Acond 12FSFI-A6-1511 Service Manual
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Acond 12FSFI-A6-1511 Service Manual

Fairwind 3d inverter series
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FAIRWIND 3D Inverter Series
Service Manual 2015
12FSFI-A6-1511

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Summary of Contents for Acond 12FSFI-A6-1511

  • Page 1 FAIRWIND 3D Inverter Series Service Manual 2015 12FSFI-A6-1511...

  • Page 2: Table Of Contents

    CONTENTS 1. Precaution ..............................3   1.1 Safety Precaution ........................3  1.2 Warning ............................3  2. Function ................................ 6   3. Dimension ..............................7   3.1 Indoor Unit ........................... 7  3.2 Outdoor Unit ..........................10  4. Refrigerant Cycle Diagram ........................12   5 Installation Details ............................

  • Page 3: Precaution

    installing the product. Sharp edges could cause injury, be especially 1. Precaution careful of the case edges and the fins on the condenser and evaporator. 1.1 Safety Precaution  For installation, always contact the dealer or an authorized service center. ...
  • Page 4 from product, turn the breaker off or water is drained away properly. A bad connection may cause water leakage. disconnect the power supply cable. There is risk of electric shock or fire.  Keep level even when installing the  Stop operation and close the window product.
  • Page 5 through air inlet or outlet while the product types of batteries. There is risk of fire or explosion. is operated.   Do not drink the water drained from Do not recharge or disassemble the the product. batteries. Do not dispose of batteries in a ...

  • Page 6: Function

    2. Function Model Names of Indoor/Outdoor Units Capacity Indoor units Outdoor units MS12FU-09HRDN1-QRD0GW MOBA30-09HFN1-QRD0GW Inverter MS12FU-12HRDN1-QRD0GW MOBA30-12HFN1-QRD0GW 2 ways piping connection Filter Killer Of Formaldehyde Louver Position Memory Function Ionizer(O) Refrigerant Leakage Detect Silver Ico Filter(O) Self-diag. Function Vitamin C Filter(O) ydrophilic Aluminum Fin 3M HAM Filter(O) Anti-rust Cabinet...

  • Page 7: Dimension

    3. Dimension 3.1 Indoor Unit Model MS12FU-09HRDN1-QRD0GW MS12FU-12HRDN1-QRD0GW...
  • Page 8 For MS12FU-09HRDN1-QRD0GW ，...
  • Page 9 For MS12FU-12HRDN1-QRD0GW，...

  • Page 10: Outdoor Unit

    3.2 Outdoor Unit More than 30cm More than 60cm (Service space More than 30cm More than 60cm More than 200cm...
  • Page 11 For MOBA30-09HFN1-QRD0GW, MOBA30-12HFN1-QRD0GW， 779 W3 487 W1 300 D 770 W 70 W2 25 B1 61.5 A2 12 A1...

  • Page 12: Refrigerant Cycle Diagram

    4. Refrigerant Cycle Diagram INDOOR OUTDOOR CHECK VALVE LIQUID SIDE (Heating Model only) 2-WAY VALVE T3 Condenser temp. sensor CAPILIARY TUBE HEAT EXCHANGE HEAT (EVAPORATOR) T4 Ambient T1 Room temp. EXCHANGE temp. sensor sensor (CONDENSER) T2 Evaporator temp. sensor GAS SIDE 4-WAY VALVE 3-WAY VALVE Accumulator...

  • Page 13: Installation Details

    5 Installation Details 5.1 Wrench torque sheet for installation Outside diameter Torque Additional tightening torque inch N.cm N.cm Ф6.35 1500(153kgf.cm) 1600(163kgf.cm) Ф9.52 2500(255kgf.cm) 2600(265kgf.cm) Ф12.7 3500(357kgf.cm) 3600(367kgf.cm) Ф15.9 4500(459kgf.cm) 4700(479kgf.cm) Ф19 6500(663kgf.cm) 6700(683kgf.cm) 5.2 Connecting the cables The power cord of connect should be selected according to the following specifications sheet. Rated current of appliance Nominal cross-sectional area (mm²) >3 and ≤6...

