Fujitsu RSG09KMCDN Service Manual
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Fujitsu RSG09KMCDN Service Manual

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AIR CONDITIONER
Wall mounted type
INDOOR
RSG09KMCDN
RSG12KMCDN
RSG14KMCDN
OUTDOOR
ROG09KMCDN
SERVICE MANUAL
ROG12KMCDN
For Extra Cold Climate Area
ROG14KMCDN
SR_AS038EJ_02
2020.12.15

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Summary of Contents for Fujitsu RSG09KMCDN

  • Page 1 AIR CONDITIONER Wall mounted type SERVICE MANUAL For Extra Cold Climate Area INDOOR RSG09KMCDN RSG12KMCDN RSG14KMCDN OUTDOOR ROG09KMCDN ROG12KMCDN ROG14KMCDN SR_AS038EJ_02 2020.12.15...
  • Page 2 Notices: • Product specifications and design are subject to change without notice for future improvement. • For further details, please check with our authorized dealer.
  • Page 3 CONTENTS 1. GENERAL INFORMATION 2. TECHNICAL DATA AND PARTS LIST 3. TROUBLESHOOTING 4. CONTROL AND FUNCTIONS 5. FILED WORKING...
  • Page 5 1. GENERAL INFORMATION 2020.11.19 SR_CH01_AS038EJ_01...

  • Page 6: Table Of Contents

    CONTENTS 1. GENERAL INFORMATION 1. Specifications....................01-1 1-1. Indoor unit ........................01-1 1-2. Outdoor unit........................01-3 2. Dimensions....................01-4 2-1. Indoor unit ........................01-4 2-2. Outdoor unit........................01-6...

  • Page 7: Specifications

    1. Specifications 1-1. Indoor unit Wall mounted Type Inverter heat pump Model name RSG09KMCDN RSG12KMCDN RSG14KMCDN Power supply 230 V ~ 50 Hz Available voltage range 198—264 V 2.50 3.40 4.20 Rated Btu/h 8,500 11,600 14,300 Cooling 1.0—3.8 1.0—4.2 1.2—4.65 Min.—Max.
  • Page 8 Specifications for Lot10 Model name RSG09KMCDN RSG12KMCDN RSG14KMCDN Cooling Energy efficiency class Heating (Average) Cooling 2.5 (35 °C) 3.4 (35 °C) 4.2 (35 °C) Pdesign Heating (Average) 2.5 (-10 °C) 3.6 (-10 °C) 4.2 (-10 °C) SEER Cooling kWh/kWh SCOP...

  • Page 9: Outdoor Unit

    1-2. Outdoor unit Type Inverter heat pump Model name ROG09KMCDN ROG12KMCDN ROG14KMCDN Power supply 230 V ~ 50 Hz Available voltage range 198—264 V Starting current Cooling 1,770 2,210 2,450 Airflow rate Heating 1,313 1,335 2,330 Type × Q'ty Propeller fan × 1 Motor output Cooling Sound pressure level *1...

  • Page 10: Dimensions

    2. Dimensions 2-1. Indoor unit ¢ Models: RSG09KMCDN, RSG12KMCDN, and RSG14KMCDN Unit: mm (834) Outline of indoor unit for pipe inlet Ø65 for pipe inlet Ø65 - (01-4) - 2-1. Indoor unit 2. Dimensions...
  • Page 11  Installation space requirement Provide sufficient installation space for product safety. Unit: mm 70 or more 40 or more Wall hook bracket Outline of the indoor unit 107 or more 183 or more 1,500 or more The flare connection part should be installed outdoors.

  • Page 12: Outdoor Unit

    2-2. Outdoor unit ¢ Model: ROG09KMCDN Unit: mm 4-M10 hole Pitch of bolts for installation Top view Side view Front view Side view Airflow Drain port Ø42 Bottom view Side view (Valve part) - (01-6) - 2-2. Outdoor unit 2. Dimensions...
  • Page 13 ¢ Model: ROG12KMCDN Unit: mm 4-M10 hole Pitch of bolts for installation Top view Side view Front view Side view Airflow Drain port Ø42 Bottom view Side view (Valve part) - (01-7) - 2-2. Outdoor unit 2. Dimensions...
  • Page 14 ¢ Model: ROG14KMCDN Unit: mm 4-M10 hole Pitch of bolts for installation Side view Front view Side view Airflow Drain port Ø42 Bottom view Side view (Valve part) - (01-8) - 2-2. Outdoor unit 2. Dimensions...
  • Page 15 2. TECHNICAL DATA AND PARTS LIST 2020.11.19 SR_CH02_AS038EJ_01...
  • Page 16 CONTENTS 2. TECHNICAL DATA AND PARTS LIST 1. Precautions....................02-1 2. Indoor unit parts list..................02-2 2-1. Models: RSG09KMCDN, RSG12KMCDN, and RSG14KMCDN ........02-2 3. Outdoor unit parts list.................02-4 3-1. Model: ROG09KMCDN ....................02-4 3-2. Model: ROG12KMCDN ....................02-8 3-3. Model: ROG14KMCDN ....................02-12 4. Accessories ....................02-16 4-1.

  • Page 17: Precautions

    • Service parts information and design are subject to change without notice for product improve- ment. • For the latest information of the service parts, refer to our Service Portal. https://fujitsu-general.force.com/portal/ • Precise figure of the service parts listed in this manual may differ from the actual service parts. - (02-1) -...

