Classic MWOHC09S Service Manual
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Classic MWOHC09S Service Manual

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Model Numbers: 
MWOHC09S/MROHC09AS    -    MWOHC12S/MROHC12AS 
MWOHC18S/MROHC18AS    -    MWOHC24S/MROHC24AS 

Table of Contents

1.
2.
3.
4.
5.
6.
7.
8.
9.
11. Disassembly Instructions
WARNING
Installation MUST conform with local building codes or, in the absence of local codes, with the
National Electrical Code NFPA70/ANSI C1-1993 or current edition and Canadian Electrical
Code Part1 CSA C.22.1.
The information contained in the manual is intended for use by a qualified service technician
familiar with safety procedures and equipped with the proper tools and test instruments
Installation or repairs made by unqualified persons can result in hazards to you and others.
Failure to carefully read and follow all instructions in this manual can result in equipment
malfunction, property damage, personal injury and/or death.
This service is only for service engineer to use.

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Summary of Contents for Classic MWOHC09S

  • Page 1: Table Of Contents

    Model Numbers:  MWOHC09S/MROHC09AS    ‐    MWOHC12S/MROHC12AS  MWOHC18S/MROHC18AS    ‐    MWOHC24S/MROHC24AS  Table of Contents Precaution Part Names And Functions Dimension Refrigerant Cycle Diagram Wiring Diagram Installation Details Operation Characteristics Electronic Function Troubleshooting 10. Exploded View 11. Disassembly Instructions WARNING  Installation MUST conform with local building codes or, in the absence of local codes, with the National Electrical Code NFPA70/ANSI C1-1993 or current edition and Canadian Electrical Code Part1 CSA C.22.1.
  • Page 2 CONTENTS 1. Precaution ..............................1 1.1 Safety Precaution ........................1 1.2 Warning ............................1 2. Part Names And Functions ........................4 2.1 Model Names of Indoor/Outdoor units ..................... 4 2.2 Part names of Indoor/Outdoor units ....................4 2.3 Functions of Indoor/Outdoor units....................5 3.

  • Page 3: Precaution

    Sharp edges could cause injury, be especially careful of the case edges and the fins on the 1. Precaution condenser and evaporator. For installation, always contact the  1.1 Safety Precaution dealer or an authorized service center. To prevent injury to the user or other ...
  • Page 4 There is risk of electric shock or fire. product.  Stop operation and close the window It can avoid vibration of water leakage. in storm or hurricane. If possible, remove  Do not install the product where the the product from the window before the noise or hot air from the outdoor unit could damage the neighborhoods.
  • Page 5  Use a firm stool or ladder when cleaning or maintaining the product. Be careful and avoid personal injury.  Replace the all batteries in the remote control with new ones of the same type. Do not mix old and new batteries or different types of batteries.

  • Page 6: Part Names And Functions

    2. Part Names And Functions 2.1 Model Names of Indoor/Outdoor units Outdoor units Series Capacity Indoor units MWOHC09S MROHC09AS MWOHC12S MROHC12AS Inverter MWOHC18S MROHC18AS MWOHC24S MROHC24AS 2.2 Part names of Indoor/Outdoor units  ...

  • Page 7: Functions Of Indoor/Outdoor Units

    2.3 Functions of Indoor/Outdoor units     Filter       Cold catalyst filter           Ionizer(O) Silent mode(O)           Plasma(O) Horizontal &Vertical Swing Function(O)         Silver Ico Filter(O) Louver Position Memory Function  ...
  • Page 8  Cold Catalyst Filter: Eliminate formaldehyde and other volatile organic compounds as well as harmful gases and odors.  Ionizer: Release negative ions, eliminate odor, dust, smoke and pollen particles to give you fresh and healthy air.  Plasma: Generate a high voltage electrostatic zone, absorb and eliminate dust, smoke and pollen particles. It also deodorizes air as removing tobacco odors, garbage smells etc.
  • Page 9 and protect the system automatically. Meanwhile, the error or protection code will be displayed on the indoor unit.  PTC heating belt: With a PTC heating belt fitted on the base plate of the outdoor unit, the rain, snow or defrosted water accumulating on the base plate is avoided.