  • Page 14: Pipe Length And The Elevation

    5.3 Pipe length and the elevation The pipe length and refrigerant amount: Standard Max. Max. Additional Pipe size Model length Elevation Length refrigerant Liquid B (m) A (m) (g/m) MS12FU-09HRDN1-QRD0GW+ 3/8’’ 1/4’’ MOBA30-09HFN1-QRD0GW (Ф9.52) (Ф6.35) MS12FU-12HRDN1-QRD0GW + 3/8’’ 1/4’’ MOBA30-12HFN1-QRD0GW (Ф9.52) (Ф6.35) Caution:...

  • Page 15: Installation For The First Time

    4) Fully open the handle Lo of the manifold 5.4 Installation for the first time valve. Air and moisture in the refrigerant system have 5) Operate the vacuum pump to evacuate. undesirable effects as below: 6) Make evacuation for 30 minutes and check ●...

  • Page 16: Adding The Refrigerant After Running The System For Many Years

    charge set. Purge the air by loosening the flare and press the check valve on the charge set to nut on the 2-way valve approximately 45’ for 3 purge the air (be careful of the liquid seconds then closing it for 1 minute; repeat 3 refrigerant).

  • Page 17: Re-Installation While The Indoor Unit Need To Be Repaired

    scale and record the weight. 4). Set the 2-way valve to the close position. 4) Operate the air conditioner at the cooling 5). Operate the air conditioner at the cooling cycle mode. and stop it when the gauge indicates 0.1MPa. 5) Open the valves (Low side) on the charge set 6).

  • Page 18: Re-Installation While The Outdoor Unit Need To Be Repaired

    cylinder, and set the 2-way and 3-way valves to the open position Be sure to use a hexagonal wrench to operate the valve stems. 7). Mount the valve stems nuts and the service port cap Be sure to use a torque wrench to tighten the service port cap to a torque 18N.m.
  • Page 19 Be sure to check for gas leakage...

  • Page 20: Operation Characteristics

    6. Operation Characteristics Temperature Cooling operation Heating operation Drying operation Mode Room temperature ≥17℃ ≤30℃ ＞10℃ 0℃～50℃ -15℃～50℃ Outdoor temperature -15℃～30℃ 0℃～50℃ (For the models with low temperature cooling system) CAUTION: 1. If the air conditioner is used beyond the above conditions, certain safety protection features may come into operation and cause the unit to operate abnormally.

  • Page 21: Electronic Function

    7. Electronic function 7.1 Abbreviation T1: Indoor room temperature T2: Coil temperature of evaporator T3: Coil temperature of condenser T4: Outdoor ambient temperature T5: Compressor discharge temperature 7.2 Display function 7.2.1 Icon explanation on indoor display board. ION indication lamp(optional function)：This lamp illuminates when Clean Air feature is activated.

  • Page 22: Main Protection

    This function is only active in cooling mode. It 7.3 Main Protection can better prevent the compressor being damaged by refrigerant leakage or compressor 7.3.1 Three minutes delay at restart for overload. compressor Less than 1 minute delay for the 1 time Open condition: stand-up and 3 minutes delay for others.

