Related Manuals for Century B-VMH36SD-1
Summary of Contents for Century B-VMH36SD-1
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Page 1: Service Manual
Service Manual VMH 9/12/18/24 SU Series VMH 30/36 SD Series Inverter Single Zone Ductless Mini-Split www.marsdelivers.com... -
Page 2: Table Of Contents
CONTENTS 1. Precaution ......................1 1.1 Safety Precaution ..................1 1.2 Warning ......................1 2. Part Names and Functions ................3 2.1 Model Names of Indoor/Outdoor Units ............3 2.2 Part Names of Indoor/Outdoor Units ............4 3. Dimension ......................5 3.1 Indoor Unit .................... -
Page 3: Precaution
Service Manual - VMH 9/12/18/24 SU & VMH30/36S D Series 1. Precaution For installation, always contact the dealer or an authorized service center. Do not install this product on a 1.1 Safety Precaution defective installation stand. To prevent injury and property ... - Page 4 Service Manual - VMH 9/12/18/24 SU & VMH30/36S D Series Stop operation and close the window Do not install the product where in storm or hurricane. If possible, the noise or hot air from the remove the product from the window outdoor unit could affect before the hurricane arrives.
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Page 5: Part Names And Functions
Do not use the remote if the batteries have leaked. 2. Part Names And Functions 2.1 Model Names of Indoor/Outdoor units Outdoor units Series Capacity Indoor units B-VMH09SU-1 A-VMH09SU-1 B-VMH12SU-1 A-VMH12SU-1 B-VMH18SU-1 A-VMH18SU-1 Inverter B-VMH24SU-1 A-VMH24SU-1 B-VMH30SD-1 A-VMH30SD-1 B-VMH36SD-1 A-VMH36SD-1... -
Page 6: Part Names Of Indoor/Outdoor Units
Service Manual - VMH 9/12/18/24 SU & VMH30/36S D Series 2.2 Part names of Indoor/Outdoor units... -
Page 7: Dimension
Service Manual - VMH 9/12/18/24 SU & VMH30/36S D Series 3. Dimension 3.1 Indoor Unit Model 32.9in 7.8in 11.0in B-VMH09SU-1 (835mm) (198mm) (280mm) B-VMH12SU-1 39.0in 8.6in 12.4in B-VMH18SU-1 (990mm) (218mm) (315mm) B-VMH24SU-1 46.7in 10.2in 13.5in B-VMH30SD-1 (1186mm ) (258mm) (343mm) B-VHH36SD-1... - Page 8 Service Manual - VMH 9/12/18/24 SU & VMH30/36S D Series B-VMH09SU-1, B-VMH12SU-1 B-VMH18SU-1 B-VMH24SU-1 B-VMH30SD-1, B-VMH36SD-1...
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Page 9: Outdoor Unit
Service Manual - VMH 9/12/18/24 SU & VMH30/36S D Series 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 W in(mm) D in(mm) -
Page 10: Refrigerant Cycle Diagram
Service Manual - VMH 9/12/18/24 SU & VMH30/36S D Series 4. Refrigerant Cycle Diagram INDOOR OUTDOOR Electronic CAPILIARY TUBE CAPILIARY TUBE expansion valve LIQUID SIDE 2-WAY VALVE T3 Condenser temp. sensor HEAT EXCHANGE HEAT (EVAPORATOR) T4 Ambient T1 Room temp. EXCHANGE temp. -
Page 11: Wiring Diagram
(24.6ft) (82.0ft) (213ft) (0.32oz/ft) B-VMH36SD-1 The cable size and the current of the fuse or switch are determined by the maximum current indicated on the nameplate which is located on the side panel of the unit. Please refer to the nameplate... -
Page 12: Initial Installation
Service Manual - VMH 9/12/18/24 SU & VMH30/36S D Series 6.4 Initial Installation 5) Evacuate for 30 minutes and check that micron gauge reads <500 microns. If not, it Air and moisture in the refrigerant system have should be pumped 20 minutes more. If the undesirable effects as below: pressure can’t achieve <500 microns after ... -
Page 13: Re-Installation If The Indoor Unit Has Been Repaired
Service Manual - VMH 9/12/18/24 SU & VMH30/36S D Series 3) Put the charging cylinder onto the electronic 5) Operate the vacuum pump to evacuate. scale and record the weight. 6) Evacuate for 30 minutes and check 4) Operate the air conditioner in the cooling whether the compound meter indicates mode. - Page 14 Service Manual - VMH 9/12/18/24 SU & VMH30/36S D Series Procedure: Procedure: 1) Confirm that both the 2-way and 1) Connect the charge hose to the charging 3-way valves are set to the opened cylinder, open the 2-way valve and the 3- position.
