Gree CF01000730, Service Manual

Page: 84 / 129

GREE Duct type split Air conditioner Inverter Series
82
Display
code
Content
Display
code
Content
Display
code
Content
CL Low rated capacity CF
Malfunction of main control
unit
CJ Address shock of syste
CU
Communication
malfunction between
indoor unit receiving
lamp board
Cb
Distribution overflow of Ip
address
A0 Debugging for unit
A1
Operational
parameter inquiry of
compressor
A2 Refrigerant recovery A3 Defrosting
A4 Oil return A5 On-line test A6
Heat pump function
setting
A7 Quit mode setting A8
Vacuum pump
mode
A9 IPLV test
AA
EU AA class energy
efficiency test mode
AH Heating AL
Charge refrigerant
automatically
AE
Charge refrigerant by
hand
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
outdoor unit
n4
Limit setting for the maximum
ouput capacity
n6
Engineering series
number inqury for indoor
unit
n7 Malfunction inquiry n8 Parameters inquiry nA Heat pump unit
nH Heating only model nC Cooling only model nE Negative code
nF Fan model
(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.