GREE              Duct type Ducted Type Split Air-Conditioner Units 
86 
Applicable model: all models. 
Judgment condition and method for the fault
:It is a status code, which means the system has 
entered cooling mode setting status. 
Possible reason
:—— 
Troubleshooting
:—— 
(8)    “AF” fan blow 
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 fan blow mode, at this time, the indoor unit can only operate in fan blow mode. 
Possible reason
:—— 
Troubleshooting
:—— 
(9)    “AJ” cleaning alarm for filter 
Fault display: the indoor unit will display  . 
Applicable model: all indoor units. 
Judgment condition and method for the fault
:It is a status code, which means cleaning alarm for 
indoor unit filter is due, the filter shall be cleaned, and the period can be set according to actual operation 
circumstances.   
Possible reason:—— 
Troubleshooting
:Clean the filter and remove the alarm, then enter the next usage period. 
(10)   “AU” remote emergency stop 
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 unit is 
controlled in emergency stop status remotely, unless eliminating the status, otherwise, the unit can’t be 
started. 
Possible reason
:—— 
Troubleshooting
:—— 
(11)   “Ab” emergency stop 
Fault display: the main board of outdoor unit and indoor unit will display  . 
Applicable model: all models, but extra wiring is needed.