Daikin BA-Series Service Manual
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Daikin BA-Series Service Manual

Inverter pair floor / ceiling suspended dual type ba-series
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Service
Manual
Inverter Pair
Floor / Ceiling Suspended Dual Type
BA-Series
SiBE05-722ED
[Applied Models]
●
Inverter Pair : Cooling Only
●
Inverter Pair : Heat Pump

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Summary of Contents for Daikin BA-Series

  • Page 1 SiBE05-722ED Service Manual Inverter Pair Floor / Ceiling Suspended Dual Type BA-Series [Applied Models] ● Inverter Pair : Cooling Only ● Inverter Pair : Heat Pump...
  • Page 2 SiBE05-722ED Inverter Pair Floor / Ceiling Suspended Dual Type BA-Series Cooling Only Indoor Unit FLKS25BAVMB FLKS35BAVMB Outdoor Unit RKS25E2V1B RKS25G2V1B RKS35E2V1B RKS35G2V1B RKS25G2V1B9 RKS35G2V1B9 Heat Pump Indoor Unit FLXS25BAVMB FLXS35BAVMB9 FLXS35BAVMB Outdoor Unit RXS25E2V1B RXS25G2V1B RXS25J2V1B RXS35L2V1B RXS35E2V1B RXS35G2V1B RXS35J2V1B...

  • Page 3: Table Of Contents

    SiBE05-722ED 1. Safety Cautions..................v 1.1 Warnings and Cautions Regarding Safety of Workers......v 1.2 Warnings and Cautions Regarding Safety of Users....... vii 2. Used Icons ....................x Part 1 List of Functions ..............1 1. Functions....................2 Part 2 Specifications ..............7 1. Specifications ..................8 1.1 Cooling Only.....................8 1.2 Heat Pump .....................11 Part 3 Printed Circuit Board Connector Wiring Diagram ...
  • Page 4 SiBE05-722ED 3.11 Electronic Expansion Valve Control ............49 3.12 Malfunctions ...................52 Part 5 Remote Controller ............53 1. Remote Controller .................54 Part 6 Service Diagnosis............. 56 1. General Problem Symptoms and Check Items ........57 2. Troubleshooting with LED ..............58 2.1 Indoor Unit....................58 2.2 Outdoor Unit ...................58 3.
  • Page 5 SiBE05-722ED 5.13 Power Module Check ................109 Part 7 Trial Operation and Field Settings......... 111 1. Pump Down Operation................112 2. Forced Cooling Operation ..............113 3. Trial Operation ..................114 4. Field Settings ..................115 4.1 When 2 Units are Installed in 1 Room..........115 4.2 Facility Setting Jumper (cooling at low outdoor temperature) ....116 4.3 Jumper and Switch Settings..............117 5.

  • Page 6: Safety Cautions

    Safety Cautions SiBE05-722ED 1. Safety Cautions Be sure to read the following safety cautions before conducting repair work. After the repair work is complete, be sure to conduct a test operation to ensure that the equipment operates normally, and explain the cautions for operating the product to the customer.
  • Page 7 SiBE05-722ED Safety Cautions Warning Do not start or stop the air conditioner operation by plugging or unplugging the power cable plug. Plugging or unplugging the power cable plug to operate the equipment may cause an electrical shock or fire. Be sure to wear a safety helmet, gloves, and a safety belt when working at a high place (more than 2 m).

  • Page 8: Warnings And Cautions Regarding Safety Of Users

    Safety Cautions SiBE05-722ED Caution Use the welder in a well-ventilated place. Using the welder in an enclosed room may cause oxygen deficiency. Warnings and Cautions Regarding Safety of Users Warning Do not store the equipment in a room with successive fire sources (e.g., naked flame, gas appliance, electric heater).
  • Page 9 SiBE05-722ED Safety Cautions Warning Do not mix air or gas other than the specified refrigerant (R-32 / R-410A / R-22) in the refrigerant system. If air enters the refrigerating system, an excessively high pressure results, causing equipment damage and injury. If the refrigerant gas leaks, be sure to locate the leaking point and repair it before charging the refrigerant.
  • Page 10 Safety Cautions SiBE05-722ED 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 may cause excessive heat generation, fire or an electrical shock. If the installation platform or frame has corroded, replace it.

  • Page 11: Used Icons

    SiBE05-722ED Used Icons 2. Used Icons The following icons are used to attract the attention of the reader to specific information. Icon Type of Description Information Warning A Warning is used when there is danger of personal injury. Warning Caution A Caution is used when there is danger that the reader, through incorrect manipulation, may damage equipment, loose data, get Caution...

  • Page 12: Part 1 List Of Functions

    SiBE05-722ED Part 1 List of Functions 1. Functions....................2 List of Functions...

  • Page 13: Functions

    SiBE05-722ED Functions 1. Functions Category Functions Category Functions Basic Inverter (with inverter power control) Health & Air-purifying filter Function Clean –10 –10 Operation limit for cooling (°CDB) ~ 46 Photocatalytic deodorizing filter ~ 46 ★ –15 Air-purifying filter with photocatalytic Operation limit for heating (°CWB) —...
  • Page 14 Functions SiBE05-722ED Category Functions Category Functions Basic Inverter (with inverter power control) Health & Air-purifying filter Function Clean –10 –10 Operation limit for cooling (°CDB) ~ 46 ~ 46 Photocatalytic deodorizing filter ★ ★ –15 Air-purifying filter with photocatalytic Operation limit for heating (°CWB) —...
  • Page 15 SiBE05-722ED Functions Category Functions Category Functions Basic Inverter (with inverter power control) Health & Air-purifying filter Function Clean –10 –10 Operation limit for cooling (°CDB) ~ 46 ~ 46 Photocatalytic deodorizing filter ★ ★ –15 Air-purifying filter with photocatalytic Operation limit for heating (°CWB) —...
  • Page 16 Functions SiBE05-722ED Category Functions Category Functions Basic Inverter (with inverter power control) Health & Air-purifying filter Function Clean –10 –10 Operation limit for cooling (°CDB) ~ 46 ~ 46 Photocatalytic deodorizing filter ★ ★ –15 Air-purifying filter with photocatalytic – Operation limit for heating (°CWB) ~ 18 ~ 18...
  • Page 17 SiBE05-722ED Functions Category Functions Category Functions Basic Inverter (with inverter power control) Health & Air-purifying filter Function Clean –10 Operation limit for cooling (°CDB) ~ 46 Photocatalytic deodorizing filter ★ Air-purifying filter with photocatalytic – Operation limit for heating (°CWB) ~ 18 deodorizing function (option) PAM control...

