Gree UML600H/A-MP

GREE Duct type Ducted Type Split Air-Conditioner Units
85
(3) “A4” oil return
Fault display: the main board of outdoor unit and indoor unit will display .
Applicable model: all models.
Judgment condition and method for the fault
：It is a status code, which means the system has
entered oil return status, if the oil returns under heating mode, the indoor fan will suspend for 5-10min.
Possible reason: the load for the air conditioner is low, unit compressor has been operating in low
frequency for a long time.
Troubleshooting: not faulted.
(4) “A6” cooling/heating function setting
Fault display: the main board of outdoor unit will display .
Applicable model: all models.
Judgment condition and method for the fault
：It is a status code, which means the system has
entered cooling/heating function setting status, at this time, choose cooling/heating (nA), cooling only
(nC), heating only (nH) and fan blow (nF) for setting.
Possible reason
：——
Troubleshooting: not faulted.
(5) “A7” quiet mode setting
Fault display: the main board of outdoor unit will display .
Applicable model: all models.
Judgment condition and method for the fault
：It is a status code, which means the system has
entered quiet mode setting status.
Judgment condition and method for the fault
：——
Troubleshooting
：——
(6) “AH” heating
Fault display: the main board of outdoor unit will display .
Applicable model: all models.
Judgment condition and method for the fault
：It is a status code, which means the system has
entered heating mode setting status.
Possible reason
：——
Troubleshooting
：——
(7) “AC” cooling
Fault display: the main board of outdoor unit will display .