Midea MSV1-12HRDN1-MQ0W Service Manual
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Midea MSV1-12HRDN1-MQ0W Service Manual

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Revision A: 1305080001, Content updated.
Model Numbers:
MSV1-09HRFN1-MT0W
MSV1-12HRDN1-MQ0W
0
MSV1-24HRDN1-MQ0W

Table of Contents

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9.
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.
VERTU MONO Split DC Inverter
Air Conditioner
SERVICE MANUAL
MSV1-12HRFN1- MT0W
MSV1-18HRDN1-MQ0W
Mono DC

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Questions and answers

Richard Stefanick
May 2, 2025

I need a new fan and the part number to order it. midea MSV1-24HRDN1-MQOW. WHAT BTU OR COOLING CAPACITY IS THIS CONDENSER?

0
1 comments:
Mr. Anderson
May 17, 2025

The Midea MSV1-24HRDN1-MQ0W condenser has a cooling capacity of 24,000 BTU.

This answer is automatically generated

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Summary of Contents for Midea MSV1-12HRDN1-MQ0W

  • Page 1: Table Of Contents

    VERTU MONO Split DC Inverter Air Conditioner Mono DC SERVICE MANUAL Revision A: 1305080001, Content updated. Model Numbers: MSV1-09HRFN1-MT0W MSV1-12HRFN1- MT0W MSV1-12HRDN1-MQ0W MSV1-18HRDN1-MQ0W MSV1-24HRDN1-MQ0W Table of Contents Precaution Part names and functions Dimension Refrigerant Cycle Diagram Wiring Diagram Installation Details...
  • Page 2 CONTENTS 1. Precaution ...............................1 1.1 Safety Precaution .......................... 1 1.2 Warning ............................1 2. Part Names And Functions ........................2 2.1 Model Names of Indoor/Outdoor units ..................2 2.2 Part names of Indoor/Outdoor units ..................... 2 2.3 Functions of Indoor/Outdoor units ....................3 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 Do not install the product on a people and property damage, the following defective installation stand.
  • Page 4 product. There is risk of electric shock or fire.  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 hurricane arrives.
  • 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 Capacity Indoor units Outdoor units MSV1-09HRFN1-MT0W MOC-09HFN1-MT0W MSV1-12HRFN1-MT0W MOC-12HFN1-MT0W Inverter MSV1-12HRDN1-MQ0W MOC-12HDN1-MQ0W MSV1-18HRDN1-MQ0W MOF-18HDN1-MQ0W MSV1-24HRDN1-MQ0W MOG-24HDN1-MQ0W 2.2 Part names of Indoor/Outdoor units Indoor Unit:...

  • Page 7: Functions Of Indoor/Outdoor Units

    2.3 Functions of Indoor/Outdoor units Filter Cold Catalyst Filter Ionizer Silver Ion Filter Vitamin C Filter(O) 3M HAF Filter(O) Bio Filter(O) 8 Degree Heating(O) Golden Fin Heat Compensation(O) Self Clean(O) Self-diag. Function Follow Me PTC Heating Belt(O) Compressor Crankcase Heater Automatic Panel O: optional 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.  Silver Ion Filter: Sterilize bacteria effectively by decomposing cell wall of bacteria.
  • Page 9  Compressor crankcase heater: The oil dissolves easily in refrigerant, especially in low temperature condition. The crankcase heating belt can heat the bottom of the compressor to avoid pumping out too much oil with the refrigerant, which helps to protect the compressor.

  • Page 10: Specification

    3. Specification Code 2T0032300361 2T0032500279 Indoor code 220032304710 220032503610 Outdoor code 220037303660 220037503660 Indoor model MSV1-09HRFN1-MT0W MSV1-12HRFN1- MT0W Outdoor model MOC-09HFN1-MT0W MOC-12HFN1-MT0W Power supply Ph-V-Hz 1Ph, 208-230V～, 60Hz 1Ph, 208-230V～, 60Hz MINIMUM CIRCUIT AMPACITY MAX.FUSE Moisture removal Model DA108X1C-20FZ3 DA108X1C-20FZ3 Type ROTARY ROTARY...
  • Page 11 Speed r/min Dimension(W*D*H) 760x285x590 760x285x590 Dimension(W*D*H) inch 29.92x11.22x23.23 29.92x11.22x23.23 Packing (W*D*H) 887x355x645 887x355x645 Outdoor unit Packing (W*D*H) inch 34.92x13.98x25.39 34.92x13.98x25.39 Net/Gross weight 38.5/41 39.5/42 Net/Gross weight lbs. 84.88/90.39 87.08/92.59 Refrigerant type R410A/1100g R410A/1250g Refrigerant type R410A/38.8 R410A/44.1 Design pressure PSIG 550/340 PSIG 550/340 PSIG Application area...
  • Page 12 2T0032500244 2T0032700154 Code 220032503340 220032702340 Indoor code 220037502530 220037701530 Outdoor code MSV1-12HRDN1-MQ0W MSV1-18HRDN1-MQ0W Inoor model MOC-12HDN1-MQ0W MOF-18HDN1-MQ0W Outdoor model Power supply Ph-V-Hz 1Ph, 208-230V～, 60Hz 1Ph, 208-230V～, 60Hz MINIMUM CIRCUIT AMPACITY MAX.FUSE Moisture Removal Model DA108X1C-20FZ3 DA150S1C-20FZ Type ROTARY Twin-rotary...
  • Page 13 Packing (W*D*H) 887x355x645 965x395x755 Packing (W*D*H) inch 34.92x13.98x25.39 37.99x15.55x29.72 Net/Gross weight 39/41.5 50/54 Net/Gross weight lbs. 85.98/91.49 110.23/119.05 Refrigerant type R410A/1100g R410A/1650g Refrigerant type R410A/38.8 R410A/58.2 Design pressure PSIG 550/340 PSIG 550/340 PSIG Application area 18-29 26-44 Application area sq.ft 194-312 280-474...
  • Page 14 2T0033000227 Code Indoor code 220033002880 220038002170 Outdoor code MSV1-24HRDN1-MQ0W Inoor model Outdoor model MOG-24HDN1-MQ0W Power supply Ph-V-Hz 1Ph, 208-230V～, 60Hz MINIMUM CIRCUIT AMPACITY MAX.FUSE Moisture Removal Model DA150S1C-20FZ Type Twin-rotary Brand GMCC Capacity Btu/h 15286 Input 1150 Compressor Rated current(RLA) Locked rotor Amp(LRA) ---- Thermal protector...
  • Page 15 Packing (W*D*H) 1043x395x915 Packing (W*D*H) inch 41.06x15.55x36.02 Net/Gross weight 62/67 Net/Gross weight lbs. 136.69/147.71 Refrigerant type R410A/1900g Refrigerant type R410A/67.0 Design pressure PSIG 550/340 PSIG Application area 34-56 Application area sq.ft 366-603...

  • Page 16: Dimension

    4. Dimension 4.1 Indoor Unit Model MSV1-09HRFN1-MT0W 845mm 165mm 286mm MSV1-12HRFN1- MT0W (33.27in) (6.5in) (11.26in) MSV1-12HRDN1-MQ0W MSV1-18HRDN1-MQ0W 1082mm 207mm 320mm (42.60in) (8.15in) (12.60in) MSV1-24HRDN1-MQ0W...
  • Page 17 Model Dimension of installation hole MSV1-09HRFN1-MT0W 186mm 150mm 45mm MSV1-12HRFN1- MT0W (7.32in) (5.91in) (1.77in) Φ65mm(2.56in) MSV1-12HRDN1-MQ0W MSV1-18HRDN1-MQ0W 138.5mm 150mm 45mm (5.45in) (5.91in) (1.77in) MSV1-24HRDN1-MQ0W...

  • Page 18: Outdoor Unit

    4.2 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 MOC-09HFN1-MT0W 760mm 285mm 590mm 823mm 530mm...

  • Page 19: Refrigerant Cycle Diagram

    5. Refrigerant Cycle Diagram INDOOR OUTDOOR CHECK VALVE LIQUID SIDE (Heating Model only) 2-WAY VALVE CAPILIARY TUBE HEAT HEAT EXCHANGE EXCHANGE (EVAPORATOR) (CONDENSER) GAS SIDE REVERSING VALVE 3-WAY VALVE (Heating Model only) ACCUMULATOR COOLING COMPRESSOR HEATING...

  • Page 20: Wiring Diagram

    6. Wiring Diagram 6.1 Indoor Unit MSV1-09HRFN1-MT0W, MSV1-12HRFN1-MT0W...
  • Page 21 MSV1-12HRDN1-MQ0W...
  • Page 22 MSV1-18HRDN1-MQ0W, MSV1-24HRDN1-MQ0W...