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Page 15: Operation Characteristics
Service Manual - VMH 9/12/18/24 SU & VMH30/36S D Series 7. Operation Characteristics Temperature Cooling operation Heating operation Drying operation Mode 17℃～32℃ 0℃～30℃ 10℃～32℃ Room temperature (62℉～90℉) (32℉～86℉) (50℉～90℉) °C °C ～50 °F °F ～122 Outdoor temperature °C °C °C °C ～30 ～50... -
Page 16: Electronic Function
Service Manual - VMH 9/12/18/24 SU & VMH30/36S D Series 8. Electronic Function 8.1 Abbreviation T1: Indoor room temperature T2: Coil temperature of evaporator T3: Coil temperature of condenser T4: Outdoor ambient temperature TP: Compressor discharge temperature 8.2 Display function 8.2.1 Icon explanation on indoor display board. -
Page 17: Main Protection
Service Manual - VMH 9/12/18/24 SU & VMH30/36S D Series 8.3.7 Compressor preheating functions 8.3 Main Protection Preheating permitting condition: 8.3.1 Three minutes delay at restart for When T4 (outdoor ambient temperature) ＜3°C compressor (37.4°F), the preheating function will be Less than one minute delay for the first time activated. -
Page 18: Operation Modes And Functions
Service Manual - VMH 9/12/18/24 SU & VMH30/36S D Series medium, low and auto. 8.4 Operation Modes and Functions When the setting temp. is reached, if the 8.4.1 Fan mode compressor stops running, indoor fan motor 1) Outdoor fan and compressor stop. will run in Minimum speed or set speed. - Page 19 Service Manual - VMH 9/12/18/24 SU & VMH30/36S D Series Auto fan action in heating mode: When the AC runs in mute mode, the compressor will run with low frequency. When T 1 - T d + Δ T the current is more than set value, the current protection function will be activated and the compressor will stop.
- Page 20 Service Manual - VMH 9/12/18/24 SU & VMH30/36S D Series In forced auto, forced cooling or any other (ΔT =T1-Ts). operation mode, pressing touch button will turn T1-Ts off the machine. Cooling 8.4.6.2 In forced operation mode, all general protections and remote control are available. Fan only 8.4.6.3 Operation rules: Forced cooling mode:...
- Page 21 Service Manual - VMH 9/12/18/24 SU & VMH30/36S D Series 8.4.10 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 sound for two seconds.
- Page 22 Service Manual - VMH 9/12/18/24 SU & VMH30/36S D Series When the AC enters into the information inquiry status, it will display the following code values during the next 25s Enquiry Display value Meaning Remark information T1,T2,T3,T4, -1F,-1E,-1d,-1c,- -25,-24,-23,-22,-21,-2 1. Display temperature is actual value. 2.