  • Page 18: Indoor Unit Parts List

    2. Indoor unit parts list 2-1. Models: RSG09KMCDN, RSG12KMCDN, and RSG14KMCDN ¢ Exterior parts Item no. Part no. Part name Service part 9387480047 Bracket panel ♦ 9333951003 Louver spring P ♦ 9333608006 Bush ♦ 9387714043 Step motor holder assy ♦...
  • Page 19 ♦ — Box shield — — Control box — — PCB holder A — — Control cover — — Motor case — — Motor cover — - (02-3) - 2-1. Models: RSG09KMCDN, RSG12KMCDN, and RSG14KMCDN 2. Indoor unit parts list...

  • Page 20: Outdoor Unit Parts List

    3. Outdoor unit parts list 3-1. Model: ROG09KMCDN ¢ Exterior parts and Chassis - (02-4) - 3-1. Model: ROG09KMCDN 3. Outdoor unit parts list...
  • Page 21 Item no. Part no. Part name Service part 9322556028 Top panel assy ♦ 9377840011 Protective net assy ♦ 9322553201 Motor bracket assy ♦ 9322551313 Separator assy ♦ 9322552020 Cabinet right assy ♦ 9322570000 Switch cover assy ♦ 9901070013 Terminal ♦ 9709685686 Main PCB (Service) ♦...
  • Page 22 ¢ Compressor - (02-6) - 3-1. Model: ROG09KMCDN 3. Outdoor unit parts list...
  • Page 23 Item no. Part no. Part name Service part 9322431004 Compressor assy ♦ 9322445018 4-way valve assy ♦ 9970194023 Solenoid ♦ 9970095122 Expansion valve coil ♦ 9322463029 Pulse motor valve assy ♦ 9322474001 2-way valve assy ♦ 9322475008 3-way valve assy ♦...

  • Page 24: Model: Rog12Kmcdn

    3-2. Model: ROG12KMCDN ¢ Exterior parts and Chassis - (02-8) - 3-2. Model: ROG12KMCDN 3. Outdoor unit parts list...
  • Page 25 Item no. Part no. Part name Service part 9322556066 Top panel assy ♦ 9377854025 Protective net assy ♦ 9322552099 Cabinet right assy ♦ 9322570024 Switch cover assy ♦ 9323550032 Base assy ♦ 9901070013 Terminal ♦ 9709685693 Main PCB (Service) ♦ 9900850012 Thermistor (Outdoor temp.) ♦...
  • Page 26 ¢ Compressor - (02-10) - 3-2. Model: ROG12KMCDN 3. Outdoor unit parts list...
  • Page 27 Item no. Part no. Part name Service part 9322433008 Compressor assy ♦ 9322445018 4-way valve assy ♦ 9970194023 Solenoid ♦ 9970095122 Expansion valve coil ♦ 9322463005 Pulse motor valve assy ♦ 9322474001 2-way valve assy ♦ 9322475008 3-way valve assy ♦...

  • Page 28: Model: Rog14Kmcdn

    3-3. Model: ROG14KMCDN ¢ Exterior parts and chassis - (02-12) - 3-3. Model: ROG14KMCDN 3. Outdoor unit parts list...
  • Page 29 Item no. Part no. Part name Service part 9322556073 Top panel assy ♦ 9334053003 Protective net assy ♦ 9322552082 Cabinet right assy ♦ 9322570031 Switch cover assy ♦ 9901070013 Terminal ♦ 9709685709 Main PCB (Service) ♦ 9900850012 Thermistor (Outdoor temp.) ♦...
  • Page 30 ¢ Compressor - (02-14) - 3-3. Model: ROG14KMCDN 3. Outdoor unit parts list...
  • Page 31 Item no. Part no. Part name Service part 9810521002 Compressor ♦ 9970095122 Expansion valve coil ♦ 9322462015 Pulse motor valve assy ♦ 9970194023 Solenoid ♦ 9323294004 Valve assy ♦ 9970205002 4-way valve ♦ 9322791009 Suction pipe assy ♦ 9383949036 Discharge pipe assy ♦...

  • Page 32: Accessories

    4. Accessories 4-1. Indoor unit ¢ Models: RSG09KMCDN, RSG12KMCDN, and RSG14KMCDN Part name Exterior Q’ty Part name Exterior Q’ty Operating manual Tapping screw (large) Installation manual Tapping screw (small) Wall hook bracket Cloth tape Remote controller Filter holder Remote controller...

  • Page 33: Refrigerant System Diagrams

    5. Refrigerant system diagrams 5-1. Models: ROG09KMCDN and ROG12KMCDN Heat exchanger 3-way ( INDOOR ) valve 2-way Muffler valve Muffler 4-way valve Strainer Expansion valve Heat exchanger Strainer ( OUTDOOR ) Cooling Heating :Thermistor (Discharge temp.) :Thermistor (Outdoor temp.) :Thermistor (Heat exchanger out temp.) :Thermistor (Room temp.) :Thermistor (Pipe temp.) - (02-17) -...

  • Page 34: Model: Rog14Kmcdn

    5-2. Model: ROG14KMCDN Heat exchanger 3-way (INDOOR) valve 2-way Muffler valve Muffler Pressure switch Strainer 4-way valve Expansion valve Accumulator Heat exchanger Strainer (OUTDOOR) Cooling Heating : Thermistor (Compressor temperature) : Thermistor (Discharge temperature) : Thermistor (Outdoor temperature) : Thermistor (Heat exchanger out temperature) : Thermistor (Room temperature) : Thermistor (Pipe temperature) - (02-18) -...

  • Page 35: Wiring Diagrams

    6. Wiring diagrams 6-1. Indoor unit ¢ Models: RSG09KMCDN, RSG12KMCDN, and RSG14KMCDN - (02-19) - 6-1. Indoor unit 6. Wiring diagrams...