  • Page 23: Outdoor Unit

    6.2 Outdoor Unit MOC-09HFN1-MTOW, MOC-12HFN1-MTOW...
  • Page 24 MOC-12HDN1-MQ0W...
  • Page 25 MOC-12HDN1-MQ0W with low ambient temp. cooling function...
  • Page 26 MOF-18HDN1-MQ0W...
  • Page 27 MOF-18HDN1-MQ0W with low ambient temp. cooling function...
  • Page 28 MOG-24HDN1-MQOW...
  • Page 29 MOG-24HDN1-MQOW with low ambient temp. cooling function...
  • Page 30 MOC-09HFN1-MTOW, MOC-12HFN1-MTOW...
  • Page 31 MOC-12HDN1-MQ0W...
  • Page 32 MOF-18HDN1-MQ0W, MOG-24HDN1-MQOW...

  • Page 33: Installation Details

    (Ф9.52mm) (Ф6.35mm) torque Ф6.35mm 1/4in 1500N.cm(153kgf.cm) 1600N.cm(163kgf.cm) MSV1-12HRFN1-MT0W+MOC-12HFN1-MT0W 1/2in 1/4in Ф9.52mm 3/8in 2500N.cm(255kgf.cm) 2600N.cm(265kgf.cm) (Ф12.7mm) (Ф6.35mm) Ф12.7mm 1/2in 3500N.cm(357kgf.cm) 3600N.cm(367kgf.cm) MSV1-12HRDN1-MQ0W+MOC-12HDN1-MQ0W Ф15.9mm 5/8in 4500N.cm(459kgf.cm) 4700N.cm(479kgf.cm) 1/2in 1/4in MSV1-18HRDN1-MQ0W+MOF-18HDN1-MQ0W (Ф12.7mm) (Ф6.35mm) Ф19mm 3/4in 6500N.cm(663kgf.cm) 6700N.cm(683kgf.cm) 5/8in 3/8in MSV1-24HRDN1-MQ0W+MOG-24HDN1-MQ0W (Ф15.9mm) (Ф9.52mm) Max.

  • Page 34: Installation For The First Time

    7.4 Installation for the first time 5) Operate the vacuum pump to evacuate. 6) Make evacuation for 30 minutes and check Air and moisture in the refrigerant system have whether the compound meter indicates undesirable effects as below: -0.1Mpa(14.5Psi). If the meter does not indicate -0.1Mpa(14.5Psi) after pumping 30...

  • Page 35: Adding The Refrigerant After Running The System For Many Years

    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). Check the gas leakage. mode. Check the flare connections for gas leakage. 5) Open the valves (Low side) on the charge set 5).

  • Page 36: Re-Installation While The Indoor Unit Need To Be Repaired

    6).When the electronic scale displays the Do this quickly so that the gauge ends up proper weight (refer to the gauge and the indicating 0.3Mpa(43.5Psi) to 0.5 Mpa(72.5Psi). pressure of the low side), disconnect the charge Disconnect the charge set, and tighten the hose from the 3-way valve’s service port 2-way and 3-way valve’s stem nuts.

  • Page 37: Re-Installation While The Outdoor Unit Need To Be Repaired

    port cap valve Be sure to use a torque wrench to tighten the Connect the charge hose which you service port cap to a torque 18N.m. disconnected from the vacuum pump to the Be sure to check the gas leakage. valve at the bottom of the cylinder.

  • Page 38: Operation Characteristics

    8. Operation Characteristics Temperature Cooling operation Heating operation Drying operation Mode ＞10℃ ≥17℃ ≤30℃ Room temperature (62℉) (86℉) (50℉) 0℃～50℃ (32℉～122℉) -15℃～50℃ -15℃～30℃ 0℃～50℃ Outdoor temperature (5℉～86℉) (32℉～122℉) (5℉～122℉) (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 39: Electronic Function

    DIGITAL DISPLAY 9. Electronic Function Display the current setting temperature or malfunction code 9.1 Abbreviation when the air conditioner is in operation. When SELF CLEAN T1: Indoor room temperature function is activated, it will T2: Coil temperature of evaporator display “SC” T3: Coil temperature of condenser FAN SPEED display T4: Outdoor ambient temperature...

