Gree GWH12AGB-K6DNA1A/O - Page 112

109
Installation and Maintenance
Service Manual
NO.
Malfunction
Name
Display
Method of
Indoor Unit
A/C status Possible Causes
Dual-8
Code
Display
41
Malfunction
of complete
units current
detection
U5
During cooling and drying
operation, the compressor will
stop while indoor fan will operate;
During heating operating, the complete
unit will stop operation.
Theres circuit malfunction on outdoor
units control panel AP1, please replace
the outdoor units control panel AP1.
42
The four-way
valve is
abnormal
U7
If this malfunction occurs during heating
operation, the complete unit will stop
operation.
1.Supply voltage is lower than AC175V;
2.Wiring terminal 4V is loosened or
broken;
3.4V is damaged, please replace 4V.
43
Undened
outdoor unit
error
oE
Cool: compressor and outdoor fan
stops operation, while indoor fan
operates; Heat: compressor, outdoor
fan and indoor fan stop operation.
1. Outdoor ambient temperature
exceeds the operation range of unit (eg:
less than-20oC or more than 60oC for
cooling; more than 30oC for heating);
2. Failure startup of compressor?
3. Are wires of compressor not
connected tightly?
4. Is compressor damaged?
5. Is main board damaged?
44
Anti-freezing
protection for
evaporator
E2
Not the error code. Its the status code
for the operation.
45
Cold air
prevention
protection
E9
Not the error code. Its the status code
for the operation.
46
Refrigerant
recovery
mode
Fo
Refrigerant recovery. The Serviceman
operates it for maintenance
47
Malfunction
of detecting
plate(WIFI)
JF
Loads operate normally, while the unit
cant be normally controlled by APP.
1. Main board of indoor unit is
damaged;
2. Detection board is damaged;
3. The connection between indoor unit
and detection board is not good;
48
PFC
protection
HC
During cooling and drying
operation, compressor will stop
while indoor fan will operate;
During heating operation, the
complete unit will stop operation
Replace outdoor control panel AP1 or
Reactor