  • Page 10: Dimension

    3. Dimension 3.1 Indoor Unit   Model MWOHC09S 835mm 198mm 280mm (32.9in) (7.8in) (11.0in) MWOHC12S 990mm 218mm 315mm MWOHC18S (39.0in) (8.6in) (12.4in) 1186mm 258mm 340mm MWOHC24S (46.7in) (10.2in) (13.4in) Model Dimension of installation hole MWOHC09S 140mm 110mm 45mm Φ65mm(2.56in) (5.5in) (4.3in)
  • Page 11 Model Dimension of installation hole 260mm 135mm 45mm MWOHC18S Φ65mm(2.56in) (10.2in) (5.3in) (1.8in) Model Dimension of installation hole 275mm 275mm 45mm MWOHC24S Φ65mm(2.56in) (10.8in) (10.8in) (1.8in)  ...

  • Page 12: Outdoor Unit

    3.2 Outdoor Unit More than 30cm(11.8in) More than 60cm(23.6in) (Service space More than 30cm(11.8in) More than 60cm(23.6in) More than 70cm(27.6in) Note: The above drawing is only for reference. The appearance of your units may be different. Model MROHC09AS 760mm 285mm 590mm 823mm 530mm...

  • Page 13: Refrigerant Cycle Diagram

    4. Refrigerant Cycle Diagram INDOOR OUTDOOR Electronic CAPILIARY TUBE expansion valve CAPILIARY TUBE LIQUID SIDE 2-WAY VALVE T3 Condenser temp. sensor 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 14: Wiring Diagram

    5. Wiring Diagram 5.1 Indoor Unit MWOHC09S, MWOHC12S, MWOHC18S  ...
  • Page 15 MWOHC24S  ...

  • Page 16: Outdoor Unit

    5.2 Outdoor Unit MROHC09AS, MROHC12AS  ...
  • Page 17 MROHC18AS  ...
  • Page 18 MROHC24AS MROHC09AS, MROHC12AS  ...
  • Page 19 MROHC18AS  ...
  • Page 20 MROHC24AS CN3' rnnn•d to !PM BDARD CNG <+;Sl-(+17lV " " FAN PD"ER SUPPLY : : ; 3 : ' " i i:v :··r : , " "" ' " """' " "' roo" t""p smsor plpe ieMp oensoc CN37 rnnn•d to autOoor OC FA" (+D-(-3 l 290-3CCV DC <stondby) Exouot' "...

  • Page 21: Installation Details

    6.3 Pipe length and the elevation 6 Installation Details Pipe size 6.1 Wrench torque sheet for Models Liquid installation 3/8in 1/4in Additional tightening MWOHC09S/MROHC09AS Outside diameter Torque (Ф9.52mm) (Ф6.35mm) torque 1/2in 1/4in Ф6.35mm 1/4in 1500N.cm(153kgf.cm) 1600N.cm(163kgf.cm) MWOHC12S/MROHC12AS (Ф12.7mm) (Ф6.35mm) Ф9.52mm 3/8in 2500N.cm(255kgf.cm)

  • Page 22: Installation For The First Time

    4) Fully open the handle Lo of the manifold valve. 6.4 Installation for the first time 5) Operate the vacuum pump to evacuate. Air and moisture in the refrigerant system have 6) Make evacuation for 30 minutes and check whether the compound meter indicates undesirable effects as below: -0.1Mpa(14.5Psi).

  • Page 23: Adding The Refrigerant After Running The System For Many Years

    3 times. 3) Put the charging cylinder onto the electronic After purging the air, use a torque wrench to scale and record the weight. tighten the flare nut on the 2-way valve. 4) Operate the air conditioner at the cooling 4).

