Gree GWH09QB-K3DNA6G Service Manual page 52

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