GREE Duct type Ducted Type Split Air-Conditioner Units
84
Display
Content
Display
Content
Display
Content
CU
Communication
malfunction between
indoor unit receiving
Cb
Distribution overflow of Ip
address
A0 Debugging for unit
A1
Operational
parameter inquiry of
A2 Refrigerant recovery A3 Defrosting
A4 Oil return A5 On-line test A6
Heat pump function
A7 Quit mode setting A8
Vacuum pump
A9 IPLV test
AA
EU AA class energy
AH Heating AL
Charge refrigerant
AE
Charge refrigerant by
AF Fan blow AJ Cleaning alarm for filter
AP
Startup debugging
confirmation of unit
AU
Long-distance emergency
stop
Ab Emergency stop
Ad Limit opereation n0 SE setting for the operation n1
Defrosting period K 1
setting
n2
Upper limit setting for
the collocation
matching ratio for
indoor unit and
n4
Limit setting for the maximum
ouput capacity
n6
Engineering series
number inqury for indoor
unit
-
-
-
-
(1) “A0” debugging for unit
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. If engineering debugging is not
finished, the unit will display the code, at this time, the unit can’t be started for operation.
Possible reason: the unit is energized for startup for the first time, new main board is replaced for
the unit.
Troubleshooting: refer to the complete unit debugging in related chapter.
(2) “A3” defrosting
Fault display: the main board of outdoor unit and indoor unit will display .
Applicable model: all heat pump models.
Judgment condition and method for the fault
：It is a status code, which means the system has
entered defrosting status, the indoor fan will suspend for 5-10min.
Possible reason: the outside ambient temperature is low, after heating for a long period, frosting at
the outside heat exchanger is quite thick.
Troubleshooting: not faulted.
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