propeller fan only. Claws (R2688) 2 3 162 Undo the two claws and remove it.
Si04-306B Outdoor Unit Procedure Step Points 2. Remove the fan motor. 1 Disconnect the connector for fan motor (S70). 2 The illustration shows arrangement of the fan motor lead wire.
Outdoor Unit Procedure Step 3 Si04-306B Points Unscrew the washerfitted nut (M10) of the propeller fan with a spanner. Align mark of the propeller fan with D-cut section of the motor shaft when reassembling. 4 164 Remove the four screws from the fan motor.
Si04-306B Procedure Step 5 Outdoor Unit Pull the fan motor out. Points Put the lead wire through the back of the motor when reassembling.
Outdoor Unit 2.3 Si04-306B Removal of the PCB / Electrical Box Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points Remove the top panel and the front panel. 1. Remove the right side panel. 1 Disconnect the three connection wirings and the two earth wires. 2 Loosen the three screws of the right side panel. 3 Loosen the fixing screw of the electrical box.
Si04-306B Step Outdoor Unit Procedure Points Insert the two claws of the lower part and the one claw of the upper back when reassembling. Claw (R2701) Claws 2. Disconnect harnesses. 1 Loosen the fixing screw of the cable way board.
Outdoor Unit Procedure Step 2 Push the claw up to release the cable way board. Open the cable way board. 3 Disconnect the harnesses from the power supply PCB.
Si04-306B Outdoor Unit Procedure Step 5 Loosen the screw of the control PCB. 6 Undo the two claws and release the control PCB from the ditch of the front side. 7 Disconnect the harnesses while opening the control PCB. S10: to the terminal strip AC2: to the terminal strip 8 Disconnect the connectors.
Outdoor Unit Procedure Step 9 Disconnect the connectors.
Si04-306B Outdoor Unit Procedure Step 11 Disconnect the relaying wire connector for the compressor. 12 Release the clamp by pliers. Points (R2715) 13 Disconnect the reactor harness.
Outdoor Unit Procedure Step 14 Pull the clamp and draw the thermistor harness out from the back of the electrical box. 15 Loosen the screw of the electrical box.
Si04-306B Procedure Step 16 Outdoor Unit Points Release the clamp of the four way valve harness. (R2720) 17 Lift the electrical box and remove it.
Outdoor Unit 2.4 Si04-306B Removal of the Reactor Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points Remove the electrical box. 1. Remove the partition plate. 1 Release the clamp by pliers. 2 Loosen the two screws of the partition plate. The partition plate is fixed to the bottom frame with a claw.
Si04-306B Outdoor Unit Procedure Step 3 Lift the partition plate and remove it. 4 Loosen the screw. Slide the reactor and remove it from the partition plate.
Outdoor Unit 2.5 Si04-306B Removal of the Sound Blanket Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points 1 Disconnect the harness of each thermistor. 2 Release the discharge pipe thermistor. Pay attention to the direction Cut the clamp by nippers. Disconnect the outdoor heat exchanger thermistor.
Si04-306B Procedure Step 4 Outdoor Unit Remove the sound blanket (side-outer). 5 Remove the sound blanket (top-upper). 6 Remove the sound blanket (top-lower). 7 Remove the sound blanket (side-inner). Removal Procedure Points Since the piping ports on the sound blanket (side-outer) are torn easily, remove the blanket carefully. Since the piping ports on the sound blanket (side-inner) are torn easily, remove the blanket carefully.
Outdoor Unit 2.6 Si04-306B Removal of the Four Way Valve Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step 1 2 Procedure Loosen the screw of the four way valve coil. Heat up the brazed part of the four way valve and disconnect. Be sure to apply nitrogen replacement when heating up the brazed part. 3 Heat up every brazed part in turn and disconnect.
Si04-306B 2.7 Outdoor Unit Removal of the Electronic Expansion Valve Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure 1 Remove the electronic expansion valve coil. 2 Remove the sheets of putty. Points Before working, make sure that the refrigerant is empty in the circuit. 3 Heat up the two brazed parts of the electronic expansion valve and disconnect.
Outdoor Unit 2.8 Si04-306B Removal of the Compressor Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure 1 Remove the terminal cover. 2 Disconnect the lead wires of the compressor. Points Be careful so as not to burn the compressor terminals or the name plate. Make a note.
Si04-306B Outdoor Unit Procedure Step 3 Unscrew the nut of the compressor. 4 Remove the putty of the accumulator. Before working, make sure that the refrigerant is empty in the circuit. Be sure to apply nitrogen replacement when heating up the brazed part. 5 Heat up the brazed part of the discharge side and disconnect. 6 Heat up the brazed part of the suction side and disconnect. Points Warning Ventilate when refrigerant leaks during the work.