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Page 23: Troubleshooting
Service Manual - VMH 9/12/18/24 SU & VMH30/36S D Series 9. Troubleshooting Safety An electric charge is still kept in capacitors even when the power supply is shut off. Do not forget to discharge the electricity in capacitor. Electrolytic Capacitors (HIGH VOLTAGE! CAUTION!) For other models, please connect discharge resistance (approx.100Ω... -
Page 24: Indoor Unit Error Display
Service Manual - VMH 9/12/18/24 SU & VMH30/36S D Series 9.1 Indoor Unit Error Display Operation Timer lamp Display LED STATUS lamp ☆ 1 time Indoor unit EEPROM parameter error Indoor / outdoor units communication error ☆ 2 times ☆ 3 times Zero-crossing signal detection error ☆... -
Page 25: Outdoor Unit Error Display
Service Manual - VMH 9/12/18/24 SU & VMH30/36S D Series 9.2 Outdoor Unit Error Display A-VMH09SU-1, A-VMH12SU-1, A-VMH18SU-1 290-330VDC standby 210-300VDC running connect to the DR module bridge connect to reactance connect to earth fuse 250V 30A [V1.8] 2015-01-16 CN22 C N6 R1 41 C N6 -1... - Page 26 Service Manual - VMH 9/12/18/24 SU & VMH30/36S D Series A-VMH24SU-1, A-VMH30SD-1, A-VMH36SD-1 Connect to the Indoor evap.pipe out temp. sensor T2B-A、T2B-B、T2B-C、T2B-D、T2B-E external drive DC fan 6 5 4 3 2 1 motor connector Electric Expansion Electric Expansion Electric Expansion Electric Expansion Electric Expansion testPort...
- Page 27 Service Manual - VMH 9/12/18/24 SU & VMH30/36S D Series IPM Board connect to DC fan motor TO MAIN 0VAC (standby) CN19 CN55 10-200VAC (running) EU-KFR105W/BP2T3N1-350(767).D.13.MP2-1 202302141237 IPM2 CN57 Debug connect to the compressor 0VAC (standby) 10-200VAC (running) CAPACITOR Voltage IPM1 290-330VDC (standby) 210-300VDC (Running)
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Page 28: Diagnosis And Solution
Service Manual - VMH 9/12/18/24 SU & VMH30/36S D Series 9.3 Diagnosis and Solution 9.3.1 EEPROM parameter error diagnosis and solution(E0/F4) E0/F4 Error Code Malfunction conditions Indoor or outdoor PCB main chip does not receive feedback from EEPROM chip. Installation error Possible causes ●... - Page 29 Service Manual - VMH 9/12/18/24 SU & VMH30/36S D Series 9.3.2 Indoor / outdoor unit’s communication diagnosis and solution(E1) Error Code Malfunction condition Indoor unit does not receive the feedback from outdoor unit during 110 seconds and this condition happens four times continuously. Possible causes Wiring error ●...
- Page 30 Service Manual - VMH 9/12/18/24 SU & VMH30/36S D Series Remark: Use a multimeter to test the DC voltage between 2 port and 3 port of outdoor unit. The red pin of multimeter connects with 2 port while the black pin is for 3 port. When AC is running normal, the voltage will move alternately between -25V to 25V.
- Page 31 Service Manual - VMH 9/12/18/24 SU & VMH30/36S D Series 9.3.3 Zero crossing detection error diagnosis and solution (E2) Error Code Malfunction conditions When PCB does not receive zero crossing signal feedback for 4 minutes or the zero crossing signal time interval is abnormal. Possible causes Connection error ●...
- Page 32 Service Manual - VMH 9/12/18/24 SU & VMH30/36S D Series 9.3.4 Fan speed has been out of control diagnosis and solution (E3) E3/F5 Error Code Malfunction conditions When indoor fan speed remains too low (300RPM) for certain time, the unit will stop and the LED will display the failure. Possible causes Wiring error ●...
- Page 33 Service Manual - VMH 9/12/18/24 SU & VMH30/36S D Series Index 1: 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.
- Page 34 Service Manual - VMH 9/12/18/24 SU & VMH30/36S D Series 9.3.5 Open circuit or short circuit of temperature sensor diagnosis and solution (E5) E4/E5/F1/F2/F3 Error Code Malfunction conditions If the sampling voltage is lower than 0.06V or higher than 4.94V, the LED will display the failure.