  • Page 40: Main Protection

    9.3 Main Protection Preheating mode: A weak current flow through the coil of 9.3.1 Three Minutes Delay at restart for compressor from the wiring terminal of the compressor compressor, then the compressor is heated 1 minute delay for the 1 time stand-up and 3 without operation.

  • Page 41: Operation Modes And Functions

    9.4 Operation Modes and Functions compressor. F1~F8: The detailed value of the compressor 9.4.1 Fan mode operation frequency. (1) Outdoor fan and compressor stop. If users switch on AC by remote controller, the (2) Temperature setting function is disabled, compressor will run at the Fmax frequency for 7 and no setting temperature is displayed.
  • Page 42 I3COOL High Decrease I2COOL Medium Hold I1COOL Resume 9.4.3 Heating Mode 9.4.3.1 Compressor running rules The maximum operation frequency of the I3COOL, I2COOL,I1COOL mean different compressor after starting submits to the running current value. following rule. Off: Compressor stops. Decrease: Decrease the running frequency to the lower level.
  • Page 43 During the 7 minutes, the frequency limitation is active. 7 minutes later, the compressor running I3HEAT frequency will be controlled as below: Decrease I2HEAT +5.0 Hold I1HEAT +4.5 Resume +3.5 +3.0 I3HEAT, I2HEAT,I1HEAT mean different +2.5 running current value. Off: Compressor stops. +2.0 Decrease: Decrease the running frequency to +1.5...
  • Page 44 Setting Medium High Breeze 9.4.3.4 Defrosting mode Condition of defrosting: ----T4＞0℃, For 9k,12k models: When the units are running, if the following two items are satisfied, the units start defrosting: The units run with T3＜3℃ for 40 minutes and T3 keeps lower than TCDI℃ for more than 3 Setting minutes.
  • Page 45 Frequency F2 FrequencyF8 Compressor 4-way valve Outdoor fan Indoor fan Indoor fan breeze(10s) no longer than 10m...
  • Page 46 For 18k and 24k models: The louver operates same as in relevant mode. If the machine switches mode between heating Frequency F2 Frequency F8 and cooling, the compressor will keep stopping Compressor for 15 minutes and then choose mode according to T1-Ts. 4-way valve If the setting temperature is modified, the machine will choose running function again.
  • Page 47 protections and remote control are available. stops rising and indoor fan is fixed as low speed. 9.4.6.3 Operation rules: (Anti-cold wind function has the priority) Forced cooling mode: 9.4.8.3 Timer setting is available The compressor runs at F2 frequency and 9.4.8.4 When user uses timer off function in indoor fan runs as breeze.
  • Page 48 9.4.11 8℃ Heating(optional) the house is unoccupied for a long time in In heating operation, the preset temperature of severe cold weather. the air conditioner can be as lower as 8℃, which keeps the room temperature steady at 8℃ and prevents household things freezing when...

  • Page 49: Troubleshooting

    10. 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 MSV1-09HRFN1-MT0W and MSV1-12HRFN1- MT0W models, there is a discharge resistance fixed on outdoor PCB board already.
  • Page 50 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. Note: The picture above is only for reference. The plug of your side may be different.

  • Page 51: Indoor Unit Error Display

    Zero-crossing signal error(except MSV1-09HRFN1-MT0W and MSV1-12HRFN1- MT0W models) Indoor unit fan speed has been out of control(only for MSV1-09HRFN1-MT0W, MSV1-12HRFN1- MT0W, MSV1-12HRDN1-MQ0W models) Open circuit or short circuit of outdoor unit temperature sensor/ outdoor unit EEPROM parameter error Open circuit or short circuit of room or evaporator temperature sensor...

  • Page 52: Outdoor Unit Error Display

    10.2 Outdoor unit error display LED1 (yellow) LED4 (red) LED5 & LED6 (red) (green) standby operating LED1 slow flashing(0.2Hz) LED4 The picture of PCB above is only for reference. LED 4 is a red light and for the PCB POWER display. LED 1 is a yellow light.