  • Page 18: Part 2 Specifications

    SiBE05-722ED Part 2 Specifications 1. Specifications ..................8 1.1 Cooling Only.....................8 1.2 Heat Pump .....................11 Specifications...

  • Page 19: Specifications

    SiBE05-722ED Specifications 1. Specifications Cooling Only 50 Hz, 220 - 230 - 240 V Indoor Unit FLKS25BAVMB FLKS35BAVMB Model Outdoor Unit RKS25E2V1B RKS35E2V1B 2.5 (1.2 ~ 3.0) 3.5 (1.2 ~ 3.8) Capacity Rated (Min. ~ Max.) Btu/h 8,500 (4,100 ~ 10,200) 11,900 (4,100 ~ 13,000) kcal/h 2,150 (1,030 ~ 2,580)
  • Page 20 Specifications SiBE05-722ED 50 Hz, 220 - 230 - 240 V Indoor Unit FLKS25BAVMB FLKS35BAVMB Model Outdoor Unit RKS25G2V1B RKS35G2V1B 2.5 (1.2 ~ 3.0) 3.5 (1.2 ~ 3.8) Capacity Rated (Min. ~ Max.) Btu/h 8,500 (4,100 ~ 10,200) 11,900 (4,100 ~ 13,000) kcal/h 2,150 (1,030 ~ 2,580) 3,010 (1,030 ~ 3,270)
  • Page 21 SiBE05-722ED Specifications 50 Hz, 220 - 230 - 240 V Indoor Unit FLKS25BAVMB FLKS35BAVMB Model Outdoor Unit RKS25G2V1B9 RKS35G2V1B9 2.5 (1.2 ~ 3.0) 3.5 (1.2 ~ 3.8) Capacity Rated (Min. ~ Max.) Btu/h 8,500 (4,100 ~ 10,200) 11,900 (4,100 ~ 13,000) kcal/h 2,150 (1,030 ~ 2,580) 3,010 (1,030 ~ 3,270)

  • Page 22: Heat Pump

    Specifications SiBE05-722ED Heat Pump 50 Hz, 220 - 230 - 240 V Indoor Unit FLXS25BAVMB FLXS35BAVMB Model RXS25E2V1B RXS35E2V1B Outdoor Unit Cooling Heating Cooling Heating 2.5 (1.2 ~ 3.0) 3.4 (1.2 ~ 4.5) 3.5 (1.2 ~ 3.8) 4.0 (1.2 ~ 5.0) Capacity Rated (Min.
  • Page 23 SiBE05-722ED Specifications 50 Hz, 220 - 230 - 240 V Indoor Unit FLXS25BAVMB FLXS35BAVMB Model RXS25G2V1B RXS35G2V1B Outdoor Unit Cooling Heating Cooling Heating 2.5 (1.2 ~ 3.0) 3.4 (1.2 ~ 4.5) 3.5 (1.2 ~ 3.8) 4.0 (1.2 ~ 5.0) Capacity Rated (Min. ~ Max.) Btu/h 8,500 (4,100 ~ 10,200) 11,600 (4,100 ~ 15,400)
  • Page 24 Specifications SiBE05-722ED 50 Hz, 220 - 230 - 240 V Indoor Unit FLXS25BAVMB FLXS35BAVMB Model RXS25G2V1B9 RXS35G2V1B9 Outdoor Unit Cooling Heating Cooling Heating 2.5 (1.2 ~ 3.0) 3.4 (1.2 ~ 4.5) 3.5 (1.2 ~ 3.8) 4.0 (1.4 ~ 5.0) Capacity Rated (Min. ~ Max.) Btu/h 8,500 (4,100 ~ 10,200) 11,600 (4,100 ~ 15,400)
  • Page 25 SiBE05-722ED Specifications 50 Hz, 220 - 230 - 240 V Indoor Unit FLXS25BAVMB FLXS35BAVMB Model RXS25J2V1B RXS35J2V1B Outdoor Unit Cooling Heating Cooling Heating 2.5 (1.2 ~ 3.0) 3.4 (1.2 ~ 4.5) 3.5 (1.2 ~ 3.8) 4.0 (1.4 ~ 5.0) Capacity Rated (Min. ~ Max.) Btu/h 8,500 (4,100 ~ 10,200) 11,600 (4,100 ~ 15,400)
  • Page 26 Specifications SiBE05-722ED 50 Hz, 220 - 230 - 240 V Indoor Unit FLXS25BAVMB FLXS35BAVMB Model RXS25K3V1B RXS35K2V1B Outdoor Unit Cooling Heating Cooling Heating 2.5 (1.2 ~ 3.0) 3.4 (1.2 ~ 4.5) 3.5 (1.2 ~ 3.8) 4.0 (1.4 ~ 5.0) Capacity Rated (Min. ~ Max.) Btu/h 8,500 (4,100 ~ 10,200) 11,600 (4,100 ~ 15,400)
  • Page 27 SiBE05-722ED Specifications 50 Hz, 220 - 230 - 240 V Indoor Unit FLXS35BAVMB9 Model RXS35L2V1B Outdoor Unit Cooling Heating 3.5 (1.2 ~ 3.8) 4.0 (1.4 ~ 5.0) Capacity Rated (Min. ~ Max.) Btu/h 11,900 (4,100 ~ 13,000) 13,600 (4,100 ~ 17,100) kcal/h 3,010 (1,030 ~ 3,270) 3,440 (1,030 ~ 4,300)

  • Page 28: Part 3 Printed Circuit Board Connector Wiring Diagram

    SiBE05-722ED Part 3 Printed Circuit Board Connector Wiring Diagram 1. Indoor Unit.....................18 2. Outdoor Unit..................20 2.1 RK(X)S25/35E2V1B ................20 2.2 RK(X)S25/35G2V1B................22 2.3 RK(X)S25/35G2V1B9, RXS25/35J2V1B, RXS25K3V1B, RXS35K2V1B, RXS35L2V1B..............24 Printed Circuit Board Connector Wiring Diagram...