  • Page 36: Outdoor Unit

    6-2. Outdoor unit ¢ Models: ROG09KMCDN and ROG12KMCDN - (02-20) - 6-2. Outdoor unit 6. Wiring diagrams...
  • Page 37 ¢ Model: ROG14KMCDN - (02-21) - 6-2. Outdoor unit 6. Wiring diagrams...

  • Page 38: Pc Board Diagrams

    7. PC board diagrams 7-1. Models: RSG09KMCDN, RSG12KMCDN, and RSG14KMCDN CONTROL UNIT 09 model : EZ-020CHSE 12 model : EZ-020DHSE 14 model : EZ-020EHSE 2-WIRE REMOTE CONTROLLER UNIT ( OPTION ) UTY-TWRXZ2 CN301 UL1007 AWG22 CN300 REMOTE UL1007 AWG22 WHITE...

  • Page 39: Models: Rog09Kmcdn And Rog12Kmcdn

    7-2. Models: ROG09KMCDN and ROG12KMCDN INVERTER ASSEMBLY 09,12 models : EZ-020YHUE EMI FILTER KRFC-13 EMI FILTER EMI FILTER 2 TURNS KRFC-13 KRFC-13 UL3271 TO INDOOR UNIT 2 TURNS 1 TURN AWG16 COMPRESSOR W400 UL1015 UL3271 Winding Resistance AWG20 AWG16 W103 W401 BLACK WHITE...

  • Page 40: Model: Rog14Kmcdn

    7-3. Model: ROG14KMCDN INVERTER ASSEMBLY 14 model : EZ-0200HUE EMI FILTER KRFC-13 EMI FILTER EMI FILTER 2 TURNS KRFC-13 KRFC-13 UL3271 TO INDOOR UNIT 2 TURNS 1 TURN AWG16 COMPRESSOR W400 UL1015 UL3271 AWG20 AWG16 W103 W401 BLACK WHITE WHITE UL3271 UL1015 AWG16...
  • Page 41 3. TROUBLESHOOTING 2020.12.15 SR_CH03_AS038EJ_01...
  • Page 42 CONTENTS 3. TROUBLESHOOTING 1. Error code ....................03-1 1-1. Error code table (Indoor unit and wired remote controller)..........03-1 2. Troubleshooting with error code ...............03-2 2-1. E: 11. Serial communication error (Serial reverse transfer error) (Outdoor unit).....03-2 2-2. E: 11. Serial communication error (Serial forward transfer error) (Indoor unit) ....03-4 2-3.
  • Page 43 CONTENTS (continued) 5-2. Outdoor unit........................03-44...

  • Page 45: Error Code

    1. Error code 1-1. Error code table (Indoor unit and wired remote controller) The operation, timer, and economy indicators operate according to the error contents. For confirmation of the error contents, refer the flashing pattern as follows. Indoor unit display Wired remote Error contents...

  • Page 46: Troubleshooting With Error Code

    2. Troubleshooting with error code 2-1. E: 11. Serial communication error (Serial reverse transfer error) (Outdoor unit) Operation indicator 1 time flash Timer indicator 1 time flash Indicator Indoor unit Economy indicator Continuous flash Error code E: 11 Main PCB When the indoor unit cannot receive the serial signal from outdoor unit more than 2 minutes after power on, Detective actuator...
  • Page 47 Check point 4. Check serial signal (Reverse transfer signal) Check serial signal (Reverse transfer signal) GREEN WHITE BLACK WHITE BLACK • Check if indicated value swings between AC 90 V and AC 270 V at the outdoor unit terminal 1 —3.

  • Page 48: E: 11. Serial Communication Error (Serial Forward Transfer Error) (Indoor Unit)

    2-2. E: 11. Serial communication error (Serial forward transfer error) (Indoor unit) Operation indicator 1 time flash Timer indicator 1 time flash Indicator Indoor unit Economy indicator Continuous flash Error code E: 11 Main PCB Indoor unit When the outdoor unit cannot properly receive the serial Detective actuator Fan motor signal from indoor unit for 10 seconds or more.
  • Page 49 Check point 4. Check serial signal (Forward transfer signal) Check serial signal (Forward transfer signal) GREEN WHITE BLACK WHITE BLACK • Check if indicated value swings between AC 30 V and AC 130 V at outdoor unit terminal 2—3. • If it is abnormal, replace main PCB.

  • Page 50: E: 12. Wired Remote Controller Communication Error (Indoor Unit)

    2-3. E: 12. Wired remote controller communication error (Indoor unit) Operation indicator 1 time flash Timer indicator 2 time flash Indicator Indoor unit Economy indicator Continuous flash Error code E: 12 Indoor unit Main PCB When the indoor unit cannot receive the signal from Detective actuator Wired remote controller more than 1 minute during Wired remote control...

  • Page 51: E: 18. External Communication Error (Indoor Unit)

    2-4. E: 18. External communication error (Indoor unit) Operation indicator 1 time flash Timer indicator 8 time flash Indicator Indoor unit Economy indicator Continuous flash Error code E: 18 External After receiving a signal from the external input and Detective actuator Indoor unit communication output PCB, the same signal has not been received for...

  • Page 52: E: 22. Indoor Unit Capacity Error (Indoor Unit)

    2-5. E: 22. Indoor unit capacity error (Indoor unit) Operation indicator 2 time flash Timer indicator 2 time flash Indicator Indoor unit Economy indicator Continuous flash Error code E: 22 When the total capacity of the indoor units does not Detective actuator Indoor unit main PCB match outdoor unit capacity while 3 minutes after power...