  • Page 53: Diagnosis And Solution

    10.3 Diagnosis and Solution 10.3.1 EEPROM parameter error diagnosis and solution(E0/E5) E0/E5 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: Shut off the power supply and turn it on 5 seconds later.
  • Page 54 10.3.2 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 55 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 56 10.4.3 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 57 10.4.4 Fan speed has been out of control diagnosis and solution(E3/E7) Error Code E3/E7 Malfunction decision When indoor or outdoor fan speed keeps too low (300RPM) for conditions certain time, the unit will stop and the LED will display the failure.
  • Page 58 Index 1: 1.Indoor AC fan motor Measure the resistance value of each winding by using the tester. For the definite value of the resistance, refer to page61 and page64. 2.Indoor or outdoor DC fan motor(control chip is inside fan motor) Measure the resistance value of each winding by using the tester.
  • Page 59 2. Indoor or outdoor DC fan motor(control chip is inside 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 have problems and need to be replaced.
  • Page 61 10.4.5 Open circuit or short circuit of temperature sensor diagnosis and solution(E5/E6) Error Code E5/E6 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 62 Replace the outdoor main PCB if the main PCB and IPM are separate. Remark： MSV1-12HRDN1-MQ0W model: Measure the black pin and red pin of the motor connector, the resistance should be around 293Ω at 20℃(68℉) MSV1-18HRDN1-MQ0W model: Measure the black pin and red pin of the motor connector, the resistance should be around 56Ω...
  • Page 65 10.4.7 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 66 10.4.8 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 67 Replace the outdoor main PCB if the main PCB and IPM are separate. Remark： MSV1-12HRDN1-MQ0W model: Measure the black pin and red pin of the motor connector, the resistance should be around 293Ω at 20℃(68℉) MSV1-18HRDN1-MQ0W model: Measure the black pin and red pin of the motor connector, the resistance should be around 56Ω...
  • Page 68 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 69 Appendix 1 Temperature Sensor Resistance Value Table for T1,T2,T3,T4 (℃--K) ℃ ℉ ℃ ℉ ℃ ℉ ℃ ℉ 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 70 Appendix 2 Temperature Sensor Resistance Value Table for T5 (℃--K) ℃ ℉ ℃ ℉ ℃ ℉ ℃ ℉ 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 57.37...
  • Page 71 Appendix 3: ℃ 10 11 12 13 14 15 16 17 18 19 20 21 22 ℉ 48 50 52 54 56 58 60 62 64 66 68 70 72 ℃ 23 24 25 26 27 28 29 30 31 32 33 34 35 ℉...
  • Page 72 Spec. Code 2T0032300361 2T0032500279 2T0032500244 Model MSV1-09HRFN1-MT0W MSV1-12HRFN1- MT0W MSV1-12HRDN1-MQ0W Compressor DA108X1C-20FZ3 DA108X1C-20FZ3 DA108X1C-20FZ3 Indoor fan motor WZDK20-38G(☆) WZDK20-38G(☆) RPG20B Outdoor fan motor WZDK35-38G (☆) WZDK35-38G (☆) YDK24-6GB Code 2T0032700154 2T0033000227 Model MSV1-18HRDN1-MQ0W MSV1-24HRDN1-MQ0W Compressor DA150S1C-20FZ DA150S1C-20FZ Indoor fan motor...
  • Page 73 2.Compressor checking Measure the resistance value of each winding by using the tester. Position Resistance Value DA108X1C-20FZ3 DA150S1C-20FZ 0.95Ω Blue - Red 0.71Ω (20℃/68℉) Blue - Black (20℃/68℉) Red - Blue...
  • Page 74 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 75 5: Pressure On Service Port Cooling chart: ℉ （23.89） （29.44） （35） （40.56） （46.11） (℃) 70/59 10.1 75/63 10.7 80/67 11.2 ℉ （23.89） （29.44） （35） （40.56） （46.11） (℃) 70/59 75/63 80/67 ℉ （23.89） （29.44） （35） （40.56） （46.11） (℃) 70/59 0.82 0.78 0.81 0.86 1.01...
  • Page 76 Heating Chart: ℉ 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) 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 ℉ 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 77: Exploded View