  • Page 24: Re-Installation While The Outdoor Unit Need To Be Repaired

    4). Set the 2-way valve to the close position. 6). Disconnect the charge set and the charging 5). Operate the air conditioner at the cooling cylinder, and set the 2-way and 3-way valves to cycle and stop it when the gauge indicates the open position 0.1Mpa(14.5Psi).
  • Page 25 to check for gas leakage. 2. Refrigerant charging Procedure: 1). Connect the charge hose to the charging cylinder, open the 2-way valve and the 3-way valve Connect the charge hose which you disconnected from the vacuum pump to the valve at the bottom of the cylinder. If the refrigerant is R410A, make the cylinder bottom up to ensure liquid charge.

  • Page 26: Operation Characteristics

    7. Operation Characteristics Temperature Cooling operation Heating operation Drying operation Mode ＞10 °C °C °C ≥17 ≤30 Room temperature °F °F °F °C ～50 °C °F °F ～122 °C ～30 °C °C ～50 °C °C ～50 °C Outdoor temperature °F ～86 °F °F...

  • Page 27: Electronic Function

    8. Electronic Function 8.1 Abbreviation T1: Indoor room temperature T2: Coil temperature of evaporator T3: Coil temperature of condenser T4: Outdoor ambient temperature T5: Compressor discharge temperature 8.2 Display function 8.2.1 Icon explanation on indoor display board. ION indication lamp(optional function)：This lamp illuminates when Clean Air feature is activated.

  • Page 28: Main Protection

    8.3 Main Protection 8.3.1 Three minutes delay at restart for compressor 1 minute delay for the 1 time stand-up and 3 minutes delay for others. 8.3.2 Temperature protection of compressor top The unit will stop working when the compressor top temp. protector cut off, and will restart after the compressor top temp.
  • Page 29 ---T2>7°C(44.6°F), the compressor frequency will not be limited.  ...

  • Page 30: Operation Modes And Functions

    (4) The louver operates same as in cooling 38¡ ã C (100.4¡ã F ) mode. Fmax=F8 (5) Auto fan: 31.5¡ã C (88.7¡ã F ) For MWOHC09S, MWOHC12S, 29.5¡ ã C (85.1¡ã F ) MWOHC18S models: Fmax=F6 22.0¡ã C (71.6¡ã F ) T1-24¡ã C (75.2¡ã F ) 20.0¡...
  • Page 31 In cooling mode, indoor fan runs all the time and the speed can be selected as high, medium, low, auto and silent mode. When the compressor is running, the indoor fan is controlled as below: I3COOL For MWOHC09S, MWOHC12S, Decrease MWOHC18S models: I2COOL Hold I1COOL...

  • Page 32: Heating Mode

    For MWOHC24S model: T1-Ts- ¦ ¤ T1-Ts 5.0¡C ã (41¡ F ã ) 4.5¡C ã (40.1¡F ã ) 3.5¡C ã (38.3¡ F ã ) 4¡ã C (39.2¡ã F ) 3.0¡ C ã (37.4¡F ã ) High 2.5¡C ã (36.5¡ F ã ) 3¡ã...
  • Page 33 TEL0 run at super breeze. When the compressor is running, the indoor fan is controlled as below: Auto fan action in heating mode. For MWOHC09S, MWOHC12S, MWOHC18S models: T1-Ts+¦ ¤ T 0.0¡ã C (32¡ã F ) (H+-L)*0.2+L -1¡ã...
  • Page 34 For MWOHC24S model: For 9k, 12k models: T1-Ts Frequency F2 FrequencyF8 Compressor 2.5¡ã C (36.5¡ã F ) 4-way valve 2.0¡ã C (35.6¡ã F ) Outdoor fan Medium 1.5¡ã C (34.7¡ã F ) Indoor fan 1.0¡ã C (33.8¡ã F ) High Indoor fan breeze(10s) 8.4.3.4 Defrosting mode no longer than 10m...
  • Page 35 frequency will not be limited by T2. not resume until room temperature exceeds ----T2>60°C(140°F), the compressor will stop 12°C(53.6°F). and restart when T2<48°C(118.4°F). 8.4.5.4 Evaporator anti-freezing protection, 8.4.4 Auto-mode condenser high temperature protection and This mode can be chosen with remote outdoor unit frequency limit are active and the same as that in cooling mode.
  • Page 36 now, it will not start up firstly after setting the the compressor will have 3 minutes delay when “timer off” function. And when reaching the restarts. setting time, the timer LED will be off and the 8.4.10 Follow me AC running mode has not been changed. If the indoor PCB receives the signal which 8.4.7.7 The setting time is relative time.
  • Page 37 show “EC” when the outdoor unit detects which keeps the room temperature steady at refrigerant leakage. 8°C and prevents household things freezing 8.4.13 Louver Position Memory Function when the house is unoccupied for a long time in When starting the unit again after shutting down, severe cold weather.