  • Page 53: E: 23. Combination Error (Outdoor Unit)

    2-6. E: 23. Combination error (Outdoor unit) Operation indicator 2 time flash Timer indicator 3 time flash Indicator Indoor unit Economy indicator Continuous flash Error code E: 23 Detective actuator Indoor unit • When the outdoor unit type is multi type Forecast of cause Incorrect indoor unit is selected.

  • Page 54: E: 32. Indoor Unit Main Pcb Error (Indoor Unit)

    2-7. E: 32. Indoor unit main PCB error (Indoor unit) Operation indicator 3 time flash Timer indicator 2 time flash Indicator Indoor unit Economy indicator Continuous flash Error code E: 32 When power is on and there is some below case. Detective actuator Indoor unit main PCB...

  • Page 55: E: 35. Manual Auto Button Error (Indoor Unit)

    2-8. E: 35. MANUAL AUTO button error (Indoor unit) Operation indicator 3 time flash Timer indicator 5 time flash Indicator Indoor unit Economy indicator Continuous flash Error code E: 35 Indoor unit controller PCB When the MANUAL AUTO button becomes on for Detective actuator Indicator PCB consecutive 60 or more seconds.

  • Page 56: E: 41. Room Temperature Sensor Error (Indoor Unit)

    2-9. E: 41. Room temperature sensor error (Indoor unit) Operation indicator 4 time flash Timer indicator 1 time flash Indicator Indoor unit Economy indicator Continuous flash Error code E: 41 Indoor unit main PCB Room temperature thermistor is open or short is Detective actuator detected always.

  • Page 57: E: 42. Indoor Unit Heat Exchanger Sensor Error (Indoor Unit)

    2-10. E: 42. Indoor unit heat exchanger sensor error (Indoor unit) Operation indicator 4 time flash Timer indicator 2 time flash Indicator Indoor unit Economy indicator Continuous flash Error code E: 42 Indoor unit main PCB When heat exchanger temperature thermistor open or Detective actuator Heat exchanger temperature short circuit is detected.

  • Page 58: E: 51. Indoor Unit Fan Motor Error (Indoor Unit)

    2-11. E: 51. Indoor unit fan motor error (Indoor unit) Operation indicator 5 time flash Timer indicator 1 time flash Indicator Indoor unit Economy indicator Continuous flash Error code E: 51 main PCB When the condition that actual frequency of indoor fan is Detective actuator Indoor unit below 1/3 of target frequency is continued more than 56...

  • Page 59: E: 62. Outdoor Unit Main Pcb Error (Outdoor Unit)

    2-12. E: 62. Outdoor unit main PCB error (Outdoor unit) Operation indicator 6 time flash Timer indicator 2 time flash Indicator Indoor unit Economy indicator Continuous flash Error code E: 62 Access to EEPROM failed due to some cause after Detective actuator Outdoor unit Main PCB...

  • Page 60: E: 64. Pfc Circuit Error (Outdoor Unit)

    2-13. E: 64. PFC circuit error (Outdoor unit) Operation indicator 6 time flash Timer indicator 4 time flash Indicator Indoor unit Economy indicator Continuous flash Error code E: 64 • When inverter input DC voltage is higher than 415 V for over 3 seconds, the compressor stops. Detective actuator Outdoor unit Main PCB...

  • Page 61: E: 65. Ipm Error (Outdoor Unit)

    2-14. E: 65. IPM error (Outdoor unit) Operation indicator 6 time flash Timer indicator 5 time flash Indicator Indoor unit Economy indicator Continuous flash Error code E: 65 Main PCB 1. When more than normal operating current to IPM in main PCB flows, the compressor stops.
  • Page 62 Check point 4. Check compressor Check compressor. (Refer to inverter compressor in "Service parts information".) ↓ Check point 5. Replace main PCB If Check point 1 to 4 do not improve the symptom, change main PCB. ↓ - (03-18) - 2-14.

  • Page 63: E: 71. Discharge Thermistor Error (Outdoor Unit)

    2-15. E: 71. Discharge thermistor error (Outdoor unit) Operation indicator 7 time flash Timer indicator 1 time flash Indicator Indoor unit Economy indicator Continuous flash Error code E: 71 Outdoor unit main PCB When discharge pipe temperature thermistor open or Detective actuator short circuit is detected at power on or while running the Discharge pipe temperature...

  • Page 64: E: 73. Outdoor Unit Heat Exchanger Thermistor Error (Outdoor Unit)

    2-16. E: 73. Outdoor unit heat exchanger thermistor error (Outdoor unit) Operation indicator 7 time flash Timer indicator 3 time flash Indicator Indoor unit Economy indicator Continuous flash Error code E: 73 Outdoor unit main PCB When heat exchanger temperature thermistor open or Detective actuator short circuit is detected at power on or while running the Heat exchanger temperature...

  • Page 65: E: 74. Outdoor Temperature Thermistor Error (Outdoor Unit)

    2-17. E: 74. Outdoor temperature thermistor error (Outdoor unit) Operation indicator 7 time flash Timer indicator 4 time flash Indicator Indoor unit Economy indicator Continuous flash Error code E: 74 Outdoor unit main PCB When outdoor temperature thermistor open or short Detective actuator circuit is detected at power on or while running the Outdoor temperature thermistor...

  • Page 66: E: 84. Current Sensor Error (Outdoor Unit)

    2-18. E: 84. Current sensor error (Outdoor unit) Operation indicator 8 time flash Timer indicator 4 time flash Indicator Indoor unit Economy indicator Continuous flash Error code E: 84 When input current sensor has detected 0 A, while inverter compressor is operating at higher than 56 rps, Detective actuator Outdoor unit main PCB...

