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Heat Controller
A-VMH18DC-1, A-VMH27TC-1, A-VMH36QC-1 service manual
1
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50 pages, 1.85 Mb
Heat
Controller
,
Inc.
•
1900
Wellworth A
ve.
•
Jackson,
MI
49203
•
(517)787-2100
•
www
.heatcontroller
.com
SER
VICE MANU
AL
Inverter Flex Multi-Zone
Ductless Mini Split
Outdoor Section
A-VMH18DC-1
A-VMH27TC-1
A-VMH36QC-1
Contents
Main
CONTENTS
1. General information of Outdoor Units
2Features
3. Dimensions
4. Wiring Diagram
Page
5. Refrigeration Cycle Diagram
8.1 Refrigeration circuit drawing of inverter dual zone: A-VMH18DC-1
INDOOR OUTDOOR
5.2 Refrigeration circuit drawing of inverter tri-zone: A-VMH27TC-1
8.3 Refrigeration circuit drawing of inverter Quad-zone: A-VMH36QC-1
INDOOR OUTDOOR
6. Indoor units combination
6.1 Indoor unit combinations for A-VMH18DC-1
6.2 Indoor unit combinations A-VMH27TC-1
6.3 Indoor unit combinations A-VMH36QC-1
7. Installation Details
7.1 Wrench torque sheet for installation
7.2 Connecting the cables
Pipe length and elevation
7.4 Installation for the first time
Page
Page
7.5 Adding the refrigerant due to loss of charge
7.6 Replacing the indoor unit
Page
7.7 Replacing the outdoor unit
Page
8. Electronic control function
8.1 Abbreviations
8.2 Electric control working environment.
8.3 Outdoor units digital display
8.4 Outdoor unit point check function
8.4.1 Frequency of compressor:
8.4.2 Running mode:
8.4.3 Capacity demand: Cooling mode
Heating mode
Note: The capacity is just for reference.
8.5 Protection
Page
Page
9. Troubleshooting
9.1 Indoor Mini-Split error code explanations:
9.2 Outdoor unit error code explanation:
9.3 Trouble shooting
9.3.1.2 Indoor / outdoor units communication error
Yes
A:
SEE A
Page
Page
9.3.1.5 Indoor fan speed has been out of control(AC fan motor)
Replace indoor PCB.
Yes
freely? Correct the connections per wiring diagram.
Page
Check the connections between temperature sensor and PCB. Are the connections good?
Check the resistance value of the sensor via Appendix 1, is it normal? No
9.3.2 Outdoor unit trouble shooting
9.3.2.2 Voltage protection (ODU E5)
Page
9.3.2.4 Temperature protection of compressor discharge (ODU P0)
9.3.2.5 Temperature protection of compressor top (ODU P0)
9.3.2.6 High pressure protection (ODU P1) (Only for A-VMH36QC-1)
9.3.2.7 Low pressure protection (ODU P2) (Only for A-VMH36QC-1)
9.3.2.8 Current protection of compressor (ODU P3)
9.3.2.9 IPM module compressor (ODU P4)
Page
9.3.2.11 High PFC module protection (ODU P6) (Only for A-VMH36QC-1)
Appendix 1 Temperature Sensor Resistance Value Table (--K) Use appendix 4 to convert C to F.
Appendix 2
+
~
_
~
+
- ~
~ + - ~
Page
Appendix 5: