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Malfunction
No.
Name
WIFI
7
communication
malfunction
Communication
8
malfunction
Overload
9
malfunction
Overload
10
protection for
compressor
In defect of
11
refrigerant
Indoor ambient
temperature
12
sensor is open/
short-circuited
Indoor
evaporator
13
temperature
sensor is open/
short-circuited
Outdoor
ambient
14
temperature
sensor is open/
short-circuited
Outdoor
condenser
15
temperature
sensor is open/
short-circuited
36
Error
A/C Status
Code
Loads operate normally, while the unit can't
JF
be normally controlled by APP.
During cooling operation,
compressor stops while indoor fan motor
E6
operates. During heating operation, the
complete unit stops.
E8
The entire unit stops.
During cooling and drying
operation, compressor will stop while indoor
H3
fan will operate; During heating operation,
the complete unit will stop operation.
The Dual-8 Code Display will show F0 and
F0
the complete unit stops.
The unit will stop operation as it reaches the
temperature point. During cooling and drying
operation, except IDU fan motor operates,
F1
other loads stop operation; During heating
operation, the heating fan motor operates
according to the conditions of blowing
residual heat.
The unit will stop operation as it reaches the
temperature point. During cooling and drying
operation, except IDU fan motor operates,
F2
other loads stop operation; During heating
operation, the heating fan motor operates
according to the conditions of blowing
residual heat.
The unit will stop operation as it reaches
the temperature point. During cooling and
drying operation, the compressor stops
F3
operation while IDU fan motor operates;
During heating operation, the heating fan
motor operates according to the conditions
of blowing residual heat.
The unit will stop operation as it reaches the
temperature point. During cooling and drying
operation, the compressor stops operation
F4
while IDU fan motor operates; During heating
operation, the heating fan motor operates
according to the conditions of blowing
residual heat.
Possible Causes
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;
Refer to the corresponding malfunction analysis.
1. Indoor and outdoor heat exchanger is too dirty?
Or air inlet/outlet is blocked?
2. Fan motor doesn't work at a normal fan speed;fan
speed is too low or the fan doesn't run.
3. Compressor operates normally or not? Is there
any abnormal noise or oil leak? Casing is too hot?
4. System is blocked inside? (Dirt blockage? Ice
blockage?
Oil blockage? Y-valve is not fully open?)
5. Main board temperature sensor detects wrongly.
1. Wiring terminal OVC-COMP is loosened. In
normal state, the resistance for this terminal should
be less than 1ohm.
2.Refer to the malfunction analysis ( discharge
protection, overload)
1. In defect of refrigerant;
2. Indoor evaporator temperature sensor works
abnormally;
3. The unit has been plugged up somewhere.
1. The wiring terminal between indoor ambient
temperature sensor and maiboard is loosened or
poorly contacted;
2. There's short circuit due to trip-over of the parts
on maiboard;
3. Indoor ambient temperature sensor is damaged
(Please check it by referring to the resistance table
for temperature sensor);
4. Mainboard is broken.
1. The wiring terminal between indoor evaporator
temperature sensor and maiboard is loosened or
poorly contacted;
2. There's short circuit due to trip-over of the parts
on maiboard;
3. Indoor evaporator temperature sensor is damaged
(Please check it by referring to the resistance table
for temperature sensor);
4. Mainboard is broken.
1. The wiring terminal between outdoor ambient
temperature sensor and maiboard is loosened or
poorly contacted;
2. There's short circuit due to trip-over of the parts
on maiboard;
3. Outdoor ambient temperature sensor is damaged
(Please check it by referring to the resistance table
for temperature sensor);
4. Mainboard is broken.
1. The wiring terminal between outdoor condenser
temperature sensor and maiboard is loosened or
poorly contacted;
2. There's short circuit due to trip-over of the parts on
maiboard;
3. Outdoor condenser temperature sensor is
damaged (Please check it by referring to the
resistance table for temperature sensor);
4. Mainboard is broken.
Service Manual
Installation and Maintenance
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