Table Of Contents - Heat Controller A-VMH18DC-1 Service Manual

Table of Contents

Table Of Contents2
General Information Of Outdoor Units3
Features4
Dimensions5
Wiring Diagram6
A-Vmh18Dc-16
A-Vmh27Tc-16
A-Vmh36Qc-17
Refrigeration Cycle Diagram8
Refrigeration Circuit Drawing Of Inverter Dual Zone8
Refrigeration Circuit Drawing Of Inverter Tri-Zone8
Refrigeration Circuit Drawing Of Inverter Quad-Zone9
Indoor Unit Combinations For A-Vmh18Dc-110
Indoor Unit Combinations A-Vmh27Tc-110
Indoor Unit Combinations A-Vmh36Qc-110
Installation Details11
Wrench Torque Sheet For Installation11
Connecting The Cables11
Pipe Length And Elevation11
Installation For The First Time12
Air Purging With Vacuum Pump12
Air Purging By Refrigerant13
Adding The Refrigerant If The Pipe Length >(5M)16.5Ft14
Purge The Air From The Charge Hose14
Adding The Refrigerant Due To Loss Of Charge15
Replacing The Indoor Unit16
Collecting The Refrigerant Into The Outdoor Unit16
Air Purging By The Refrigerant17
Check The Gas Leakage17
Replacing The Outdoor Unit18
Evacuation For The Whole System18
Refrigerant Charging19
Electronic Control Function20
Abbreviations20
Indoor Ambient Temperature20
Electric Control Working Environment20
Frequency Of Compressor21
Running Mode21
Capacity Demand21
Protection22
Number Of Indoor Units22
Opening Degree Of Electronic Expansion Valve22
Low Voltage Protection22
Compressor Current Limit Protection23
Cooling Mode23
Heating Mode23
Indoor / Outdoor Units Communication Protection24
High Condenser Coil Temp. Protection24
Outdoor Unit Anti-Freezing Protection24
Oil Return24
Indoor Mini-Split Error Code Explanations25
Indoor Ceiling Cassette Error Codes25
Troubleshooting25
Outdoor Unit Error Code Explanation26
Indoor Unit Trouble Shooting27
Indoor Eeprom Malfunction27
Indoor / Outdoor Units Communication Error28
Zero-Crossing Signal Error30
Indoor Fan Speed Has Been Out Of Control(Dc Fan Motor)30
Dc Motor Voltage Input And Output30
Indoor Fan Speed Has Been Out Of Control(Ac Fan Motor)31
Open Or Short Circuit Of Temperature Sensor32
Full-Water Malfunction (For Ceiling Cassette)32
Outdoor Temp. Too Low Protection(Optional For Some Models)33
Outdoor Unit Trouble Shooting33
Outdoor Eeprom Malfunction (Odu E0)33
Voltage Protection (Odu E5)34
Communication Malfunction Between Ipm Board And Outdoor Main Board35
Temperature Protection Of Compressor Discharge (Odu P0)36
Temperature Protection Of Compressor Top (Odu P0)37
High Pressure Protection (Odu P1) (Only For A-Vmh36Qc-1)38
Low Pressure Protection (Odu P2)39
Current Protection Of Compressor (Odu P3)40
Ipm Module Compressor (Odu P4)41
High Temperature Protection Of Condenser (Odu P6)42
High Pfc Module Protection (Odu P6) (Only For A-Vmh36Qc-1)43
Temperature Sensor Resistance Value Table44
Reference Voltage Data46
Check The Diode Bridge Component46
Celsius To Fahrenheit Conversion Chart47
Compressor Checking48
Fan Motor49