  • Page 38: Troubleshooting

    9. 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 39: Indoor Unit Error Display

    9.1 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 40: Outdoor Unit Error Display

    9.2 Outdoor unit error display  MROHC09AS and MROHC12AS: After power on, LED100(Blue color) will be slow flash(0.2Hz) when the unit is in standby and quick flash (2.5Hz) if the unit has some problems. LED301 LED300 Problems IU display (Green) (Red)  ...
  • Page 41  MROHC18AS 202302130651 T3.15AL/250VAC FUSE1 CN31 CN32 CN13 CN27 R208 CN28 BLUE BROWN CN29 CN25 BLUE E206 CN26 R217 IC10 4-WAY-N IC201 CN24 C213 CN35 R203 CN33 4-WAY-N L-OUT R204 IPM1 E204 C205 CN30 R207 R214 IC202 BROWN C206 CN17 D207 C210 C202...
  • Page 42  MROHC24AS LED1 (standby) Flashing once per second(low speed flashing) (error) Flashing once per half second (high speed flashing) (running) aways on CN38 IC18 CN24 CN22 CN19 CN18 R111 R112 R114 R113 IC32 IC17 CN37 DC MOTOR R115 CN17 T3/T4 R39 R6 R116 R118...

  • Page 43: Diagnosis And Solution

    9.3 Diagnosis and Solution 9.3.1 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 44 9.3.2 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 45 Remark: Use a multimeter to test the DC voltage between L2 port and S port of outdoor unit. The red pin of multimeter connects with L2 port while the black pin is for S port. When AC is normal running, the voltage will move alternately between -50V to 50V.
  • Page 46 9.3.3 Zero crossing detection error diagnosis and solution(E2) Error Code Malfunction decision When PCB does not receive zero crossing signal feedback for 4 conditions minutes or the zero crossing signal time interval is abnormal. Supposed causes Connection mistake ● PCB faulty ●...
  • Page 47 9.3.4 Fan speed has been out of control diagnosis and solution(E3) 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 48 Index 1: 1. Indoor or Outdoor DC Fan Motor(control chip is in fan motor) Measure the resistance value of each winding by using the tester. If any resistance value is zero, the fan motor must has problems and need to be replaced. Index2: 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...
  • Page 49 2. Outdoor DC Fan Motor(control chip is in outdoor PCB) Orange Grey White Pink Black Color Signal Color Blue Yellow Signal 1) Release the UVW connector. Measure the resistance of U-V, U-W, V-W. If the resistance is not equal to each other, the fan motor must has problems and need to be replaced. Otherwise, go to step 2.
  • Page 50 9.3.5 Open circuit or short circuit of temperature sensor diagnosis and solution(E5) 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 ● Sensor faulty ●...
  • Page 51 9.3.6 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 °C( °F) Tcool－35.6 does not keep continuous 4 ＜Tcool－2 seconds and this situation happens 3 times, the display area will...
  • Page 52 9.3.7 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 53 Take the 9k model as example:  ...
  • Page 54  ...
  • Page 55  ...
  • Page 56 9.3.8 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 57 9.3.9 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 58 9.3.10 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 59 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 60 Appendix 1 Temperature Sensor Resistance Value Table for T1,T2,T3,T4 (°C--K) °C °F K Ohm °C °F K Ohm °C °F K Ohm °C °F 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 61 Appendix 2 Temperature Sensor Resistance Value Table for T5 (°C --K) °C °F K Ohm °C °F K Ohm °C °F K Ohm °C °F 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 62 Appendix 3: °C °F °C °F °C °F °C °F °C °F 69.8 123.8 179.6 235.4 24.8 71.6 125.6 181.4 237.2 26.6 73.4 127.4 183.2 28.4 75.2 129.2 240.8 30.2 186.8 242.6 25.5 77.9 132.8 188.6 244.4 32.9 78.8 134.6 190.4 246.2 33.8...