  • Page 67: E: 94. Trip Detection (Outdoor Unit)

    2-19. E: 94. Trip detection (Outdoor unit) Operation indicator 9 time flash Timer indicator 4 time flash Indicator Indoor unit Economy indicator Continuous flash Error code E: 94 Main PCB Protection stop by over-current generation after inverter compressor start processing completed generated consecutively 10 times.

  • Page 68: E: 95. Compressor Motor Control Error (Outdoor Unit)

    2-20. E: 95. Compressor motor control error (Outdoor unit) Operation indicator 9 time flash Timer indicator 5 time flash Indicator Indoor unit Economy indicator Continuous flash Error code E: 95 Main PCB 1. When running the compressor, if the detected rotor location is out of phase with actual rotor location more than 90°, the compressor stops.

  • Page 69: E: 97. Outdoor Unit Fan Motor Error (Outdoor Unit)

    2-21. E: 97. Outdoor unit fan motor error (Outdoor unit) Operation indicator 9 time flash Timer indicator 7 time flash Indicator Indoor unit Economy indicator Continuous flash Error code E: 97 Main PCB 1. When outdoor fan rotation speed is less than 100 rpm in 20 seconds after fan motor starts, fan motor stops.

  • Page 70: E: 99. 4-Way Valve Error (Outdoor Unit)

    2-22. E: 99. 4-way valve error (Outdoor unit) Operation indicator 9 time flash Timer indicator 9 time flash Indicator Indoor unit Economy indicator Continuous flash Error code E: 99 Indoor unit main PCB When the indoor heat exchanger temperature is compared with the room temperature, and either Heat exchanger temperature following condition is detected continuously two times,...
  • Page 71 Check point 3. Check the solenoid coil and 4-way valve NOTE: Refer solenoid coil and 4-way valve in "Service parts information" on page 03-37. • Solenoid coil Remove P60 from PCB and check the resistance value of coil. Resistance value is 1.88 kΩ — 2.29 kΩ...

  • Page 72: E: A1. Discharge Temperature Error (Outdoor Unit)

    2-23. E: A1. Discharge temperature error (Outdoor unit) Operation indicator 10 time flash Timer indicator 1 time flash Indicator Indoor unit Economy indicator Continuous flash Error code E: A1 Outdoor unit main PCB Protection stop by discharge temperature ≥ 110 °C Detective actuator during compressor operation generated 2 times within Discharge temperature thermistor...
  • Page 73 Check point 5. Check the refrigerant amount Check the refrigerant leakage. ↓ Check point 6. Replace main PCB If check point 1 to 5 do not improve the symptom, replace the main PCB. ↓ - (03-29) - 2-23. E: A1. Discharge temperature error (Outdoor unit) 2.

  • Page 74: Troubleshooting Without Error Code

    3. Troubleshooting without error code 3-1. Indoor unit—No power Power supply failure Forecast of cause External cause Electrical components defective Check point 1. Check installation condition • Isn’t the breaker down? • Check loose or removed connection cable. -> If abnormal condition is found, correct it by referring to the installation manual or the “DESIGN & TECHNICAL MANUAL”.

  • Page 75: Outdoor Unit-No Power

    3-2. Outdoor unit—No power Power supply failure Forecast of cause External cause Electrical components defective Check point 1. Check installation condition • Is the circuit breaker on or off? • Check loose or removed connection cable. → If abnormal condition is found, correct it by referring to the installation manual or the “DESIGN & TECHNICAL MANUAL”.

  • Page 76: No Operation (Power Is On)

    3-3. No operation (Power is on) Setting/ Connection failure Forecast of cause External cause Electrical components defective Check point 1. Check indoor and outdoor installation condition • Indoor unit: – Check incorrect wiring between indoor unit and remote controller. – Check if there is an open cable connection.

  • Page 77: No Cooling/No Heating

    3-4. No cooling/No heating Indoor unit error Outdoor unit error Forecast of cause Effect by surrounding environment Connection pipe/Connection wire failure Refrigeration cycle failure Check point 1. Check Indoor unit • Does Indoor unit fan run in the HIGH mode? •...
  • Page 78 NOTES: • Strainer normally does not have temperature difference between inlet and outlet as shown be- low. Pipe (In) Pipe (Out) • If there is a difference like shown below, there is a possibility of inside clogged. In this case, re- place the strainer.

  • Page 79: Abnormal Noise

    3-5. Abnormal noise Abnormal installation (indoor unit/outdoor unit) Forecast of cause Fan failure (indoor unit/outdoor unit) Compressor failure (outdoor) Diagnosis method when abnormal noise is occurred Abnormal noise is coming from Outdoor Abnormal noise is coming from Indoor unit. unit. (Check and correct followings) (Check and correct followings) ↓...

  • Page 80: Water Leaking

    3-6. Water leaking Erroneous installation Forecast of cause Drain hose failure Diagnosis method when water is spitting Diagnosis method when water leak occurs • Is main unit installed in stable condi- tion? Is the filter clogged? • Is main unit broken or deformed at the time of transportation or maintenance? ↓...

  • Page 81: Service Parts Information

    4. Service parts information 4-1. Compressor Diagnosis method of compressor (If outdoor unit LED displays error, refer to troubleshooting) Does not start up Stops soon after starting up Abnormal noise ↓ ↓ ↓ Check if vibration noise by Is there open or loose con- Is there open or loose con- loose bolt or contact noise of nection cable?