  • Page 23: Operation Modes And Functions

    7.4 Operation Modes and Functions 7.4.1 Fan mode (1) Outdoor fan and compressor stop. (2) Temperature setting function is disabled, and no setting temperature is displayed. (3) Indoor fan can be set to high/med/low/auto. (4) The louver operates same as in cooling mode.
  • Page 24 7.4.2.4 Condenser temperature protection 7.4.3.3 Indoor fan running rules When the compressor is on, the indoor fan can be set to high/med/low/auto/mute. When indoor unit coil temp. is low, the anti-cold Decrease air function will start and indoor fan motor will run at low speed, the speed can’t be Hold changed ,when the temp.
  • Page 25 If any one of the following items is satisfied, the Heating*: For cooling only models, they will run defrosting will finish and the machine will turn to at fan speed normal heating mode. Indoor fan will run at auto fan of the relevant ----T3 rises to be higher than TCDE1℃.
  • Page 26 automatically when reaching the setting “off” minute delay when power on. Other conditions, time, and then turn on automatically when the compressor will have 3 minutes delay when reaching the setting “on” time. restarts. 7.4.7.6 The timer function will not change the AC current operation mode.
  • Page 27 room temperature from the remote controller and the setting temperature. The PCB will take action to the mode change information from remote controller signal, but it will not affected by the setting temperature. When the unit is running with follow me function, if the PCB doesn’t receive any signal from remote controller for 7 minutes or pressing FOLLOW ME button again, the follow me...
  • Page 28 7.4.15 Point check function Press the LED DISPLAY or LED or MUTE button of the remote controller three times, and then press the AIR DIRECTION or SWING button three times in ten seconds, the buzzer will keep ring for two seconds.
  • Page 29 Enquiry Display value Meaning Remark information T1,T2,T3,T4, -1F,-1E,-1d,-1c,- -25,-24,-23,-22,-21,-2 1. All the displaying temperature is actual T2B,TP,TH, 1b,-1A value. Targeted 2. All the temperature is °C no matter what -19—99 -19—99 Frequency, kind of remote controller is used. A0,A1,…A9 100,101,…109 Actual 3.

  • Page 30: Troubleshooting

    8. Troubleshooting Safety Electricity power is still kept in capacitors even the power supply is shut off. Do not forget to discharge the electricity power in capacitor. Electrolytic Capacitors (HIGH VOLTAGE! CAUTION!) For other models, please connect discharge resistance (approx.100Ω 40W) or soldering iron (plug) between +, - terminals of the electrolytic capacitor on the contrary side of the outdoor PCB.

  • Page 31: Indoor Unit Error Display

    8.1 Indoor Unit Error Display Operation Timer lamp Display LED STATUS lamp ☆ 1 time Indoor unit EEPROM parameter error ☆ 2 times Indoor / outdoor units communication error ☆ 3 times Zero-crossing signal detection error ☆ 4 times Indoor fan speed has been out of control Indoor room temperature sensor T1 open circuit or short ☆...