  • Page 29: Indoor Unit

    SiBE05-722ED Indoor Unit 1. Indoor Unit Control PCB (PCB1) 1) S6 Connector for swing motor (horizontal swing) 2) S7 Connector for AC fan motor 3) S21 Connector for centralized control (HA) 4) S24 Connector for display PCB 5) S26 Connector for signal receiver PCB 6) S32 Connector for indoor heat exchanger thermistor 7) S37...
  • Page 30 Indoor Unit SiBE05-722ED Power Supply PCB (PCB2) 1) S36 Connector for control PCB 2) H1, H2, H3 Connector for terminal board 3) H4, H5, H6 Connector for AC fan motor 4) V1 Varistor 5) FU1 Fuse (3.15 A, 250 V) 2P084361-1 Display PCB (PCB3)

  • Page 31: Outdoor Unit

    SiBE05-722ED Outdoor Unit 2. Outdoor Unit RK(X)S25/35E2V1B Main PCB (PCB2) 1) S10 Connector for filter PCB 2) S20 Connector for electronic expansion valve coil 3) S30 Connector for compressor 4) S40 Connector for overload protector 5) S70 Connector for fan motor 6) S80 Connector for four way valve coil 7) S90...
  • Page 32 Outdoor Unit SiBE05-722ED Filter PCB (PCB1) 1) S11 Connector for main PCB 2) HL1, HN1, S Connector for terminal board 3) E Terminal for earth wire 4) HC1, HC2 Connector for main PCB HL2, HN2 5) HR1 Connector for reactor 6) FU3 Fuse (20 A, 250 V) 7) V2, V3...

  • Page 33: Rk(X)S25/35G2V1B

    SiBE05-722ED Outdoor Unit RK(X)S25/35G2V1B Main PCB (PCB2) 1) S10 Connector for filter PCB 2) S20 Connector for electronic expansion valve coil 3) S30 Connector for compressor 4) S40 Connector for overload protector 5) S50 Connector for magnetic relay 6) S70 Connector for fan motor 7) S80 Connector for four way valve coil...
  • Page 34 Outdoor Unit SiBE05-722ED Filter PCB (PCB1) 1) S11 Connector for main PCB 2) HL1, HN1, S Connector for terminal board 3) E1 Terminal for earth wire 4) E2 Connector for terminal board (earth) 5) HL2, HN2 Connector for main PCB 6) HR1 Connector for reactor 7) FU3...

  • Page 35: Rk(X)S25/35G2V1B9, Rxs25/35J2V1B, Rxs25K3V1B, Rxs35K2V1B, Rxs35L2V1B

    SiBE05-722ED Outdoor Unit RK(X)S25/35G2V1B9, RXS25/35J2V1B, RXS25K3V1B, RXS35K2V1B, RXS35L2V1B Main PCB (PCB2) 1) S10 Connector for filter PCB 2) S20 Connector for electronic expansion valve coil 3) S40 Connector for overload protector 4) S50 Connector for magnetic relay 5) S70 Connector for fan motor 6) S80 Connector for four way valve coil 7) S90...
  • Page 36 Outdoor Unit SiBE05-722ED Filter PCB (PCB1) 1) S11 Connector for main PCB 2) AC1, AC2, S Connector for terminal board 3) E1, E2 Terminal for earth wire 4) HL2, HN2 Connector for main PCB 5) HR1 Connector for reactor 6) FU1 Fuse (3.15 A, 250 V) 7) FU3 Fuse (20 A, 250 V)

  • Page 37: Part 4 Function And Control

    SiBE05-722ED Part 4 Function and Control 1. Main Functions..................27 1.1 Temperature Control ................27 1.2 Frequency Principle................27 1.3 Airflow Direction Control.................29 1.4 Fan Speed Control for Indoor Unit ............29 1.5 Program Dry Operation ................30 1.6 Automatic Operation................31 1.7 Thermostat Control.................32 1.8 NIGHT SET Mode ..................33 1.9 HOME LEAVE Operation ...............34 1.10 Inverter POWERFUL Operation .............35 1.11 Clock Setting ..................36...

  • Page 38: Main Functions

    Main Functions SiBE05-722ED 1. Main Functions Temperature Control Definitions of The definitions of temperatures are classified as following. Temperatures Room temperature: temperature of lower part of the room Set temperature: temperature set by remote controller Room thermistor temperature: temperature detected by room temperature thermistor Target temperature: temperature determined by microcomputer Target temperature Room thermistor temperature...
  • Page 39 SiBE05-722ED Main Functions Drawing of The following drawing shows a schematic view of the inverter principle: Inverter Refrigerant circulation rate (high) high speed Amount of heat Amount of heat exchanged air (large) exchanged air (large) high f low f Amount of heat Amount of heat exchanged air (small) exchanged air (small)

  • Page 40: Airflow Direction Control

    Main Functions SiBE05-722ED 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 Heating Ceiling (R2964) (R2963) Floor (R2967) (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.

  • Page 41: Program Dry Operation

    SiBE05-722ED Main Functions Program Dry Operation Outline Program dry operation removes humidity while preventing the room temperature from lowering. Since the microcomputer controls both the temperature and airflow rate, the temperature adjustment and FAN setting buttons are inoperable. Detail The microcomputer automatically sets the temperature and airflow rate. The difference between the room thermistor temperature at start-up and the target temperature is divided into two zones.

