Troubleshooting; Exception Analyzing And Troubleshooting; “D1” Indoor Circuit Board Error - Gree FGR25Pd/DNa-X Service Manual

Display
Content
code
Refrigerant-charging
UE
is invalid
Driven
communication
C3 malfunction between
main board and
inverter compressor
Alarming due to
C6 wrong quanity of
outdoor unit
Energycy status of
CA
module
CL Low rated capacity
Communication
malfunction between
CU
indoor unit receiving
lamp board
Operational
A1 parameter inquiry of
compressor
A4 Oil return
A7 Quit mode setting
EU AA class energy
AA
efficiency test mode
Charge refrigerant by
AE
hand
Startup debugging
AP
confirmation of unit
Ad Limit opereation
Upper limit setting for
the collocation
n2 matching ratio for
indoor unit and
outdoor unit
n7 Malfunction inquiry
nH Heating only model
nF Fan model

3 Troubleshooting

3.1 Exception Analyzing and Troubleshooting（IDU）
3.1.1 "d1" Indoor circuit board error
Error display: IDU wired controller and IDU receive light board will display
Error judgment condition and method:
Check if the reading of address chip and memory chip of IDU mainboard is normal. If the data of
address chip and memory chip cannot be read, it is abnormal
Possible reason：
■Address chip is abnormal
■Memory chip is abnormal. Replace main control board directly
Troubleshooting:
Duct type split Air conditioner Inverter Series
Display
Content
code
Communication malfunction
for indoor unit, outdoor unit
C0
and wired controller of indoor
Malfunction of indoor
C4
unit-lacking
Emergency status of
C8
compressor
CH High rated capacity
Malfunction of main control
CF
Distribution overflow of Ip
Cb
address
A2 Refrigerant recovery
A5 On-line test
Vacuum pump
A8
mode
AH Heating
AF Fan blow
Long-distance emergency
AU
n0 SE setting for the operation
Limit setting for the maximum
n4
ouput capacity
n8 Parameters inquiry
nC Cooling only model
85
Display
code
C2
unit
C5
C9
CC
CJ
unit
A0
A3
A6
A9
AL
AJ
Ab
stop
n1
n6
nA
nE
Content
Driven communication
malfunction between
main board and inverter
compressor
Alarming due to
engineering series
number shock of indoor
unit
Emergency status of fan
No malfunction of main
control unit
Address shock of syste
Debugging for unit
Defrosting
Heat pump function
setting
IPLV test
Charge refrigerant
automatically
Cleaning alarm for filter
Emergency stop
Defrosting period K 1
setting
Engineering series
number inqury for indoor
unit
Heat pump unit
Negative code