Outdoor Unit 182 Si04-306B Removal Procedure
Si04-306B Part 8 Others 1. Others .................................................................................................184 1.1 Test Run from the Remote Controller ..................................................184 1.2 Jumper Settings ...................................................................................
Others Si04-306B 1. Others 1.1 Test Run from the Remote Controller For Heat pump For Cooling Only 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.
Si04-306B 1.2 Others Jumper Settings 1.2.1 When Two Units are Installed in One Room When two indoor units are installed in one room, the two wireless remote controllers can be set for different addresses. How to set the different addresses Control PCB of the indoor unit (1) Remove the front grille. (3 screws) (2) Remove the electrical box (1-screw). (3) Remove the drip proof plate. (4 tabs) (4) Cut the address jumper JA on the control PCB.
Others 186 Si04-306B Others
Si04-306B Part 9 Appendix 1. Piping Diagrams..................................................................................188 1.1 Indoor Units ..........................................................................................188 1.2 Outdoor Units .......................................................................................190 2. Wiring Diagrams..................................................................................194 2.1 Indoor Units .......................................
Piping Diagrams Si04-306B 1. Piping Diagrams 1.1 Indoor Units FTK(X)S50/60BVMA, FTK(X)S50/60BVMB, FT(Y)S50/60BVMB, ATXS50CVMB FTKD50BVM, FTK(X)D50BVMA, FTK(X)D50BVMT, FTXD50BV4 INDOOR UNIT (7.9CuT) HEAT EXCHANGER THERMISTOR ON HEAT EXCH. CROSS FLOW FAN FIELD PIPING (6.4CuT) M FAN MOTOR FIELD PIPING (12.7CuT) (12.7CuT) REFRIGERANT FLOW COOLING HEATING 4D040081D FTK(X)S71BVMA, FTK(X)S71BVMB FTKD60BVM, FTK(X)D60BVMA, FTK(X)D60BVMT, FTKD18BVMS INDOOR UNIT (7.
Si04-306B Piping Diagrams FTKD71BVM, FTK(X)D71BVMA, FTK(X)D71BVMT, FTKD24/28BVMS, FTXD80CV4 INDOOR UNIT (7.9CuT) HEAT EXCHANGER THERMISTOR ON HEAT EXCH. CROSS FLOW FAN FIELD PIPING (9.5CuT) M FAN MOTOR FIELD PIPING (15.9CuT) REFRIGERANT FLOW COOLING (12.
Piping Diagrams 1.2 Si04-306B Outdoor Units 1.2.1 Cooling Only RKS50BVMA, RKS50BVMB(9), RS50BVMB OUTDOOR UNIT HEAT EXCHANGER OUTDOOR AIR TEMPERATURE THERMISTOR 7.9CuT 7.9CuT 12.7CuT CAPILLARY TUBE 1 MUFFLER WITH FILTER 6.4CuT 7.9CuT HEAT EXCHANGER THERMISTOR CAPILLARY TUBE 2 7.9CuT M REFRIGERANT FLOW COOLING 6.4CuT 6.4CuT 9.5CuT 7.9CuT 7.9CuT FILTER CAPILLARY TUBE 3 MOTOR OPERATED VALVE MUFFLER WITH FILTER PROPELLER FAN 7.9CuT 12.7CuT 12.7CuT 6.
Si04-306B Piping Diagrams RKD50BVM, RKD50BVMA, RKD50BVMT OUTDOOR UNIT HEAT EXCHANGER OUTDOOR TEMPARATURE THERMISTOR 7.9CuT 7.9CuT 7.9CuT CAPILLARY TUBE 1 7.9CuT 9.5CuT 7.9CuT 7.9CuT CAPILLARY TUBE 2 CAPILLARY TUBE 3 HEAT EXCHANGER THERMISTOR M MUFFLER WITH FILTER REFRIGERANT FLOW COOLING 6.4CuT 6.4CuT 12.7CuT FILTER CAPILLARY TUBE 4 MOTOR OPERATED VALVE MUFFLER WITH FILTER PROPELLER FAN 7.9CuT 12.7CuT 12.7CuT 7.9CuT 6.4CuT DISCHARGE PIPE THERMISTOR LIQUID STOP VALVE 12.
Piping Diagrams Si04-306B 1.2.2 Heat Pump RXS50BVMA, RXS50BVMB, RYS50BVMB, ARXS50CVMB OUTDOOR UNIT HEAT EXCHANGER OUTDOOR AIR TEMPERATURE THERMISTOR 7.9CuT 12.7CuT 7.9CuT CAPILLARY TUBE 1 7.9CuT MUFFLER WITH FILTER 6.4CuT 7.9CuT HEAT EXCHANGER THERMISTOR CAPILLARY TUBE 2 7.9CuT M PROPELLER FAN 12.7CuT MOTOR OPERATED VALVE MUFFLER WITH FILTER FOUR WAY VALVE ON:HEATING 12.7CuT 7.9CuT HEATING FILTER CAPILLARY TUBE 3 12.7CuT REFRIGERANT FLOW COOLING 6.4CuT 6.4CuT 7.9CuT 12.