  • Page 42: Automatic Operation

    Main Functions SiBE05-722ED Automatic Operation Outline 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.

  • Page 43: Thermostat Control

    SiBE05-722ED Main Functions 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 Conditions 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.

  • Page 44: Night Set Mode

    Main Functions SiBE05-722ED NIGHT SET Mode Outline When the OFF TIMER is set, NIGHT SET Mode is automatically activated. NIGHT SET Mode keeps the airflow rate setting. Detail 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.

  • Page 45: Home Leave Operation

    SiBE05-722ED Main Functions HOME LEAVE Operation Outline HOME LEAVE operation is a function that allows you to record your preferred set temperature and airflow rate. You can start your preferred operation mode simply by pressing the HOME LEAVE button on the remote controller. Detail The indoor unit is operated according to the set temperature and airflow rate for HOME LEAVE which were preset in the memory of the remote controller.

  • Page 46: Inverter Powerful Operation

    Main Functions SiBE05-722ED Setting Temperature and Airflow Rate When using HOME LEAVE operation for the first time, set your preferred temperature and airflow rate for HOME LEAVE operation. Initial setting Selectable range Temperature Airflow rate Temperature Airflow rate Cooling 25°C 18 ~ 32°C 5 steps, Heating...

  • Page 47: Clock Setting

    SiBE05-722ED Main Functions 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 ▲...

  • Page 48: Other Functions

    Main Functions SiBE05-722ED 1.12 Other Functions 1.12.1 Hot-Start Function In order to prevent the cold air blast that normally occurs when heating operation is started, the temperature of the indoor heat exchanger is detected, and the airflow is either stopped or significantly weakened resulting in comfortable heating.

  • Page 49: Function Of Thermistor

    SiBE05-722ED Function of Thermistor 2. Function of Thermistor Electronic expansion valve Four way valve Compressor (R14247) (1) Outdoor Heat 1. The outdoor heat exchanger thermistor is used for controlling the target discharge pipe temperature. The system sets the target discharge pipe temperature according to the Exchanger outdoor and indoor heat exchanger temperature, and controls the electronic expansion valve Thermistor...

  • Page 50: Control Specification

    Control Specification SiBE05-722ED 3. Control Specification Mode Hierarchy Outline The air conditioner control has normal operation mode, forced operation mode, and power transistor test mode for installation and servicing. Detail Cooling Only Model Air conditioner control mode Forced operstion mode Forced cooling operation (for pump down operstion) Power transistor test mode Normal operation mode...

  • Page 51: Frequency Control

    SiBE05-722ED Control Specification Frequency Control Outline The compressor frequency is determined according to the difference between the room thermistor temperature and the target temperature. When the shift of the frequency is less than zero (∆F<0) by PI control, the target frequency is used as the command frequency. Dropping function Input current control, etc.
  • Page 52 Control Specification SiBE05-722ED 3. Determine lower limit frequency The maximum value is set as a lower limit frequency among the frequency lower limits of the following functions: Four way valve operation compensation, draft prevention, pressure difference upkeep. 4. Determine prohibited frequency There is a certain prohibited frequency such as a power supply frequency.

  • Page 53: Controls At Mode Changing / Start-Up

    SiBE05-722ED Control Specification 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...

  • Page 54: Compressor Protection Function

    Control Specification SiBE05-722ED 3.3.3 Four Way Valve Operation Compensation Outline At the beginning of operation as the four way valve is switched, the pressure difference to activate the four way valve is acquired when the output frequency is higher than a certain fixed frequency, for a certain fixed time.

  • Page 55: Discharge Pipe Temperature Control

    SiBE05-722ED Control Specification Discharge Pipe Temperature Control Outline 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. Detail Stop zone A˚C...

  • Page 56: Input Current Control

    Control Specification SiBE05-722ED Input Current Control Outline The microcomputer calculates the input current while the compressor is running, and sets the frequency upper limit based on the input current. In case of heat pump models, this control is the upper limit control of frequency and takes priority over the lower limit control of four way valve operation compensation.

  • Page 57: Freeze-Up Protection Control

    SiBE05-722ED Control Specification Freeze-up Protection Control 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.) The operating frequency limitation is judged with the indoor heat exchanger temperature. Indoor heat exchanger thermistor temperature 13˚C...

  • Page 58: Outdoor Fan Control

    Control Specification SiBE05-722ED 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.

  • Page 59: Defrost Control

    SiBE05-722ED Control Specification 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 defrosting. Detail Conditions for Starting Defrost The starting conditions are determined with the outdoor temperature and the outdoor heat exchanger temperature.

  • Page 60: Electronic Expansion Valve Control

    Control Specification SiBE05-722ED 3.11 Electronic Expansion Valve Control Outline 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.

  • Page 61: Pressure Equalizing Control

    SiBE05-722ED Control Specification 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 is equalized. 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.
  • Page 62 Control Specification SiBE05-722ED 3.11.7 Discharge Pipe Thermistor Disconnection Control 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.

  • Page 63: Malfunctions

    SiBE05-722ED Control Specification 3.12 Malfunctions 3.12.1 Sensor Malfunction Detection Sensor malfunction can be detected in the following thermistors: 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.

  • Page 64: Part 5 Remote Controller

    SiBE05-722ED Part 5 Remote Controller 1. Remote Controller .................54 Remote Controller...

  • Page 65: Remote Controller

    ★1 HOME LEAVE operation P.34 ★2 POWERFUL operation P.35 Note: Refer to the operation manual of applicable model for detail. You can download operation manuals from DISTRIBUTOR’S PAGE: DISTRIBUTOR’S PAGE → Product Information → Operation/Installation Manual (URL: http://global.daikin.com/Daikin/global/Distributors_admin/user_mng/login.php) Remote Controller...

