Gree GMV5 - Page 168

GREE Photovoltaic Direct-driven Inverter Multi VRF Units
164
Possible reason
：
——
Troubleshooting:
status code, no troubleshooting.
2.3.4.3 “A3” Defrosting status
Error display:
ODU mainboard, IDU wired controller and IDU receive light board will
display
Error judgment condition and method:
This code is status code, which means the system has entered into defrosting status, the operating
IDU fan will stop for 5-10 minutes.
Possible reason
：
——
Troubleshooting:
status code, no troubleshooting.
2.3.4.4 “A4” Oil return status
Error display:
ODU mainboard, IDU wired controller and IDU receive light board will
display
Error judgment condition and method:
This code is status code, which means the system has entered into oil return status, if returning oil
under heating mode, the operating IDU will stop for 5-10 minutes.
Possible reason
：
——
Troubleshooting:
status code, no troubleshooting.
2.3.4.5 “A6” Cooling and heating function setting 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 and heating function
setting status. At this time, cooling & heating mode (nA), cooling only mode (nC), heating only mode (nH)
and supply air mode (nF) are selectable.
Possible reason
：
——
Troubleshooting:
status code, no troubleshooting.
2.3.4.6 “A7” Quiet mode setting status
Error display:
ODU mainboard will display
Error judgment condition and method:
This code is status code, which means the system has entered into quiet mode setting status.
Possible reason
：
——
Troubleshooting:
status code, no troubleshooting.