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
43
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.
44
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.
45
Malfunction
of detecting
plate(WIFI)
JF
Loads operate normally, while the
unit can’t be normally controlled by
APP.
1.Main board of indoor unit is
damaged;
2.Detection board is damaged;
3.The connection between indoor
unit and detection board is not good;
46 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
Replace outdoor control panel AP1
or Reactor
47
Refrigerant
recovery
mode
F0
Refrigerant recovery. The
Serviceman operates it for
maintenance.
42