  • Page 66: Mode Button

    Refer to the following pages for detail. ★3 Auto-swing setting P.29 ★4 Clock setting P.36 Note: Refer to the operation manual of applicable model for detail. You can download operation manuals from DISTRIBUTOR’S PAGE: DISTRIBUTOR’S PAGE → Product Information → Operation/Installation Manual (URL: http://global.daikin.com/Daikin/global/Distributors_admin/user_mng/login.php) Remote Controller...

  • Page 67: Part 6 Service Diagnosis

    SiBE05-722ED Part 6 Service Diagnosis 1. General Problem Symptoms and Check Items ........57 2. Troubleshooting with LED ..............58 2.1 Indoor Unit....................58 2.2 Outdoor Unit ...................58 3. Service Diagnosis .................59 4. Troubleshooting ..................62 4.1 Error Codes and Description ..............62 4.2 Indoor Unit PCB Abnormality ..............63 4.3 Freeze-up Protection Control / Heating Peak-cut Control ......64 4.4 Fan Motor (AC Motor) or Related Abnormality........65 4.5 Thermistor or Related Abnormality (Indoor Unit)........67...

  • Page 68: General Problem Symptoms And Check Items

    General Problem Symptoms and Check Items SiBE05-722ED 1. General Problem Symptoms and Check Items Symptom Check Item Details Reference Page The unit does not operate. Check the power supply. Check if the rated voltage is supplied. — Check the type of the indoor unit. Check if the indoor unit type is compatible with —...

  • Page 69: Troubleshooting With Led

    SiBE05-722ED Troubleshooting with LED 2. Troubleshooting with LED 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.

  • Page 70: Service Diagnosis

    Service Diagnosis SiBE05-722ED 3. Service Diagnosis 1. When the timer cancel button is held down for 5 seconds, 00 is displayed on the temperature Method 1 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.
  • Page 71 SiBE05-722ED Service Diagnosis 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 TEMP ▼ button and change the number until you hear the two consecutive beeps or the long beep.
  • Page 72 Service Diagnosis SiBE05-722ED 5. Press the TEMP ▲ or TEMP ▼ 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. ★...

  • Page 73: Troubleshooting

    SiBE05-722ED Troubleshooting 4. Troubleshooting Error Codes and Description Reference Error Codes Description Page System Normal — U0★ Refrigerant shortage Low-voltage detection or over-voltage detection Signal transmission error (between indoor unit and outdoor unit) Unspecified voltage (between indoor unit and outdoor unit) Indoor Indoor unit PCB abnormality Unit...

  • Page 74: Indoor Unit Pcb Abnormality

    Troubleshooting SiBE05-722ED Indoor Unit PCB Abnormality Error Code Method of Error The system checks if the circuit works properly within the microcomputer of the indoor unit. Detection Error Decision The system cannot set the internal settings. Conditions Supposed Wrong models interconnected Defective indoor unit PCB Causes Disconnection of connector...

  • Page 75: Freeze-Up Protection Control / Heating Peak-Cut Control

    SiBE05-722ED Troubleshooting Freeze-up Protection Control / Heating Peak-cut Control Error Code Method of Error Freeze-up protection control During cooling operation, the freeze-up protection control (operation halt) is activated Detection according to the temperature detected by the indoor heat exchanger thermistor. Heating peak-cut control During heating operation, the temperature detected by the indoor heat exchanger thermistor is used for the heating peak-cut control (operation halt, outdoor fan stop, etc.)

  • Page 76: Fan Motor (Ac Motor) Or Related Abnormality

    Troubleshooting SiBE05-722ED Fan Motor (AC Motor) or Related Abnormality Error Code Method of Error The rotation speed detected by the Hall IC during fan motor operation is used to determine abnormal fan motor operation. Detection Error Decision 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.
  • Page 77 SiBE05-722ED Troubleshooting Be sure to turn off the power switch before connecting or disconnecting Troubleshooting Caution connectors, or parts may be damaged. Check No.04 Check the power supply voltage. Refer to P.100 Is the voltage fluctuation Correct the power supply. within ±10% from the rated value? Start operation.

  • Page 78: Thermistor Or Related Abnormality (Indoor Unit)

    Troubleshooting SiBE05-722ED Thermistor or Related Abnormality (Indoor Unit) C4 , C9 Error Code Method of Error The temperatures detected by the thermistors determine thermistor errors. Detection Error Decision The thermistor input is 4.96 V and more or 0.04 V and less during compressor operation. Conditions Supposed Disconnection of connector...

  • Page 79: Refrigerant Shortage

    SiBE05-722ED Troubleshooting Refrigerant Shortage Error Code Method of Error Refrigerant shortage detection I: Refrigerant shortage is detected by checking the input current value and the compressor Detection 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.
  • Page 80 Troubleshooting SiBE05-722ED Troubleshooting Be sure to turn off the power switch before connecting or disconnecting Caution connectors, or parts may be damaged. Check No.01 Refer to P.99 Any thermistor Replace the thermistor(s) disconnected? position. ∗ Discharge pipe thermistor ∗ Indoor or outdoor heat exchanger thermistor Check No.12 ∗...

  • Page 81: Low-Voltage Detection Or Over-Voltage Detection

    SiBE05-722ED Troubleshooting Low-voltage Detection or Over-voltage Detection Error Code Method of Error Low-voltage detection: An abnormal voltage drop is detected by the DC voltage detection circuit. Detection Over-voltage detection: An abnormal voltage rise is detected by the over-voltage detection circuit. Error Decision Low-voltage detection: Conditions...
  • Page 82 Troubleshooting SiBE05-722ED Troubleshooting Be sure to turn off the power switch before connecting or disconnecting Caution connectors, or parts may be damaged. Check the power supply voltage. Is the voltage fluctuation Correct the power supply. within ±10% from the rated value? Check the connection of the compressor harness.