    11. Exploded View (Version of 2013.05.08) 11.1 Indoor unit MSV1-09HRFN1-MT0W: Part Name BOM Code Part Name BOM Code Panel assembly 201132590008 Evaporator assembly 201532390036 Pipe nut 201600330002 Hinge Slide groove 201132500010 Pipe nut 201600330001 Air cleaner 201131410703 Fan motor cover 201132500017 Bracket of air filter 201132200713...
  • Page 78 25.6 Wire joint 202301450119 13.2 Ionizer generator 202403000006 Remote Controller 203355091200 13.3 Horizontal louver 201132500060 Seal ring 202720090001 Drain hose 201101020038 Fix clamp of 201102000305 Drain connecter 201101020011 temperature sensor...
  • Page 79 MSV1-12HRFN1- MT0W: Part Name BOM Code Part Name BOM Code Panel assembly 201132590008 Evaporator assembly 201532590004 Hinge slide groove 201132500010 Pipe nut 201600330003 Air cleaner 201131410703 Pipe nut 201600330001 Bracket of air filter 201132200713 Fan motor cover 201132500017 Air filter(left) 201132500013 Asynchronous motor 202400370022...
  • Page 80 Drain hose 201101020038 Seal ring 202720090001 Fix clamp of 201102000305 Drain connecter 201101020011 temperature sensor...
  • Page 81 MSV1-12HRDN1-MQ0W Part Name BOM Code Part Name BOM Code Panel assembly 201132590008 Pipe nut 201600330003 Hinge Slide groove 201132500010 Pipe nut 201600330001 Air cleaner 201131410703 Fan motor cover 201132500017 Bracket of air filter 201132200713 Asynchronous motor 202400300137 Air filter(left) 201132500013...
  • Page 82 13.3 Horizontal louver 201132500060 Remote Controller 203355091200 Drain hose 201101020038 Seal ring 202720090001 Fix clamp of 201102000305 Drain connecter 201101020011 temperature sensor Evaporator assembly 201532590004...
  • Page 83 MSV1-18HRDN1-MQ0W Part Name BOM Code Part Name BOM Code Panel assembly 201133090178 Fan motor cover 201133090176 Hinge Slide groove 201132890023 Asynchronous motor 202400400931 Asynchronous motor Air cleaner 201131410703 Bearing base 202730100201 Bearing base Bracket of air filter 201132200713 Cross flow fan 201100200110 Cross flow fan Air filter(left)
  • Page 84 Fixing board of fan Evaporator assembly 201532890103 201133090167 motor Horizontal louver Pipe nut 201600330001 201133091003 (above) Horizontal louver Pipe nut 201600330003 201133091002 (below)
  • Page 85 MSV1-24HRDN1-MQ0W Part Name BOM Code Part Name BOM Code Panel assembly 201133090178 Fan motor cover 201133090176 Hinge Slide groove 201132890023 Asynchronous motor 202400400931 Air cleaner 201131410703 Bearing base 202730100201 Bracket of air filter 201132200713 Cross flow fan 201100200110 Air filter(left) 201133090174 Chassis assembly 201133090180...
  • Page 86 Fixing board of fan Evaporator assembly 201533090113 201133090167 motor Horizontal louver Pipe nut 201600330002 201133091003 (above) Horizontal louver Pipe nut 201600330004 201133091002 (below)

