GREE GMV5E DC INVERTER VRF UNITS SERVICE MANUAL
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Error judgment condition and method:
This code is status code, which means the system has entered into vacuum mode, corresponding
expansion valve and solenoid valve will open.
Possible reason
：——
Troubleshooting:
status code, no troubleshooting.
2.2.4.8
“AH” Heating status
Error display:
ODU mainboard
will display
Error judgment condition and method:
This code is status code, which means the system has entered into heating mode for operation.
Possible reason
：——
Troubleshooting:
status code, no troubleshooting.
2.2.4.9
“AC” Cooling status
Error display:
ODU mainboard
will display
Error judgment condition and method:
This code is status code, which means the system has entered into cooling mode for operation.
Possible reason
：——
Troubleshooting:
status code, no troubleshooting.
2.2.4.10
“AF” Supply air status
Error display:
ODU mainboard
will display
Error judgment condition and method:
This code is status code, which means the system has entered into supply air mode, at this time, all
IDUs can only be operated under supply air mode.
Possible reason
：——
Troubleshooting:
status code, no troubleshooting.
2.2.4.11
“AE” Manual refrigerant charging status
Error display:
ODU mainboard
will display
Error judgment condition and method:
This code is status code, which means the system adopts manual refrigerant charging status.
Possible reason
：——
Troubleshooting:
status code, no troubleshooting.