  • Page 83: Signal Transmission Error (Between Indoor Unit And Outdoor Unit)

    SiBE05-722ED Troubleshooting Signal Transmission Error (Between Indoor Unit and Outdoor Unit) Error Code Method of Error The data received from the outdoor unit in signal transmission is checked whether it is normal. Detection Error Decision The data sent from the outdoor unit cannot be received normally, or the content of the data is Conditions abnormal.
  • Page 84 Troubleshooting SiBE05-722ED Troubleshooting Be sure to turn off the power switch before connecting or disconnecting Caution connectors, or parts may be damaged. Check No.11 Refer to P.100 Check the power supply voltage. Is the Is the voltage fluctuation voltage fluctuation Correct the power supply.

  • Page 85: Unspecified Voltage (Between Indoor Unit And Outdoor Unit)

    SiBE05-722ED Troubleshooting Unspecified Voltage (Between Indoor Unit and Outdoor Unit) Error Code Method of Error The supply power is detected for its requirements (pair type is different from multi type) by the indoor / outdoor transmission signal. Detection Error Decision The pair type and multi type are interconnected.

  • Page 86: Outdoor Unit Pcb Abnormality

    Troubleshooting SiBE05-722ED 4.10 Outdoor Unit PCB Abnormality Error Code Method of Error The system checks if the microprocessor is working in order. The system checks if the zero-cross signal comes in properly. Detection Error Decision The microprocessor program runs out of control. The zero-cross signal is not detected.

  • Page 87: Ol Activation (Compressor Overload)

    SiBE05-722ED Troubleshooting 4.11 OL Activation (Compressor Overload) Error Code Method of Error A compressor overload is detected through compressor OL. Detection Error Decision If the error repeats, the system is shut down. Reset condition: Continuous run for about 60 minutes without any other error Conditions Supposed Disconnection of discharge pipe thermistor...
  • Page 88 Troubleshooting SiBE05-722ED Troubleshooting Be sure to turn off the power switch before connecting or disconnecting Caution connectors, or parts may be damaged. Check No.01 Refer to P.99 Discharge pipe thermistor Insert the thermistor in disconnected? position. Check No.12 Refer to P.101 Check No.

  • Page 89: Compressor Lock

    SiBE05-722ED Troubleshooting 4.12 Compressor Lock Error Code Method of Error A compressor lock is detected by checking the compressor running condition through the position detection circuit. Detection Error Decision A compressor lock is detected by the current waveform generated when applying high- frequency voltage to the motor.

  • Page 90: Dc Fan Lock

    Troubleshooting SiBE05-722ED 4.13 DC Fan Lock Error Code Method of Error An error is determined with the high-voltage fan motor rotation speed detected by the Hall IC. Detection Error Decision 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.

  • Page 91: Input Overcurrent Detection

    SiBE05-722ED Troubleshooting 4.14 Input Overcurrent Detection Error Code Method of Error An input overcurrent is detected by checking the input current value with the compressor running. Detection Error Decision The current exceeds about 9.25 A for 2.5 seconds with the compressor running. (The upper limit of the current decreases when the outdoor temperature exceeds a certain Conditions level.)

  • Page 92: Four Way Valve Abnormality

    Troubleshooting SiBE05-722ED 4.15 Four Way Valve Abnormality Error Code Method of Error The room temperature thermistor and the indoor heat exchanger thermistor are checked if they function within their normal ranges in each operation mode. Detection Error Decision A following condition continues over 10 minutes after operating for 5 minutes. Conditions <Cooling / Dry>...
  • Page 93 SiBE05-722ED Troubleshooting Troubleshooting Be sure to turn off the power switch before connecting or disconnecting Caution connectors, or parts may be damaged. Check No.01 Four way valve coil Refer to P.99 Correct the four way valve disconnected (loose)? coil. Check No.13 Refer to P.102 Harness disconnected? Reconnect the harness.

  • Page 94: Discharge Pipe Temperature Control

    Troubleshooting SiBE05-722ED 4.16 Discharge Pipe Temperature Control Error Code Method of Error An error is determined with the temperature detected by the discharge pipe thermistor. Detection Error Decision If the temperature detected by the discharge pipe thermistor rises above A°C, the compressor stops.

  • Page 95: High Pressure Control In Cooling

    SiBE05-722ED Troubleshooting 4.17 High Pressure Control in Cooling Error Code Method of Error 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. Detection Error Decision The temperature sensed by the outdoor heat exchanger thermistor rises above about 65°C.

  • Page 96: Compressor System Sensor Abnormality

    Troubleshooting SiBE05-722ED 4.18 Compressor System Sensor Abnormality Error Code Method of Error The system checks the DC current before the compressor starts. Detection Error Decision The DC current before compressor start-up is out of the range 0.5 ~ 4.5 V (sensor output Conditions converted to voltage value) The DC voltage before compressor start-up is below 50 V.

  • Page 97: Position Sensor Abnormality

    SiBE05-722ED Troubleshooting 4.19 Position Sensor Abnormality Error Code Method of Error A compressor start-up failure is detected by checking the compressor running condition through the position detection circuit. Detection Error Decision If the error repeats, the system is shut down. Reset condition: Continuous run for about 11 minutes without any other error Conditions Supposed...
  • Page 98 Troubleshooting SiBE05-722ED Troubleshooting Be sure to turn off the power switch before connecting or disconnecting Caution connectors, or parts may be damaged. Check No.15 Turn off the power. Refer to P.103 Check the power supply voltage. Check No.18 Refer to P.106 Voltage as rated? Correct the power supply.

  • Page 99: Dc Voltage / Current Sensor Abnormality

    SiBE05-722ED Troubleshooting 4.20 DC Voltage / Current Sensor Abnormality Error Code Method of Error DC voltage or DC current sensor abnormality is identified based on the compressor running frequency and the input current. Detection Error Decision If the error repeats, the system is shut down. Reset condition: Continuous run for about 60 minutes without any other error Conditions Supposed...