  • Page 63: Compressor Checking

    2.Compressor checking Measure the resistance value of each winding by using the tester. Position Resistance Value   DA110S1C-30FZ DA130M1C-31FZ DA250S2C-30MT Blue - Red 1.77Ω 0.55Ω 0.8Ω (20°C /68°F) (20°C /68°F) Blue - Black (20°C /68°F) Red - Blue  ...
  • Page 64 3. 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 65 5: Pressure On Service Port Cooling chart: °F °C (23.89) (29.44) (35) (40.56) (46.11) 70/59 10.1 75/63 10.7 80/67 11.2 °F °C (23.89) (29.44) (35) (40.56) (46.11) 70/59 75/63 80/67 °F °C (23.89) (29.44) (35) (40.56) (46.11) 70/59 0.82 0.78 0.81 0.86 1.01...
  • Page 66 Heating Chart:   57/53 47/43 37/33 27/23 17/13 °F (13.89/11.67) (8.33/6.11) (2.78/0.56) (-2.78/-5) (-8.33/-10.56) °C   30.3 28.5 25.3 22.8 20.8 32.5 30.0 26.6 25.4 23.3 33.8 31.5 27.8 26.3 24.9   °F 57/53 47/43 37/33 27/23 17/13 (13.89/11.67) (8.33/6.11) (2.78/0.56) (-2.78/-5) (-8.33/-10.56)

  • Page 67: Exploded View

    10. Exploded View (Version of 2013.07.19) 10.1 Indoor unit MWOHC09S: ONLY FOR STANDARD BOM, CUSTOMIZED FEATURE MAY CHANGE THE PART LIST Part Name BOM Code Part Name BOM Code Panel assembly 201132590959 Horizontal louver 201132590956 Air filter 201132590962 Chassis assembly...
  • Page 68 Ambient temperature sensor Pipe nut 201600330001 19.4 202433190000 assembly Fix clamp of Pipe temperature 201102000305 19.5 202301300584 temperature sensor sensor assembly Evaporator 201532590453 19.6 Wire joint 202301450119 assembly Cover of electronic Fan motor cover 201132490127 201132490126 control box Asynchronous 202400370022 Remote Controller 203355091532 motor...
  • Page 69 MWOHC12S: ONLY FOR STANDARD BOM, CUSTOMIZED FEATURE MAY CHANGE THE PART LIST Part Name BOM Code Part Name BOM Code Panel assembly 201132590959 Horizontal louver 201132590956 Air filter 201132590962 Chassis assembly 201132590963 Display box 203332390972 16.1 Louver motor 202400200031 assembly Display board 201332391249 Pipe clamp board...
  • Page 70 Evaporator 201532590458 19.6 Wire joint 202301450119 assembly Cover of electronic Fan motor cover 201132490127 201132490126 control box Asynchronous 202400370022 Remote Controller 203355091532 motor Bearing holder 201119900952 Seal 202720090001 Bearing base 202719900606 Drain joint 201101020011 Cross flow fan 201100200054 Air freshening filter 201131410703  ...
  • Page 71 MWOHC18S: ONLY FOR STANDARD BOM, CUSTOMIZED FEATURE MAY CHANGE THE PART LIST Part Name BOM Code Part Name BOM Code Panel assembly 201132890674 Bearing holder 201119900952 Air filter 201132890670 Bearing base 202719900606 Display box 203332390972 Cross flow fan 201100200056 assembly Display board 201332391249 Chassis assembly...
  • Page 72 Ambient Drain hose 201101020038 21.5 temperature sensor 202432390005 assembly Pipe temperature Pipe nut 201600330001 21.6 202301300584 sensor assembly Cover of electronic Pipe nut 201600330003 201133090981 control box Fix clamp of 201102000305 Remote Controller 203355091532 temperature sensor Evaporator 201532890153 Seal 202720090001 assembly Fan motor cover 201133090980...
  • Page 73 MWOHC24S: ONLY FOR STANDARD BOM, CUSTOMIZED FEATURE MAY CHANGE THE PART LIST Part Name BOM Code Part Name BOM Code Panel assembly 201133090997 Cross flow fan 201100200057 Air filter 201133090992 Chassis assembly 201133090995 Display box 203332390972 Pipe clamp board 201133090989 assembly Display board 201332391249...
  • Page 74 21.1 Pipe nut 201600330002 Fan motor capacitor 202401100354 Fix clamp of 201102000305 Remote Controller 203355091532 temperature sensor Evaporator 201533090129 Seal 202720090001 assembly Fan motor cover 201133090991 Drain joint 201101020011 Asynchronous 202400401301 Air freshening filter 201131410703 motor Horizontal louver Bearing holder 201119900952 201133090993 (above)