  • Page 87: Outdoor Unit

    11.2 Outdoor unit MOC-09HFN1-MTOW Part Name BOM Code Part Name BOM Code Ambient temperature 202301310063 16.3 Reactance 202301000820 sensor assembly Rear net 2011374G0003 16.3 Reactance 202301000819 Condenser assembly 201537390033 Left supporter 201237400400 Pipe temperature 202440500004 Top cover assembly 201237900028 sensor assembly Electronic control box Valve plate 201237200282...
  • Page 88 Capacitor of Discharge 16.1 202401000612 202301310068 compressor temperature sensor assembly Electric heater of 16.2 Capacitor clip 201200100002 202403100187 chassis...
  • Page 89 MOC-12HFN1-MTOW Part Name BOM Code Part Name BOM Code Ambient temperature 202301310063 16.3 Reactance 202301000820 sensor assembly Rear net 2011374G0003 16.3 Reactance 202301000819 Condenser assembly 201537490008 Left supporter 201237400400 Pipe temperature 202440500004 Top cover assembly 201237900028 sensor assembly Electronic control box Valve plate 201237200282 203337390156...
  • Page 90 Electric heater of 16.2 Capacitor clip 201200100002 202403100187 chassis...
  • Page 91 MOC-12HDN1-MQ0W Part Name BOM Code Part Name BOM Code Ambient temperature Electronic control box 202440220061 203337390153 sensor assembly assembly Terminal board Rear net 2011374G0003 203337590049 assembly Condenser assembly 201537390033 20.1 Wire joint 202301400223 Pipe temperature 202440500004 20.2 Terminal board 201237590046 sensor assembly 4-Ways valve Valve plate...
  • Page 92 Top cover assembly 201237900028...
  • Page 93 MOC-12HDN1-MQ0W Part Name BOM Code Part Name BOM Code Ambient temperature Electronic control box 202301310075 203338090138 sensor assembly assembly Terminal board Rear net 2011481G0001 203337990161 assembly Condenser assembly 201537990036 21.1 Wire joint 202301400256 Pipe temperature 202440500004 21.2 Terminal board 201237890064 sensor assembly Valve plate 201237300285...
  • Page 94 Left supporter 201248100367 Capacitor clip 201200100026 Partition board 201237790031 assembly...
  • Page 95 MOF-18HDN1-MQ0W Part Name BOM Code Part Name BOM Code Ambient temperature Electronic control box 202301310075 203338090138 sensor assembly assembly Terminal board Rear net 2011481G0001 203337990161 assembly Condenser assembly 201537990036 21.1 Wire joint 202301400256 Pipe temperature 202440500004 21.2 Terminal board 201237890064 sensor assembly Valve plate 201237300285...
  • Page 96 Left supporter 201248100367 Capacitor clip 201200100026 Partition board 201237790031 assembly...
  • Page 97 MOG-24HDN1-MQOW Part Name BOM Code Part Name BOM Code Ambient temperature 202301310075 21.2 Terminal board 201238090032 sensor assembly Rear net 2011482G0001 Liquid valve assembly 201638091089 Condenser assembly 201538090038 22.1 Liquid valve 201600740706 Pipe temperature 202301300111 Gas valve assembly 201638090251 sensor assembly Valve plate 201248300316 23.1...
  • Page 98 Fix clamp of Top cover assembly 201248300309 201245000901 segregator Left supporter 201248400036 Capacitor clip 201200100026 Partition board Capacitor of 201238090004 202401000612 sembly compressor Electronic control box 203338090134 Inductance cover 201238090037 assembly Terminal board Protecting board of 203338090187 201238090038 assembly inductance 21.1 Wire joint 202301450118...

  • Page 99: Disassembly Instructions

    12 Disassembly Instructions 12.1 Indoor unit Parts name Procedures Remarks Front panel How to remove the front Overview: panel. Pull the below side of the panel and release the clips. Then remove the One screw Panel fixing the cover front panel. Remove the filter and Clip horizontal louver.
  • Page 100 Electrical How to remove the Swing motors Grounding screws Room temp. sensor parts electrical parts. After remove the Evaporator coil front panel from temp. sensor procedure 1, pull out the room temp. sensor and evaporator coil sensor. Remove the grounding screws.
  • Page 101 Evaporator How to remove the evaporator. 1) After remove the front panel ass’y and electrical parts following procedure 1 and procedure 2, remove the pipe holder at the rear side of the unit. Pipe holder fixing by one screw. 2) Remove the four screws on the evaporator at the base bearing side.
  • Page 102 Fan and How to remove the fan motor and motor. After remove the evaporator ass’y following procedure 1, procedure 2 and procedure 3, remove the five screws. 2) Then separate the fan and motor. Five screws...