  • Page 82: Inverter Compressor

    4-2. Inverter compressor ¢ Models: ROG09KMCDN, ROG12KMCDN, and ROG14KMCDN Check point 1. Check connection • Check terminal connection of compressor (loose or incorrect wiring) T(W) S(V) (BLACK) (WHITE) Main PCB R(U) (RED) • Check terminal connection of main PCB (loose or incorrect wiring) Main PCB W400(U) W401(V) W402(W)

  • Page 83: Outdoor Unit Electronic Expansion Valve (Eev)

    4-3. Outdoor unit Electronic Expansion Valve (EEV) ¢ Models: ROG09KMCDN, ROG12KMCDN, and ROG14KMCDN Check point 1. Check connections Check connection of connector. (Loose connector or open cable) NOTE: For details of wiring diagram, refer to "Wiring diagrams" in Chapter 2. TECHNICAL DATA AND PARTS LIST on page 02-19.
  • Page 84 Check point 6. Check strainer • Strainer normally does not have temperature difference between inlet and outlet as shown be- low. Pipe (In) Pipe (Out) • If there is a difference like shown below, there is a possibility of inside clogged. In this case, replace the strainer.

  • Page 85: Indoor Unit Fan Motor

    4-4. Indoor unit fan motor ¢ Models: RSG09KMCDN, RSG12KMCDN, and RSG14KMCDN Check point 1. Check rotation of fan Rotate the fan by hand when operation is off. (Check if fan is caught, dropped off or locked motor) → If fan or bearing is abnormal, replace it.

  • Page 86: Outdoor Unit Fan Motor

    4-5. Outdoor unit fan motor ¢ Models: ROG09KMCDN, ROG12KMCDN, and ROG14KMCDN Check point 1. Check rotation of fan Rotate the fan by hand when operation is off. (Check if fan is caught, dropped off or locked motor) → If fan or bearing is abnormal, replace it. Check point 2.

  • Page 87: Thermistor Resistance Values

    5. Thermistor resistance values 5-1. Indoor unit ¢ Room temperature thermistor Temperature (°C) Resistance (kΩ) Voltage (V) -10.0 58.25 0.73 -5.0 44.03 0.93 33.62 1.15 25.93 1.39 10.0 20.18 1.66 15.0 15.84 1.94 20.0 12.54 2.22 25.0 10.00 2.50 30.0 8.04 2.77 35.0...
  • Page 88 5-2. Outdoor unit ¢ Discharge temperature thermistor Temperature (°C) Resistance (kΩ) Voltage (V) -30.0 984.49 0.03 -25.0 709.67 0.05 -20.0 518.22 0.06 -15.0 383.06 0.09 -10.0 286.42 0.11 -5.0 216.49 0.15 165.33 0.19 127.48 0.25 10.0 99.21 0.31 15.0 77.88 0.39 20.0 61.64...
  • Page 89 ¢ Heat exchanger temperature thermistor Temperature (°C) Resistance (kΩ) Voltage (V) -30.0 95.57 0.24 -25.0 68.89 0.32 -20.0 50.31 0.43 -15.0 37.19 0.57 -10.0 27.81 0.73 -5.0 21.02 0.92 16.05 1.14 12.38 1.39 10.0 9.63 1.65 15.0 7.56 1.93 20.0 5.98 2.21 25.0...
  • Page 90 - (03-46) - 5-2. Outdoor unit 5. Thermistor resistance values...
  • Page 91 4. CONTROL AND FUNCTIONS 2020.12.15 SR_CH04_AS038EJ_01...
  • Page 92 CONTENTS 4. CONTROL AND FUNCTIONS 1. Compressor frequency control..............04-1 1-1. Cooling operation ......................04-1 1-2. Heating operation ......................04-3 1-3. Dry operation ........................04-4 1-4. Compressor frequency at normal start-up ..............04-5 1-5. Compressor frequency limitation by outdoor temperature ..........04-6 2. Auto changeover operation................04-8 3.
  • Page 93 CONTENTS (continued) 8-8. High temperature and high pressure release control ............04-32...

  • Page 95: Compressor Frequency Control

    • Compressor frequency range Model name Minimum frequency Maximum frequency RSG09KMCDN 8 rps 63 rps RSG12KMCDN RSG14KMCDN 10 rps...
  • Page 96 Unit: rps Outdoor Indoor unit fan mode Model name temperature HIGH QUIET zone A zone B zone C zone RSG09KMCDN D zone E zone F zone A zone B zone C zone RSG12KMCDN D zone E zone F zone A zone...

  • Page 97: Heating Operation

    • Compressor frequency range Unit: rps Model name Minimum frequency Maximum frequency RSG09KMCDN RSG12KMCDN RSG14KMCDN • Limit of maximum speed based on outdoor temperature In heating operation, maximum frequency is defined by outdoor temperature and fan mode. Outdoor...

  • Page 98: Dry Operation

    Zone is defined by set temperature and room temperature. • Compressor frequency range Unit: rps Model name Outdoor temperature zone Operating frequency X zone RSG09KMCDN J zone Y zone X zone RSG12KMCDN J zone Y zone X zone...

  • Page 99: Compressor Frequency At Normal Start-Up

    1-4. Compressor frequency at normal start-up ¢ Models: ROG09KMCDN and ROG12KMCDN Compressor frequency soon after starting is controlled as below. Frequency V Frequency IV Frequency III Frequency II Frequency I Time 1 Time 2 Time 3 Time 4 Time 5 Frequency (rps) Time (sec) ¢...