Si04-306B Piping Diagrams RXD50BVMA, RXD50BVMT, RXD50BV4 OUTDOOR UNIT HEAT EXCHANGER OUTDOOR TEMPARATURE THERMISTOR 7.9CuT 7.9CuT 7.9CuT CAPILLARY TUBE 1 7.9CuT 7.9CuT 7.9CuT MUFFLER WITH FILTER CAPILLARY TUBE 2 CAPILLARY TUBE 3 HEAT EXCHANGER THERMISTOR M REFRIGERANT FLOW COOLING 6.4CuT 6.4CuT 15.9CuT FILTER CAPILLARY TUBE 4 HEATING PROPELLER FAN 12.7CuT FOUR WAY VALVE ON:HEATING MUFFLER WITH FILTER MOTOR OPERATED VALVE 12.7CuT 7.9CuT 12.7CuT 12.7CuT FIELD PIPING (6.
Wiring Diagrams Si04-306B 2. Wiring Diagrams 2.1 Indoor Units FTK(X)S50BVMA, FTK(X)S50BVMB, ATXS50CVMB, FTXD50BV4 FIELD WIRING. PCB3 S27 S26 PCB1 H1 ~ ~ RECTIFIER 1 Fu 3.15A H2 t˚ R1T S38 H3 TRANSMISSION CIRCUIT X1M 2 BLK 1 3 WHT 2 RED GRN/ YLW 3 CAUTION NOTE THAT OPERATION WILL RESTART AUTOMATICALLY IF THE MAIN POWER SUPPLY IS TURNED OFF AND THEN BACK ON AGAIN.
Si04-306B Wiring Diagrams FT(Y)S50BVMB FIELD WIRING. PCB3 S27 S26 PCB1 H1 ~ ~ RECTIFIER Fu 3.15A t˚ R1T S38 1 X1M 1 BLK H2 H3 TRANSMISSION CIRCUIT WHT 2 RED GRN / YLW 3 2 3 CAUTION NOTE THAT OPERATION WILL RESTART AUTOMATICALLY IF THE MAIN POWER SUPPLY IS TURNED OFF AND THEN BACK ON AGAIN.
Wiring Diagrams Si04-306B FTKD18/24/28BVMS 196 Appendix
Si04-306B 2.
Wiring Diagrams Si04-306B RKD18/24/28BVMS 198 Appendix
Si04-306B Index Numerics 00 ...........................................................................99 3 minutes stand-by ...........................................49, 55 3-D airflow ..............................................................40 A A1 .........................................................................100 A5 .........................................................................101 A6 .........................................................................103 AC1 ............
Si04-306B E5 ..................................................................107 E6 ..................................................................108 E7 ..................................................................109 E8 ..................................................................110 EA ..................................................................112 F3 ..................................................................114 F6 ............................................................
Si04-306B mode hierarchy ......................................................52 mold proof air filter .................................................49 mounting plate for the bearing .............................157 N names of parts .......................................................71 night set mode ........................................................44 O OL activation ........................................................107 ON/OFF button on Indoor unit ................................
Si04-306B outdoor heat exchanger thermistor .......................................50, 51, 121, 176 radiation fin thermistor ...................................121 room temperature thermistor .........................105 thermistor or related abnormality (indoor unit) .....105 thermistor or related abnormality (outdoor unit) ...120 thermistor resistance check .................................133 TIMER operation ....................................................87 top panel ...............................
Si04-306B Drawings & Flow Charts A H ARC433A series ....................................................98 automatic air flow control .......................................41 automatic operation ...............................................43 auto-swing ..............................................................40 heating peak-cut control ........................................ 57 high pressure control in cooling .......................... 115 HOME LEAVE operation ................................
Si04-306B FTKD18BVMS ...............................................188 FTKD24/28BVMS ..........................................189 FTKD50BVM .................................................188 FTKD60BVM .................................................188 FTKD71BVM .................................................189 FTXD50BV4 ..................................................188 FTXD80CV4 ..................................................189 RKD18/24/28BVMS .......................................
Head office: Umeda Center Bldg., 4-12, Nakazaki-Nishi 2-chome, Kita-ku, Osaka, 530-8323 Japan Zandvoordestraat 300, B-8400 Oostende, Belgium Tokyo office: Shinjuku Sumitomo Bldg., 6-1 Nishi-Shinjuku 2-chome, Shinjuku-ku, Tokyo, 163-0235 Japan z For further improvement, specifications or designs are subject to change without prior notice.