  • Page 103: Outdoor Unit

    12.2 Outdoor unit  MOC-09HFN1-MTOW, MOC-12HFN1-MTOW Part name Procedures Remarks Panel plate How to remove the panel plate. Screws of top panel Stop operation of the air conditioner and turn “OFF” the power breaker. Refer to the right side photos, find out the fixing screws of the panels.
  • Page 104 Screw of the top Remove the screws of panel the front panel, including the fixing screws of motor holder and then remove the front panel. Screws of right rear plate Remove the screws of the right side plate and Screw of remove the right side top panel plate.
  • Page 105 Fan ass’y How to remove the fan Electronic control box ass’y. Fan ass’y Terminals After remove the panel plate following procedure 1, remove the hex nut fixing the fan and then remove the fan. Two reactors Compressor and liquid-gas separator Unfix the hooks and then open the electronic Nut fixing the fan...
  • Page 106 Fan motor connector Disconnect the connector for fan motor from the electronic control board. Remove the four fixing screws of the fan motor. 5) Then remove the fan Four motor. screws Electrical How to remove the parts electrical parts. After finish work of item 1 and item 2, remove the two connectors for the compressor and the...
  • Page 107 Pull out connectors of the compressor top temp. sensor, condenser coil temp. sensor(T3),outdoor ambient temp. sensor(T4) and discharge temp. sensor(T5). Four temp. sensor connectors Disconnect the compressor crankcase heater connector. Remove the ground wires . Remove the power supply wires(L1,L2,S). Then remove the electronic control box.
  • Page 108 Four-way How to remove the valve four-way valve. The picture of four-way valve may be different from Perform work of item the one on your side. 1,2,3. Recover refrigerant Four-way from the refrigerant circuit. valve Remove the screw of Welded the coil and then remove parts the coil.
  • Page 109  MOF-18HDN1-MQ0W Part name Procedures Remarks Panel plate How to remove the panel plate. Screws of top panel 1) Stop operation of the air conditioner and turn “OFF” the power breaker. Refer to the right side photos, find out the fixing screws of the panels.
  • Page 110 Screw of the top Remove the screws of panel the front panel, including the fixing screws of motor holder and then remove the front panel. Screws of right rear plate Remove the screws of Screw of the right side plate and top panel remove the right side plate.
  • Page 111 Fan ass’y How to remove the fan Electronic control box LAK board(optional) ass’y. Terminals 1) After remove the panel plate following procedure 1, remove the hex nut fixing the fan and then remove the fan. 2) Unfix the hooks and Two reactors then open the electronic Compressor and liquid-gas separator...
  • Page 112 3) Disconnect the connector for fan motor from the electronic control board. Fan motor connector 4) Remove the four fixing screws of the fan motor. 5) Then remove the fan Four screws motor. Electrical How to remove the parts electrical parts. Two blue 1) After finish work of wires of...
  • Page 113 3) Pull out connectors of the compressor top temp. sensor, condenser coil temp. sensor(T3),outdoor ambient temp. sensor(T4) and discharge temp. sensor(T5). Four temp. sensor connectors Grounding screw 4) Remove the grounding screw. 5) Remove the power supply wires(L1,L2,S). 6) Then remove the electronic control box.
  • Page 114 Four-way How to remove the valve four-way valve. The picture of four-way valve may be different from 1) Perform work of the one on your side. item1,2,3. 2) Recover refrigerant Four-way from the refrigerant circuit. valve 3) Remove the screw of Welded the coil and then remove parts...
  • Page 115  MOG-24HDN1-MQOW Part name Procedures Remarks Panel plate How to remove the panel plate. Screws of top panel 1) Stop operation of the air conditioner and turn “OFF” the power breaker. 2) Refer to the right side photos, find out the fixing screws of the panels.
  • Page 116 Screw of the top panel Remove the screws of the front panel, including the fixing screws of motor holder and then remove the front panel. Screws of right rear plate Screw of top panel Remove the screws of the right side plate and Screws of remove the right side front panel...
  • Page 117 Fan ass’y How to remove the fan LAK board(optional) Electronic control box ass’y. 1) After remove the panel plate following procedure 1, remove the hex nut fixing the fan and then remove the fan. Accumulator Three reactors Compressor and liquid-gas separator Nut fixing the fan 2) Unfix the hooks and then open the electronic...
  • Page 118 Disconnect the connector for fan motor from the electronic control board. Fan motor connector Remove the four fixing screws of the fan motor. 5) Then remove the fan Four screws motor. Electrical How to remove the parts electrical parts. 1) After finish work of item 1 and item 2, remove the three connectors for the compressor and the...
  • Page 119 3) Pull out connectors of the compressor top temp. sensor, condenser coil temp. sensor(T3),outdoor ambient temp. sensor(T4) and discharge temp. sensor(T5). Four temp. sensor connectors 4) Remove the grounding screw. Grounding screw 5) Remove the power supply wires(L1,L2,S). 6) Then remove the electronic control box.
  • Page 120 Four-way How to remove the valve four-way valve. The picture of four-way valve may be different from 1) Perform work of the one on your side. item1,2,3. 2) Recover refrigerant Four-way from the refrigerant circuit. valve 3) Remove the screw of Welded the coil and then remove parts...

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Msv1-09hrfn1-mt0wMsv1-24hrdn1-mq0wMsv1-12hrfn1-mt0wMsv1-18hrdn1-mq0w

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