  • Page 100: Compressor Frequency Limitation By Outdoor Temperature

    1-5. Compressor frequency limitation by outdoor temperature The minimum compressor frequency is limited by outdoor temperature as below. • Cooling/Dry mode F zone 38°C E zone 19°C D zone 10°C C zone 0°C B zone -10°C A zone Limitation of compressor Model name Outdoor temperature zone frequency...
  • Page 101 • Heating mode F zone 19°C E zone 5°C D zone 0°C C zone -15°C B zone -25°C A zone Limitation of compressor Model name Outdoor temperature zone frequency A zone 45 rps B zone 25 rps C zone 17 rps ROG09KMCDN D zone 10 rps...

  • Page 102: Auto Changeover Operation

    2. Auto changeover operation When the air conditioner is set to AUTO mode by remote controller, operation starts in the optimum mode from among heating, cooling, dry and monitoring modes. During operation, the optimum mode is automatically switched in accordance with temperature changes. The temperature can be set be- tween 18°C and 30°C in 1.0°C steps.
  • Page 103 Operation flow chart Start Ts: Setting temperarure Monitor mode Room temp. > Ts+2°C? Room temp. < Ts-2°C? Middle zone Auto change over is second or more? Operation mode before the monitor mode is cooling mode? Operation mode of Heating operation Cooling operation outdoor unit: Cooling? Thermostat remains...

  • Page 104: Fan Control

    3. Fan control Tr: Room temperature Ts: Setting temperature 3-1. Indoor fan control ¢ Fan speed Indoor fan speed is defined as below. Speed (rpm) Operation mode Fan mode RSG09KMCDN RSG12KMCDN RSG14KMCDN POWERFUL 1,310 1,340 1,400 HIGH 1,240 1,270 1,330...
  • Page 105 ¢ Dry operation During dry operation, fan speed setting can not be changed as shown in “Fan speed” above. ¢ Heating operation Switch the airflow AUTO, and the indoor fan motor will run according to a room temperature, as be- low.
  • Page 106 • Powerful operation Indoor heat exchanger temperature rises Indoor heat exchanger POWERFUL temperature drops 42°C 37°C HIGH 39°C 34°C 37°C 32°C Cool air prevention 30°C 28°C S-LOW 7 minutes later: Indoor heat exchanger temperature rises Indoor heat exchanger POWERFUL temperature drops 42°C 37°C HIGH...

  • Page 107: Outdoor Fan Control

    3-2. Outdoor fan control ¢ Outdoor fan motor This outdoor unit has a DC fan motor. (Control method is different between AC and DC motors.) ¢ Fan speed  Model: ROG09KMCDN Fan speed is defined by outdoor temperature and compressor frequency. •...
  • Page 108  Model: ROG12KMCDN Fan speed is defined by outdoor temperature and compressor frequency. • Outside air temperature zone selection Outside air Outside air temperature rises temperature drops Y zone 21°C 19°C Z zone 12°C 10°C F zone 2°C 0°C G zone Unit: rpm Cooling Cooling or dry at low outdoor temp.
  • Page 109  Model: ROG14KMCDN Fan speed is defined by outdoor temperature and compressor frequency. • Outside air temperature zone selection Outside air Outside air temperature rises temperature drops Y zone 21°C 19°C Z zone 12°C 10°C F zone 2°C 0°C G zone Unit: rpm Cooling Cooling or dry at low outdoor temp.

  • Page 110: Louver Control

    4. Louver control 4-1. Vertical airflow direction louver control Each time the button is pressed, the air direction range will change as below: Side view • Remote controller display is not changed. • Vertical airflow direction is set automatically as shown, in accordance with the type of operation selected.

  • Page 111: Swing Operation

    4-3. Swing operation • To select vertical airflow swing operation When the swing signal is received, the vertical airflow direction louver starts to swing. – Swinging range • Cooling mode/dry mode/fan mode (1 to 3): 1 ↔ 4 • Heating mode/fan mode (4 to 6): 3 ↔ 6 –...

  • Page 112: Timer Operation Control

    5. Timer operation control 5-1. Wireless remote control On/Off timer Program timer Sleep timer Weekly timer ○ ○ ○ ○ ¢ On/Off timer • Off timer: When the clock reaches the set timer, the air conditioner will be turned off. Operation mode Stop mode Set time of timer...
  • Page 113 ¢ Sleep timer If the sleep timer is set, the room temperature is monitored and the operation is stopped auto- matically. If the operation mode or the set temperature is change after the sleep timer is set, the operation is continued according to the changed setting of the sleep timer from that time on. •...

  • Page 114: Wired Remote Control

    5-2. Wired remote control Temperature set On/Off timer Program timer Sleep timer Weekly timer back timer ○ ○ ○ ○ ○ ¢ On/Off timer • Off timer: When the clock reaches the set timer, the air conditioner will be turned off. Operation mode Stop mode Set time of timer...
  • Page 115 ¢ Sleep timer If the sleep timer is set, the room temperature is monitored and the operation is stopped auto- matically. If the operation mode or the set temperature is change after the sleep timer is set, the operation is continued according to the changed setting of the sleep timer from that time on. •...
  • Page 116 ¢ Temperature set back timer • The SET BACK timer only changes the set temperature for 7 days, it cannot be used to start or stop air conditioner operation. • The SET BACK timer can be set to operate up to two times per day but only one temperature setting can be used.

  • Page 117: Defrost Operation Control

    6. Defrost operation control Tn: Outdoor unit heat exchanger temperature Ta: Outdoor temperature Tn10: Temperature at 10 minutes after compressor start Tnb: Temperature before 5 minutes Triggering condition • The defrost operation starts when outdoor unit heat exchanger temperature sensor detects the temperature lower than the values shown below.

