ƲƵ
No.
Malfunction
Name
Display Method of Indoor Unit
Display Method of Outdoor
Unit
A/C
Status
Possible
Causes
Dual 8
Code
Display
Indicator Display (during
blinking, ON 0.5s and OFF
0.5s)
Indicator has 3 kinds of display
status and during blinking, ON
0.5s and OFF 0.5s
Oper-
ation
Indicator
Cool
Indica-
tor
Heat-
ing
Indica-
tor
Yellow
Indica-
tor
Red
Indica-
tor
Green
Indicator
34
System is
abnormal
H4
OFF 3S
and
blink
4 times
OFF 1S
and
blink
6 times
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
(overload, high temperature
resistant)
35
IPM
protection
H5
OFF 3S
and
blink
5 times
OFF 1S
and
blink
4 times
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.
36
Module
temperature
is too high
H5
OFF 3S
and
blink
5 times
OFF 1S
and
blink
10
times
37
Internal motor
(fan motor) do
not operate
H6
OFF 3S
and
blink
11 times
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.
38
Desynchronizing
of
compressor
H7
OFF 3S
and
blink
7 times
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.
39
PFC
protection
HC
OFF 3S
and
blink
6 times
OFF 1S
and
blink
14
times
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
Outdoor DC
fan motor
malfunction
L3
OFF 3S
and
blink
23 times
OFF 1S
and
blink
14
times
Outdoor DC fan motor
malfunction lead to compressor
stop operation,
DC fan motor malfunction or
system blocked or the connector
loosed
41
power
protection
L9
OFF 3S
and
blink
20
times
OFF 1S
and
blink
9 times
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
42
Indoor unit
and outdoor
unit doesn’t
match
LP
OFF 3S
and
blink
19 times
OFF 1S
and
blink
16
times
compressor and Outdoor fan
motor can’t work
Indoor unit and outdoor unit
doesn’t
match
43
Failure startup
LC
OFF 3S
and
blink
11
times
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