  • Page 100: Thermistor Or Related Abnormality (Outdoor Unit)

    Troubleshooting SiBE05-722ED 4.21 Thermistor or Related Abnormality (Outdoor Unit) H9 , J3 , J6 , P4 Error Code Method of Error 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. Detection Error Decision The thermistor input voltage is 4.96 V and more, or 0.04 V and less with the power on.
  • Page 101 SiBE05-722ED 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, RXS35L2V1B Check No.01 Be sure to turn off the power switch before connecting or disconnecting Refer to P.99 Caution connectors, or parts may be damaged.

  • Page 102: Electrical Box Temperature Rise

    Troubleshooting SiBE05-722ED 4.22 Electrical Box Temperature Rise Error Code Method of Error An electrical box temperature rise is detected by checking the radiation fin thermistor with the compressor off. Detection Error Decision 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.
  • Page 103 SiBE05-722ED Troubleshooting Troubleshooting RK(X)S25/35E2V1B Be sure to turn off the power switch before connecting or disconnecting Caution connectors, or parts may be damaged. Check No.01 WARNING Turn off the power and turn it on Refer to P.99 again. To cool the electrical components, the outdoor fan starts when the radiation fin temperature rises above C˚C and stops when it...
  • Page 104 Troubleshooting SiBE05-722ED Troubleshooting RK(X)S25/35G2V1B, RK(X)S25/35G2V1B9, RXS25/35J2V1B, RXS25K3V1B, RXS35K2V1B, RXS35L2V1B Be sure to turn off the power switch before connecting or disconnecting Caution connectors, or parts may be damaged. Check No.17 WARNING Turn off the power and turn it on Refer to P.105 again.

  • Page 105: Radiation Fin Temperature Rise

    SiBE05-722ED Troubleshooting 4.23 Radiation Fin Temperature Rise Error Code Method of Error A radiation fin temperature rise is detected by checking the radiation fin thermistor with the compressor on. Detection Error Decision 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.
  • Page 106 Troubleshooting SiBE05-722ED Troubleshooting RK(X)S25/35E2V1B Be sure to turn off the power switch before connecting or disconnecting Caution connectors, or parts may be damaged. Check No.01 Turn off the power and turn it on Refer to P.99 again to start the system. Check No.17 Refer to P.105 Has the PCB been...
  • Page 107 SiBE05-722ED Troubleshooting Troubleshooting RK(X)S25/35G2V1B, RK(X)S25/35G2V1B9, RXS25/35J2V1B, RXS25K3V1B, RXS35K2V1B, RXS35L2V1B Be sure to turn off the power switch before connecting or disconnecting Caution connectors, or parts may be damaged. Check No.17 Turn off the power and turn it on again to start the system. Refer to P.105 Has the PCB been Check No.19...

  • Page 108: Output Overcurrent Detection

    Troubleshooting SiBE05-722ED 4.24 Output Overcurrent Detection Error Code Method of Error An output overcurrent is detected by checking the current that flows in the inverter DC section. Detection Error Decision A position signal error occurs while the compressor is running. A rotation speed error occurs while the compressor is running.
  • Page 109 SiBE05-722ED Troubleshooting Troubleshooting Be sure to turn off the power switch before connecting or disconnecting Caution connectors, or parts may be damaged. Check No.15 ∗ An output overcurrent may result from wrong internal wiring. If the system is interrupted by an output Refer to P.103 overcurrent after the wires have been disconnected and reconnected for part replacement, check the wiring again.

  • Page 110: Check

    Check SiBE05-722ED 5. Check Thermistor Resistance Check Check No.01 Disconnect the connectors of the thermistors from the PCB, and measure the resistance of each thermistor using multimeter. The data is for reference purpose only. Thermistor temperature (°C) Resistance (kΩ) –20 197.8 –15 148.2...

  • Page 111: Hall Ic Check

    SiBE05-722ED 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 Defective PCB Replace the PCB.

  • Page 112: Electronic Expansion Valve Check

    Check SiBE05-722ED Electronic Expansion Valve Check Check No.12 Conduct the followings to check the electronic expansion valve (EV). 1. Check if the EV connector is correctly connected to the PCB. 2. Turn the power off and on again, and check if the EV generates a latching sound. 3.

  • Page 113: Four Way Valve Performance Check

    SiBE05-722ED Check Four Way Valve Performance Check Check No.13 Turn the power off and then on again. ∗ Four way valve coil Start heating operation. Cooling / Dry : No continuity Heating : Continuity voltage at 220 - 240 Replace the outdoor unit VAC with compressor PCB.

  • Page 114: Inverter Analyzer Check

    Check SiBE05-722ED 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.).

  • Page 115: Rotation Pulse Check On The Outdoor Unit Pcb

    SiBE05-722ED 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.

  • Page 116: Installation Condition Check

    Check SiBE05-722ED RK(X)S25/35G2V1B9, RXS25/35J2V1B, RXS25K3V1B, RXS35K2V1B, RXS35L2V1B 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.

  • Page 117: Discharge Pressure Check

    SiBE05-722ED Check 5.10 Discharge Pressure Check Check No.18 Discharge pressure check High? Replace the compressor. Is the stop valve open? Open the stop valve. Is the connection pipe Replace the pipe installed at deformed? the site. Is the air filter or indoor / outdoor Replace the compressor.

  • Page 118: Main Circuit Short Check

    Check SiBE05-722ED 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 approximately 0 V before checking. Measure the resistance between the pins of the DB1 referring to the table below. If the resistance is ∞...
  • Page 119 SiBE05-722ED Check RK(X)S25/35G2V1B + ~ ~ – Multimeter (R19665) RK(X)S25/35G2V1B9, RXS25/35J2V1B, RXS25K3V1B, RXS35K2V1B, RXS35L2V1B Multimeter (R19666) Service Diagnosis...

  • Page 120: Power Module Check

    Check SiBE05-722ED 5.13 Power Module Check Check No.22 Note: Check to make sure that the voltage between (+) and (–) of the power module or the diode bridge is approximately 0 V before checking. Disconnect the compressor harness connector from the outdoor unit PCB. To disengage the connector, press the protrusion on the connector.
  • Page 121 SiBE05-722ED Check RK(X)S25/35G2V1B Diode bridge (R19946) RK(X)S25/35G2V1B9, RXS25/35J2V1B, RXS25K3V1B, RXS35K2V1B, RXS35L2V1B Diode bridge (R19947) Service Diagnosis...