- Page 35 Service Manual - VMH 9/12/18/24 SU & VMH30/36S D Series 9.3.6 Refrigerant Leakage Detection diagnosis and solution (EC) Error Code Define the evaporator coil temp.T2 of the compressor just starts Malfunction conditions running as Tcool. In the beginning 5 minutes after the compressor starts up, if T2 °C( °F) Tcool－35.6...
- Page 36 Service Manual - VMH 9/12/18/24 SU & VMH30/36S D Series 9.3.7 Overload current protection diagnosis and solution (F0) Error Code Malfunction conditions An abnormal current rise is detected by checking the specified current detection circuit. Possible causes Power supply problems. ●...
- Page 37 Service Manual - VMH 9/12/18/24 SU & VMH30/36S D Series 9.3.8 IPM malfunction or IGBT over-strong current protection diagnosis and solution (P0) Error Code Malfunction conditions When the voltage signal that IPM send to compressor drive chip is abnormal, the display LED will show “P0” and AC will turn off. Possible causes Wiring error ●...
- Page 38 Service Manual - VMH 9/12/18/24 SU & VMH30/36S D Series For example: Note: The photos below are only for reference, it may be not be the same as your equipment.
- Page 39 Service Manual - VMH 9/12/18/24 SU & VMH30/36S D Series...
- Page 40 Service Manual - VMH 9/12/18/24 SU & VMH30/36S D Series...
- Page 41 Service Manual - VMH 9/12/18/24 SU & VMH30/36S D Series For 24K~36K: At first test the resistance between all points; U, V, W of IPM and P, N. If any result is 0 or close to 0, the IPM is defective. If OK, please follow the procedure below: Check whether the power Restart the unit when the power voltage is normal...
- Page 42 Service Manual - VMH 9/12/18/24 SU & VMH30/36S D Series 9.3.9 Over voltage or too low voltage protection diagnosis and solution (P1) Error Code An abnormal voltage rise or drop is detected by checking the Malfunction conditions specified voltage detection circuit. Possible causes Power supply problems ●...
- Page 43 Service Manual - VMH 9/12/18/24 SU & VMH30/36S D Series 9.3.10 High temperature protection of IPM module diagnosis and solution (P2) Error Code If the voltage is not 5V, the LED will display the failure. Malfunction conditions Possible causes PCB faulty ●...
- Page 44 Service Manual - VMH 9/12/18/24 SU & VMH30/36S D Series 9.3.11 Inverter compressor drive error diagnosis and solution (P4) Error Code An abnormal inverter compressor drive is detected by a special Malfunction conditions detection circuit, including communication signal detection, voltage detection, compressor rotation speed signal detection and so on.
- Page 45 Service Manual - VMH 9/12/18/24 SU & VMH30/36S D Series 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...
- Page 46 Service Manual - VMH 9/12/18/24 SU & VMH30/36S D Series For 24K~36K: est the resistance between all ports of U, V, W of IPM and P, N. If any result is 0 or close to 0, the IPM is defective. Otherwise, please follow the procedure below: Restart the unit when the Check whether the power power supply is normal...
- Page 47 Service Manual - VMH 9/12/18/24 SU & VMH30/36S D Series 9.3.12 Low pressure protection diagnosis and solution (P6) Error Code Malfunction conditions When the pressure of system reaches a preset value, the low pressure protector will switch off. After the pressure returns to normal, the protection code will disappear.
- Page 48 Service Manual - VMH 9/12/18/24 SU & VMH30/36S D Series 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.(TP) sensor.
- Page 49 Service Manual - VMH 9/12/18/24 SU & VMH30/36S D Series Appendix 1: Temperature Sensor Resistance Value Table for T1,T2,T3,T4 (°C--K) K Ohm K Ohm K Ohm K Ohm °C °F °C °F °C °F °C °F 115.266 12.6431 2.35774 0.62973 108.146 12.0561 2.27249...
- Page 50 Service Manual - VMH 9/12/18/24 SU & VMH30/36S D Series A ppendix 2: Temperature Sensor Resistance Value Table for TP (°C --K) K Ohm K Ohm K Ohm K Ohm °C °F °C °F °C °F °C °F 542.7 68.66 13.59 3.702 511.9...