  • Page 118: Defrost Operation In Heating Operation Stopped

    6-1. Defrost operation in heating operation stopped If the outdoor unit is frosted when stopping the heating operation, it stops after performing the auto- matic defrosting operation. In this time, if the indoor unit operation lamp flashes slowly (6 sec on/2 sec off), the outdoor unit al- low the heat exchanger to defrost, and then stop.

  • Page 119: Various Control

    7. Various control 7-1. Auto restart When the power was interrupted by a power failure etc. during operation, the operation contents at that time are memorized and when the power is recovered, operation is automatically started with the memorized operation contents. Operation contents memorized when the power is interrupted Operation mode Setting temperature...

  • Page 120: Forced Cooling Operation

    7-3. Forced cooling operation The outdoor unit may not operate depending on the room temperature. When FORCED COOLING OPERATION button is pressed more than 10 seconds, forced cooling operation starts as shown in the table below. Operation mode Cooling Fan mode HIGH Timer mode Continuous (no timer setting available)

  • Page 121: Powerful Operation

    7-6. POWERFUL operation The POWERFUL operation starts by pressing POWERFUL button on the remote controller. The indoor unit and outdoor unit operate at maximum power as shown in the table below. Compressor frequency Maximum Fan mode POWERFUL Cooling Vertical airflow direction louver setting Heating Release condition:...

  • Page 122: Electronic Expansion Valve Control

    7-9. Electronic expansion valve control The most proper opening of the electronic expansion valve is calculated and controlled under the present operating condition based on the table below. Operation mode Pulse range Cooling/dry mode Between 52 and 480 pulses Heating mode NOTE: At the time of supplying the power to the outdoor unit, the initialization of the electronic ex- pansion valve is operated (528 pulses are input to the closing direction).

  • Page 123: Various Protections

    8. Various protections 8-1. Discharge gas temperature over-rise prevention control The discharge gas temperature sensor (discharge thermistor: outdoor unit side) detects the dis- charge gas temperature. • When the discharge temperature becomes higher than the trigger condition, the compressor fre- quency is decreased as the table below, and it continues to decrease until the discharge tempera- ture becomes lower than the trigger condition.

  • Page 124: Current Release Control

    8-3. Current release control The compressor frequency is controlled so that the outdoor unit input current does not exceeds cur- rent limit value set according to the outdoor temperature. The compressor frequency returns according to the operation mode, when the current becomes low- er than the release value.

  • Page 125: Cooling Pressure Over-Rise Protection

    8-4. Cooling pressure over-rise protection When the outdoor unit heat exchanger temperature reaches trigger condition below, the compressor is stopped and trouble display is performed. Trigger condition 65°C 8-5. Compressor temperature protection When the compressor temperature sensor detects higher than the trigger condition below, the com- pressor is stopped.
  • Page 126 8-8. High temperature and high pressure release control The compressor is controlled as follows. ¢ Models: ROG09KMCDN, ROG12KMCDN, and ROG14KMCDN Indoor unit heat exchanger Indoor unit heat exchanger temperature rises temperature drops 63°C Zone A 55°C 53°C Zone B 50°C Zone C Zone D Stable zone...
  • Page 127 5. FILED WORKING 2020.12.15 SR_CH05_AS038EJ_01...
  • Page 128 CONTENTS 5. FILED WORKING 1. Function settings ..................05-1 1-1. Function settings by using remote controller ..............05-1 1-2. Custom code setting for wireless remote controller ............05-8...
  • Page 129 1. Function settings To adjust the functions of this product according to the installation environment, various types of function settings are available. NOTE: Incorrect settings can cause a product malfunction. 1-1. Function settings by using remote controller Some function settings can be changed on the remote controller. After confirming the setting proce- dure and the content of each function setting, select appropriate functions for your installation envi- ronment.
  • Page 130 NOTES: • The air conditioner custom code is set to prior to shipment. • If you do not know the air conditioner custom code setting, try each of the custom codes ( → → → ) until you find the code that operates the air conditioner. - (05-2) - 1-1.
  • Page 131 ¢ Contents of function setting Each function setting listed in this section is adjustable in accordance with the installation environ- ment. NOTE: Setting will not be changed if invalid numbers or setting values are selected.  Function setting list Function no. Functions Remote controller address setting Filter sign...
  • Page 132 2) Filter sign Select appropriate intervals for displaying the filter sign on the indoor unit according to the estimated amount of dust in the air of the room. If the indication is not required, select "No indication" (03). Function number Setting value Setting description Factory setting...
  • Page 133 4) Room temperature control for wired remote controller sensor Depending on the installed environment, correction of the wire remote temperature sensor may be required. Select the appropriate control setting according to the installed environment. To change this setting, set Function 42 to Both “01”. Ensure that the Thermo Sensor icon is displayed on the remote controller screen.
  • Page 134 7) Cold air prevention This setting is to disable the cold air prevention function during heating operation. When disabled, the fan setting will always follow the setting on the remote controller. (Excluding defrost mode) Function number Setting value Setting description Factory setting Enable ♦...
  • Page 135 11) Indoor unit fan control for energy saving for cooling Enables or disables the power-saving function by controlling the indoor unit fan rotation when the outdoor unit is stopped during cooling operation. Function number Setting value Setting description Factory setting Disable Enable Remote controller...
  • Page 136 1-2. Custom code setting for wireless remote controller To interconnect the air conditioner and the wireless remote controller, assignment of the custom code for the wireless remote controller is required. NOTE: Air conditioner cannot receive a signal if the air conditioner has not been set for the custom code.

This manual is also suitable for:

Rsg12kmcdnRsg14kmcdnRog09kmcdnRog12kmcdnRog14kmcdn

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