Gree GWH12ACC-K6DNA1D Service Manual page 62

Service Manual
Dual-8
Malfunction
No.
Code
Name
Display
Compressor
intermediate
26 P3
frequence in
test state
Overcurrent
protection of
27 phase P5
current for
compressor
Charging
malfunction
28 PU
of capacitor
Malfunction
of module
29 P7
temperature
sensor circuit
Module high
30 temperature P8
protection
Overload
31 protection for H3
compressor
IPM
32 H5
protection
Malfunction
of zero-cross
33 U8
detection
circuit
Installation and Maintenance
Display Method of Indoor Unit
Indicator Display (during
blinking, ON 0.5s and OFF
0.5s)
operation Cool Heating
Indicator Indicator Indicator
A/C status
During cooling and drying
operation, compressor will stop
while indoor fan will operate;
During heating operation, the
complete unit will stop operation.
During cooling and drying
operation, compressor will stop
while indoor fan will operate;
During heating operation, the
complete unit will stop
During cooling and drying
operation, compressor will stop
while indoor fan will operate;
During heating operation, the
complete unit will stop
During cooling operation,
compressor will stop while indoor fan will
operate; During heating operation, the complete
unit will stop
During cooling and drying
operation, compressor will stop
while indoor fan will operate;
During heating operation, the
complete unit will stop operation.
During cooling and drying
operation, compressor will stop
while indoor fan will operate;
During heating operation, the
complete unit will stop operation.
The complete unit stops
Possible Causes
Showing during middle cooling or middle
heating test
Refer to the malfunction analysis (IPM
protection, loss of synchronism protection and
overcurrent protection of phase current for
compressor.
Refer to the part three—charging malfunction
analysis of capacitor
Replace outdoor control panel AP1
After the complete unit is de-energized for
20mins, check whether the thermal grease on
IPM Module of outdoor control panel AP1 is
sufficient and whether the radiator is inserted
tightly. If its no use, please replace control panel
AP1.
1. Wiring terminal oVC-CoMP is loosened. In
normal state, the resistance for this terminal
should
be less than 1ohm.
2.Refer to the malfunction analysis ( discharge
protection, overload)
Refer to the malfunction analysis (IPM
protection, loss of synchronism protection and
overcurrent protection of phase current for
compressor.
1.Power supply is abnormal;
2.Detection circuit of indoor control mainboard
is abnormal.
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