Gree GEH09AA-K6DNA1F Service Manual page 46

Service Manual
Display Method of
Malfunction
No.
Name
Compressor
intermediate
26
frequence in
test state
Overcurrent
protection of
26 phase
current for
compressor
Charging
malfunction
27
of capacitor
Malfunction
of module
28
temperature
sensor circuit
Module high
29 temperature
protection
Overload
30 protection for
compressor
IPM
31
protection
Internal motor
32 (fan motor) do
not operate
Installation and Maintenance
Indoor Unit
Dual-8
A/C status
Code
Display
P3
During cooling and drying
operation, compressor will stop
while indoor fan will operate;
P5
During heating operation, the
complete unit will stop
operation.
During cooling and drying
operation, compressor will stop
PU while indoor fan will operate;
During heating operation, the
complete unit will stop
During cooling and drying
operation, compressor will stop
P7 while indoor fan will operate;
During heating operation, the
complete unit will stop
During cooling operation,
compressor will stop while
P8 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;
H3
During heating operation, the
complete unit will stop
operation.
During cooling and drying
operation, compressor will stop
while indoor fan will operate;
H5
During heating operation, the
complete unit will stop
operation.
Internal fan motor, external fan
motor, compressor and electric
H6 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.
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