  • Page 32: Trouble Shooting

    8.2 Trouble shooting 8.2.1 EEPROM parameter error diagnosis and solution(E0/F4) E0/F4 Error Code Malfunction decision Indoor or outdoor PCB main chip does not receive feedback conditions from EEPROM chip. Supposed causes Installation mistake ● PCB faulty ● Trouble shooting: EEPROM: a read-only memory whose contents can be erased and reprogrammed using a pulsed voltage.
  • Page 33 8.2.2 Indoor / outdoor unit’s communication diagnosis and solution(E1) Error Code Malfunction decision Indoor unit does not receive the feedback from outdoor unit during conditions seconds and this condition happens four times continuously. Supposed causes Wiring mistake ● Indoor or outdoor PCB faulty ●...
  • Page 34 8.2.3 Zero crossing detection error diagnosis and solution（E2） Error Code Malfunction decision The zero crossing signal time interval is not correct for continuous conditions 240s Supposed causes Indoor PCB faulty ●...
  • Page 35 8.2.4 Fan speed has been out of control diagnosis and solution(E3) E3/F5 Error Code Malfunction decision When indoor fan speed keeps too low (300RPM) for certain time, conditions the unit will stop and the LED will display the failure. Supposed causes Wiring mistake ●...
  • Page 36 Index1: 1:Indoor or Outdoor DC Fan Motor(control chip is in fan motor) Power on and when the unit is in standby, measure the voltage of pin1-pin3, pin4-pin3 in fan motor connector. If the value of the voltage is not in the range showing in below table, the PCB must has problems and need to be replaced.
  • Page 37 8.2.5 Open circuit or short circuit of temperature sensor diagnosis and solution(E5) E4/E5/F1/F2/F3 Error Code Malfunction decision If the sampling voltage is lower than 0.06V or higher than 4.94V, conditions the LED will display the failure. Supposed causes Wiring mistake ●...
  • Page 38 8.2.6 Refrigerant Leakage Detection diagnosis and solution(EC) Error Code Malfunction decision Define the evaporator coil temp.T2 of the compressor just starts conditions running as Tcool. In the beginning 5 minutes after the compressor starts up, if T2 ＜Tcool－2℃ does not keep continuous 4 seconds and this situation happens 3 times, the display area will show “EC”...
  • Page 39 8.2.7 Overload current protection diagnosis and solution(F0) Error Code Malfunction decision An abnormal current rise is detected by checking the specified conditions current detection circuit. Supposed causes Power supply problems. ● System blockage ● PCB faulty ● Wiring mistake ● Compressor malfunction ●...
  • Page 40 8.2.8 IPM malfunction or IGBT over-strong current protection diagnosis and solution(P0) Error Code Malfunction decision When the voltage signal that IPM send to compressor drive chip conditions is abnormal, the display LED will show “P0” and AC will turn off. Supposed causes Wiring mistake ●...
  • Page 41  IPM continuity check Turn off the power, let the large capacity electrolytic capacitors discharge completely, and dismount the IPM. Use a digital tester to measure the resistance between P and UVWN; UVW and N. Digital tester Normal resistance value Digital tester Normal resistance value (+)Red...
  • Page 42 8.2.9 Over voltage or too low voltage protection diagnosis and solution(P1) Error Code Malfunction decision An abnormal voltage rise or drop is detected by checking the conditions specified voltage detection circuit. Supposed causes Power supply problems. ● System leakage or block ●...
  • Page 43 8.2.10 High temperature protection of compressor top diagnosis and solution(P2) Error Code Malfunction decision If the sampling voltage is not 5V, the LED will display the failure. conditions Supposed causes Power supply problems. ● System leakage or block ● PCB faulty ●...
  • Page 44 8.2.11 Inverter compressor drive error diagnosis and solution(P4) Error Code Malfunction decision An abnormal inverter compressor drive is detected by a special conditions detection circuit, including communication signal detection, voltage detection, compressor rotation speed signal detection and so on. Supposed causes Wiring mistake ●...
  • Page 45 Main parts check 1. Temperature sensor checking Disconnect the temperature sensor from PCB, measure the resistance value with a tester. Temperature Sensors. Room temp.(T1) sensor, Indoor coil temp.(T2) sensor, Outdoor coil temp.(T3) sensor, Outdoor ambient temp.(T4) sensor, Compressor discharge temp.(T5) sensor. Measure the resistance value of each winding by using the multi-meter.
  • Page 46 Appendix 1 Temperature Sensor Resistance Value Table for T1,T2,T3,T4 (°C--K) °C °F °C °F °C °F °C °F K Ohm K Ohm K Ohm K Ohm 115.266 12.6431 2.35774 0.62973 108.146 12.0561 2.27249 0.61148 101.517 11.5 2.19073 0.59386 96.3423 10.9731 2.11241 0.57683 89.5865...
  • Page 47 Appendix 2 Temperature Sensor Resistance Value Table for T5 (°C --K) °C °F °C °F °C °F °C °F K Ohm K Ohm K Ohm K Ohm 542.7 68.66 13.59 3.702 511.9 65.62 13.11 3.595 62.73 12.65 3.492 455.9 59.98 12.21 3.392 430.5...
  • Page 48 2.Compressor checking Measure the resistance value of each winding by using the tester. Position Resistance Value ASK89D53UEZ Blue - Red 2.35 Ω Blue - Black (20℃/68℉) Red - Blue...

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