- Page 51 Service Manual - VMH 9/12/18/24 SU & VMH30/36S D Series 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...
- Page 52 Service Manual - VMH 9/12/18/24 SU & VMH30/36S D Series Appendix 4: Normal voltage of P and N 208-240V (1-phase, 3-phase) 380-420V (3-phase) In standby around 310VDC around 530VDC In operation With partial With fully With passive active PFC active PFC PFC module module module...
- Page 53 Service Manual - VMH 9/12/18/24 SU & VMH30/36S D Series 2. Compressor checking Measure the resistance value of each winding by using the tester. Position Resistance Value DA110S1 DA130M1C- DA250S2C-3 ATM115D43 ATM150D23 TNB306FPG C-30FZ 31FZ UFZ2 MC-L Blue - 0.8Ω 1.77Ω...
- Page 54 Service Manual - VMH 9/12/18/24 SU & VMH30/36S D Series 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...
- Page 55 Service Manual - VMH 9/12/18/24 SU & VMH30/36S D Series 5. Pressure On Service Port Cooling chart: °F ° (23.89) (29.44) (35) (40.56) (46.11) 70/59 10.1 75/63 10.7 80/67 11.2 °F ° (23.89) (29.44) (35) (40.56) (46.11) 70/59 75/63 80/67 °F °...
- Page 56 Service Manual - VMH 9/12/18/24 SU & VMH30/36S D Series 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 57/53 47/43 37/33 27/23...
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Page 57: Disassembly Instructions
Service Manual - VMH 9/12/18/24 SU & VMH30/36S D Series 10 Disassembly Instructions Note: This part is for reference, the photos may have slight difference with your machine. 10.1 Indoor unit Parts name Procedures Remarks Front panel How to remove the front Overview: panel. - Page 58 Service Manual - VMH 9/12/18/24 SU & VMH30/36S D Series How to remove the Electrical Room temp. sensor electrical parts. Grounding screws parts 1) After removing the front panel from procedure 1, pull out the room temp. sensor and evaporator coil sensor.
- Page 59 Service Manual - VMH 9/12/18/24 SU & VMH30/36S D Series How to remove the Evaporator evaporator. 1) After removing the front panel assembly and electrical parts following procedure 1 and procedure 2, remove the pipe holder at the rear side of the unit. 2) Remove the two screws on the evaporator at the...
- Page 60 Service Manual - VMH 9/12/18/24 SU & VMH30/36S D Series How to remove the fan Fan and and motor. motor 1) After removing the evaporator assembly following procedure 1, procedure 2 and procedure 3, remove the three screws attaching the cover. Three screws 2) Remove the screw attaching the motor...
- Page 61 Service Manual - VMH 9/12/18/24 SU & VMH30/36S D Series 10.2 Outdoor unit A-VMH09SU-1, A-VMH12SU-1 Part name Procedures Remarks Panel plate How to remove the panel plate. 1) Stop operation of the Screws of top panel (3 screws, 1 screw is under the big handle) air conditioner and turn “OFF”...
- Page 62 Service Manual - VMH 9/12/18/24 SU & VMH30/36S D Series Fan assembly How to remove the fan ○ assembly. 1) After removing the panel plate following Procedure 1, remove the hex nut fixing the fan and then remove the fan. ○...
- Page 63 Service Manual - VMH 9/12/18/24 SU & VMH30/36S D Series 3) Disconnect the connector for fan ○ motor from the electronic control board. ○ 4) Remove the four mounting screws of the fan motor. Then remove the fan motor. Electrical How to remove the parts electrical parts.
- Page 64 Service Manual - VMH 9/12/18/24 SU & VMH30/36S D Series 3) Pull out connectors of ○ the condenser coil temp. sensor (T3), outdoor ambient temp. sensor (T4) and discharge temp. sensor (TP). ○ 4) Disconnect the electronic expansion valve wire. ○...