  • Page 122: Part 7 Trial Operation And Field Settings

    SiBE05-722ED Part 7 Trial Operation and Field Settings 1. Pump Down Operation................112 2. Forced Cooling Operation ..............113 3. Trial Operation ..................114 4. Field Settings ..................115 4.1 When 2 Units are Installed in 1 Room..........115 4.2 Facility Setting Jumper (cooling at low outdoor temperature) ....116 4.3 Jumper and Switch Settings..............117 5.

  • Page 123: Pump Down Operation

    SiBE05-722ED 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 of the unit. Detail 1) Remove the valve caps from the liquid stop valve and the gas stop valve. 2) Carry out forced cooling operation.

  • Page 124: Forced Cooling Operation

    Forced Cooling Operation SiBE05-722ED 2. Forced Cooling Operation Item Forced Cooling Conditions 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.

  • Page 125: Trial Operation

    SiBE05-722ED Trial Operation 3. Trial Operation Outline 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. Trial operation should be carried out in either cooling or heating operation. Detail 1.

  • Page 126: Field Settings

    Field Settings SiBE05-722ED 4. Field Settings 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.

  • Page 127: Facility Setting Jumper (Cooling At Low Outdoor Temperature)

    SiBE05-722ED 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.

  • Page 128: Jumper And Switch Settings

    Field Settings SiBE05-722ED Jumper and Switch Settings Jumper Function Jumper When connected When cut (factory setting) Fan speed setting Fan speed setting; The fan stops. when compressor (on indoor unit PCB) Remote controller stops for thermostat setting OFF. (effective only in cooling operation) Power failure Auto-restart...

  • Page 129: Silicon Grease On Power Transistor / Diode Bridge

    SiBE05-722ED Silicon Grease on Power Transistor / Diode Bridge 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.

  • Page 130: Part 8 Appendix

    SiBE05-722ED Part 8 Appendix 1. Piping Diagrams..................120 1.1 Indoor Unit....................120 1.2 Outdoor Unit ..................121 2. Wiring Diagrams..................123 2.1 Indoor Unit....................123 2.2 Outdoor Unit ..................123 Appendix...

  • Page 131: Piping Diagrams

    SiBE05-722ED Piping Diagrams 1. Piping Diagrams Indoor Unit FLKS25/35BAVMB FLXS25/35BAVMB, FLXS35BAVMB9 INDOOR UNIT INDOOR UNIT ( 6.4CuT ) ( 6. 4CuT ) HEAT EXCHANGER HEAT EXCHANGER THERMISTOR FIELD PIPING ON HEAT THERMISTOR ( 6.4CuT ) EXCH. SIROCCO FAN FIELD PIPING ON HEAT ( 6.

  • Page 132: Outdoor Unit

    Piping Diagrams SiBE05-722ED Outdoor Unit 1.2.1 Cooling Only RKS25/35E2V1B OUTDOOR UNIT OUTDOOR TEMPERATURE HEAT EXCHANGER 7.0CuT THERMISTOR 7.0CuT HEAT EXCHANGER MOTOR OPERATED THERMISTOR VALVE 4.8CuT 6.4CuT 6.4CuT 4.8CuT MUFFLER MUFFLER WITH WITH FILTER FILTER PROPELLER FAN 9.5CuT MUFFLER WITH FILTER FOUR WAY FIELD PIPING VALVE...
  • Page 133 SiBE05-722ED Piping Diagrams 1.2.2 Heat Pump RXS25/35E2V1B OUTDOOR UNIT OUTDOOR TEMPERATURE HEAT EXCHANGER THERMISTOR 7.0CuT 7.0CuT HEAT EXCHANGER MOTOR OPERATED THERMISTOR VALVE 4.8CuT 6.4CuT 6.4CuT 4.8CuT MUFFLER MUFFLER WITH WITH FILTER FILTER PROPELLER FAN 9.5CuT MUFFLER WITH FILTER FOURWAY FIELD PIPING VALVE ( 6.4CuT ) ON:HEATING...

  • Page 134: Wiring Diagrams

    Wiring Diagrams SiBE05-722ED 2. Wiring Diagrams Indoor Unit FLK(X)S25/35BAVMB, FLXS35BAVMB9 PCB3 PCB1 PCB2 3.15A → H1P H2P H3P OUTDOOR GRN/YLW PCB4 FIELD WIRING. TRANSMISSION CAUTION CIRCUIT NOTE THAT OPERATION WILL RESTART AUTOMATICALLY IF SIGNAL THE MAIN POWER SUPPLY IS RECEIVER TURNED OFF AND THEN BACK INDOOR ON AGAIN.
  • Page 135 SiBE05-722ED Wiring Diagrams RK(X)S25/35G2V1B FIELD WIRING. MRM20 IPM1 indoor MRM10 C118 3.15A MR30 3.15A W V U PCB2 PCB1 MR30_A MR30_B MRCW outdoor NOTE 1. REFER TO THE NAMEPLATE FOR THE POWER REQUIREMENTS. IN CASE OF t˚ t˚ t˚ C5, C6, C119 : CAPACITOR HEAT PUMP DB1, DB2...
  • Page 136 Revision History Month / Year Version Revised contents 01 / 2007 SiBE05-722 First edition 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 01 / 2014 SiBE05-722ED Model addition: FLXS35BAVMB9, RXS35L2V1B...
  • Page 137 Improper installation can result in water or refrigerant leakage, electrical shock, fire or explosion. Use only those parts and accessories supplied or specified by Daikin. Ask a qualified installer or contractor to install those parts and accessories. Use of unauthorised parts and accessories or improper installation of parts and accessories can result in water or refrigerant leakage, electrical shock, fire or explosion.

This manual is also suitable for:

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