328 080000 01
39
Specifications subject to change without notice.
TROUBLESHOOTING (CONT)
NO.
MALFUNCTION
NAME
Display Method of Indoor Unit
Display Method of
Outdoor Unit
AC 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
Operation
Indicator
Cool
Indicator
Heating
Indicator
Yellow
Indicator
Red
Indicator
Green
Indicator
34
System is
abnormal
H4
OFF 3S:
blinks 4
times
OFF 1S:
blinks
6 times
During the cooling and drying
operation, the compressor stops
while the indoor fan operates.
During the heating operation, the
unit stops operating.
Refer to the malfunction analysis
(overload, high temperature resistant)
35
IPM protection
H5
OFF 3S:
blinks
5 times
OFF 1S:
blinks
4 times
During the cooling and drying
operation, the compressor stops
while indoor fan will operates. During
the heating operation, the entire unit
stops operating.
Refer to the malfunction analysis (IPM
protection, loss of synchronism protection
and overcurrent protection of the
compressor's phase current.
36
Module
temperature is too
high
H5
OFF 3S:
blinks
5 times
OFF 1S:
blinks
10 times
37
Internal motor (fan
motor) do not
operate
H6
OFF 3S:
blinks
11 times
The internal fan motor, external fan
motor, compressor and electric
heater stop operating. The guide
louver stops.
1.
Bad contact of the DC motor feedback
terminal.
2.
Bad contact of the DC motor control
end.
3.
Fan motor is stalling.
4.
Motor malfunction.
5.
Malfunction of the mainboard rev
detecting circuit.
38
Desynchronizing
of compressor
H7
OFF 3S:
blinks
7 times
During the cooling and drying
operation, the compressor stops
while the indoor fan operates.
During the heating operation, the
entire unit stops operating.
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:
blinks
6 times
OFF 1S:
blink
14 times
During the cooling and drying
operation, the compressor stops
while the indoor fan operates.
During the heating operation, the
complete unit stops operating.
Refer to the malfunction analysis
40
Outdoor DC fan
motor malfunction
L3
OFF 3S:
blinks 23
times
OFF 1S:
blinks
14 times
Outdoor DC fan motor malfunction
leads to a compressor malfunction
DC fan motor malfunction or system
blocked or the connector loosed
41
Power Protection
L9
OFF 3S:
blinks
20 times
OFF 1S:
blinks
9 times
Compressor stop operation and
outdoor fan motor stop 30s later, 3
minutes later the fan motor and
compressor restarts
To protect the electrical components
when detect high power
42
Indoor unit and
outdoor unit
doesn't match
LP
OFF 3S:
blinks
19 times
OFF 1S:
blinks
16 times
Compressor and outdoor fan motor
do not work
Indoor unit and outdoor unit does not
match
43
Failure start- up
LC
OFF 3S:
blinks
11 times
During the cooling and drying
operation, the compressor stops
while the indoor fan operates.
During the heating operation, the
entire unit stops operating.
Refer to the malfunction analysis
