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
45
Malfunction
of complete
units current
detection
U5
During cooling and drying
operation, the compressor will
stop while indoor fan will operate;
During heating operating, the complete unit
will stop operation.
Theres circuit malfunction on outdoor units
control panel AP1, please replace the
outdoor units control panel AP1.
46
The four-way
valve is
abnormal
U7
If this malfunction occurs during heating
operation, the complete unit will stop
operation.
1.Supply voltage is lower than AC175V;
2.Wiring terminal 4V is loosened or broken;
3.4V is damaged, please replace 4V.
47
Frequency
limiting
(power)
48
Compressor
is open-
circuited
49
The
temperature
for turning
on the unit is
reached
50
Frequency
limiting
(module
temperature)
51
Malfunction
of detecting
plate(WIFI)
JF
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