Gree UM600PH/A-M, Service Manual

Page: 102 / 121

GREE Duct type Ducted Type Split Air-Conditioner Units
102
Error judgment condition and method
：
It is a status inquiry code, which means the system has
entered malfunction inquiry status. At this time, 5 historical malfunctions can be reviewed, please review
the malfunctions of IDU and ODU separately.
Possible reason
：
——
Troubleshooting
：
——
(36) “n7” parameters inquiry
Error display:
the main board of outdoor unit and indoor unit will display .
Applicable model:
all models.
Error judgment condition and method
：
It is a status inquiry code, which means the system has
entered parameter inquiry status.
Possible reason
：
——
Troubleshooting
：
——
(37) “n8” engineering series number inquiry for indoor unit
Error display: wired controller of IDU will display .
Applicable model: all models.
Error judgment condition and method
：
It is a status inquiry code, which means the system has
entered parameter inquiry status. After entering this function, the wired controller will display the
engineering code of the IDU, meanwhile, the buzzer of the IDU will give out a sound.
Possible reason
：
——
Troubleshooting
：
——
(38) “nA” quantity inquiry status of online IDU
Error display:
the main board of ODU will display .
Applicable model:
all models.
Error judgment condition and method
：
It is a status inquiry code, at this time, the quantity of
online IDU can be inquired.
Possible reason
：
——
Troubleshooting
：
——
(39) “nH” heating only model
Error display: ODU mainboard displays .
Applicable model:
all models.
Condition and method for fault judgement:
The code represents the heating only status, which
prompts that the system has been set as heating only status, the IDU can only conduct heating
operation.