Gree GWH09AGA-K6DA1A Service Manual page 70

Service Manual
Malfunction
No.
Name
Compressor
intermediate
26
frequence in
test state
Overcurrent
protection of
27 phase
current for
compressor
Charging
malfunction
28
of capacitor
Malfunction
of module
29
temperature
sensor circuit
Module high
30 temperature
protection
Overload
31 protection for
compressor
IPM
32
protection
Internal motor
33 (fan motor) do
not operate
Installation and Maintenance
Display Method of Indoor Unit
Indicator Display (during
blinking, ON 0.5s and OFF
Dual-8
0.5s)
Code
Operation Cool Heating
Display
Indicator Indicator Indicator
P3
P5
PU
P7
P8
H3
H5
H6
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.
Internal fan motor, external fan motor, compressor
and electric heater stop operation,guide louver
stops at present location.
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. Bad contact of DC motor
feedback terminal.
2. Bad contact of DC motor
control end.
3. Fan motor is stalling.
4. Motor malfunction.
5. Malfunction of mainboard rev
detecting circuit.
67