- Page 65 Service Manual - VMH 9/12/18/24 SU & VMH30/36S D Series How to remove the Four-way four-way valve. The picture of four-way valve may be different valve from your valve. 1) Perform work of ○ ○ item1, 3. 2) Recover refrigerant from the refrigerant circuit.
- Page 66 Service Manual - VMH 9/12/18/24 SU & VMH30/36S D Series A-VMH18SU-1 Part name Procedures Remarks How to remove the panel Panel plate plate. 1) Stop operation of the 3 screws of top panel air conditioner and turn "OFF" power at the breaker.
- Page 67 Service Manual - VMH 9/12/18/24 SU & VMH30/36S D Series Fan assembly How to remove the fan assembly. ○ 1) After removing the panel plate following Procedure 1, remove the hex nut attaching the fan and then remove the fan. ○...
- Page 68 Service Manual - VMH 9/12/18/24 SU & VMH30/36S D Series ○ 3) Disconnect the connector for fan motor from the electronic control board. ○ 4) Remove the four mounting screws of the fan motor. Remove the fan motor. How to remove the Electrical electrical parts.
- Page 69 Service Manual - VMH 9/12/18/24 SU & VMH30/36S D Series ○ 2) Pull out the two blue ○ wires connected with the four way valve. ○ ○ 3) Pull out connectors of the condenser coil temp. sensor (T3), outdoor ambient temp. sensor (T4) and discharge temp.
- Page 70 Service Manual - VMH 9/12/18/24 SU & VMH30/36S D Series ○ 5) Remove the electric heaters. 6) Remove the grounding screw. 7) Remove the Wires (1,2,3 or L1,L2,S). Then remove the electronic control box. ⑥ ○...
- Page 71 Service Manual - VMH 9/12/18/24 SU & VMH30/36S D Series How to remove the Four-way The picture of four-way valve may be four-way valve. valve different from your equipment. 1) Perform work of item ④ 1, 3. ○ 2) Recover refrigerant from the refrigerant circuit.
- Page 72 Service Manual - VMH 9/12/18/24 SU & VMH30/36S D Series A-VMH30SD-1, A-VMH36SD-1 Part name Procedures Remarks Panel plate How to remove the panel 4 screws of big handle plate. Screws of top panel (3 screws, 1 screw is under the big handle) 1) Stop operation of the air conditioner and turn “OFF”...
- Page 73 Service Manual - VMH 9/12/18/24 SU & VMH30/36S D Series How to remove the fan Fan ass’y assembly. Electronic Control Box 1) After removing the panel plate following procedure 1. Compressor ○ 2) Remove the nut attaching the fan, and remove the fan. ○...
- Page 74 Service Manual - VMH 9/12/18/24 SU & VMH30/36S D Series T3,T4,T5 Pressure Compressor Sensor Switch Wire ○ Electronic 4-way Motor Expansion Valve Wire ○ 4) Disconnect the connector for fan motor from the electronic control board. ○ 5) Remove the four mounting screws of the fan motor, then remove the motor.
- Page 75 Service Manual - VMH 9/12/18/24 SU & VMH30/36S D Series Electrical How to remove the electrical parts. parts ○ 1) After finishing item 1 and item 2, remove the connector for the compressor. ○ 2) Pull out the two blue wires connected with the four way valve.
- Page 76 Service Manual - VMH 9/12/18/24 SU & VMH30/36S D Series ○ 4) Disconnect the pressure switch connector. ○ 5) Disconnect the electronic expansion valve wire from the control board. ○ ○ 6) Remove the ground wires. 7) Remove the wires (1,2,3 or L1,L2,S).
- Page 77 Service Manual - VMH 9/12/18/24 SU & VMH30/36S D Series How to remove the four- Four-way way valve. valve The picture of four-way valve may be different from the one on your side. 1) Perform work of item 1, 3. 2) Recover refrigerant from the refrigerant circuit.
- Page 78 Service Manual - VMH 9/12/18/24 SU & VMH30/36S D Series 1900 Wellworth Ave., Jackson, MI 49203 • Ph. 517-787-2100 • www.marsdelivers.com 12/2016...