Gree DUCT09HP230V1BD - Page 36

34
Installation and Maintenance
Service Manual
NO.
Malfunction
Name
Display Method of Indoor Unit
A/C status Possible Causes
Dual-8
Code
Display
Indicator Display (during
blinking, ON 0.5s and OFF
0.5s)
Operation
Indicator
Cool
Indicator
Heating
Indicator
33
Internal motor
(fan motor) do
not operate
H6
Internal fan motor, external fan motor, compressor and
electric heater stop operation,guide louver stops at
present location.
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.
34
Desynchro-
nizing of
compressor
H7
During cooling and drying
operation, compressor will stop
while indoor fan will operate;
During heating operation, the
complete unit will stop operation.
Refer to the malfunction
analysis (IPM protection, loss
of synchronism protection and
overcurrent protection of phase
current for compressor.
35
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.
Refer to the malfunction analysis
36
Outdoor DC
fan motor
malfunction
L3
Outdoor DC fan motor malfunction lead to compressor
stop operation,
DC fan motor malfunction or
system blocked or the connector
loosed
37
power
protection
L9
compressor stop operation and Outdoor fan motor
will stop 30s latter , 3 minutes latter fan motor and
compressor will restart
To protect the electronical
components when detect high
power
38
Indoor unit
and outdoor
unit doesnt
match
LP compressor and Outdoor fan motor cant work
Indoor unit and outdoor unit doesnt
match
39
Failure start-
up
LC
During cooling and drying
operation, compressor will stop
while indoor fan will operate;
During heating operation, the
complete unit will stop operation.
Refer to the malfunction analysis
40
Normal
communica-
tion
41 Defrosting
OFF 3S
and blink
once
(during
blinking,
ON 10s
and OFF
0.5s)
Defrosting will occur in heating
mode. Compressor will operate
while indoor fan will stop
operation.
Its the normal state