  • Page 75: Outdoor Unit

    10.2 Outdoor unit MROHC09AS: ONLY FOR STANDARD BOM, CUSTOMIZED FEATURE MAY CHANGE THE PART LIST Part Name BOM Code Part Name BOM Code   Ambient             temperature 202301300115 Left supporter 201237400400 sensor assembly      ...
  • Page 76 Electronic Front panel 201237400392 22.2 expansion valve 201601300554 assembly Axial flow fan 201100390002 Compressor 201400601510 Asynchronous Crankcase electric 202400300060 202403100501 motor heater Supporter Discharge assembly of fan 201237390026 temperature sensor 202301310068 motor assembly Partition board 201237500259 Reactor 202301000867 assembly  ...
  • Page 77 MROHC12AS: ONLY FOR STANDARD BOM, CUSTOMIZED FEATURE MAY CHANGE THE PART LIST Part Name BOM Code Part Name BOM Code Ambient temperature sensor 202301300115 Left supporter 201237400400 assembly               2011374G000 Rear net Top cover assembly 201237900028 Condenser Electronic control...
  • Page 78 Liquid valve Air outlet grille 201237390105 201637391145 ssembly Clamp of front net 201135110801 22.1 Liquid valve 201600740523 Electronic Front panel 201237400392 22.2 expansion valve 201601300554 assembly Axial flow fan 201100390002 Compressor 201400601510 Asynchronous Crankcase electric 202400300060 202403100501 motor heater Supporter Discharge assembly of fan 201237390026...
  • Page 79 MROHC18AS: ONLY FOR STANDARD BOM, CUSTOMIZED FEATURE MAY CHANGE THE PART LIST Part Name BOM Code Part Name BOM Code   Ambient           Electronic control temperature sensor 202301310075 203337890332 box assembly assembly 2011481G000 Terminal board Rear net 203337990161 assembly  ...
  • Page 80 Front panel 201248100390 Compressor 201400603269 Crankcase Air outlet grille 201237890112 202403100501 electric heater Discharge Axial flow fan 201145500002 temperature 202301310068 sensor assembly Asynchronous Cover of 202400300033 201248090001 motor inductance Supporter assembly of fan 201257090031 Reactor 202301000820 motor Rear supporter 201248100384 Reactor 202301000819 Top cover assembly...
  • Page 81 MROHC24AS: ONLY FOR STANDARD BOM, CUSTOMIZED FEATURE MAY CHANGE THE PART LIST W310-BP-R-001-1 Part Name BOM Code Part Name BOM Code Ambient Main control temperature sensor 202301310075 20.2 201338090071 board assembly assembly 2011482G000 Inverter control Rear net 20.3 201357190085 board assembly Installation board Condenser 201538090077...
  • Page 82 Front right clapboard 201248200082 22.1 Liquid valve 201600740706 assembly Electronic Front panel 201248200103 22.3 201601300032 expansion valve 4-way valve Air outlet grille 201238090068 201638091121 assembly Axial flow fan 201100300527 23.1 Gas valve 201600720398 Asynchronous 202400300047 23.2 4-Ways valve 201600600119 motor Supporter assembly of fan 201257190071...

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