29
Installation and Maintenance
9.1 Error Code List
9. Maintenance
No.
Malfunction
Name
Display Method
of Indoor Unit
(Error Code)
A/C Status Possible Causes
1
Indoor ambient
temperature
sensor
is open/
shortcircuited
F1
When temperature sensor is open/
shortcircuited, under cooling or heating
mode, the unit will stop operation as it
reaches the temperature point. Under
fan mode, the unit operates according
to original status.
1. The wiring terminal between indoor ambient temperature sensor and
controller is loosened or poorly contacted;
2. There’s short circuit due to trip-over of the parts on controller;
3.Indoor ambient temperature sensor is damaged (Please check it by
referring to the resistance table for temperature sensor)
4. Main board is broken.
2
Indoor
evaporator
temperature
sensor is
open/short-
circuited
F2
1. The wiring terminal between indoor evaporator temperature sensor and
controller is loosened or poorly contacted;
2. There’s short circuit due to the trip-over of the parts on controller;
3.Indoor evaporator temperature sensor is damaged (Please check it by
referring to the resistance table for temperature sensor)
4. Main board is broken.
3
Outdoor ambient
temperature
sensor is open/
shortcircuited
F3
1.The wiring terminal between outdoor ambient temperature sensor and
controller is loosened or poorly contacted;
2.There’s short circuit due to trip-over of the parts on controller;
3.Outdoor ambient temperature sensor is damaged (Please check it by
referring to the resistance table for temperature sensor)
4.Main board is broken.
4
Outdoor
condenser
temperature
sensor is
open/short-
circuited
F4
1. The wiring terminal between outdoor condenser temperature sensor
and controller is loosened or poorly contacted;
2. There’s short circuit due to the trip-over of the parts on controller;
3.Outdoor condenser temperature sensor is damaged (Please check it by
referring to the resistance table for temperature sensor)
4. Main board is broken.
5
Insucient
fluorine
protection
F0
Indoor fan runs according to set fan
and other loads will stop.
1.Heat exchangers are too dirty or the air inlet/outlet is blocked.
2.Compressor doesn't work normally. Strange noise or leakage occurs.
Temperature of the shell is too high.
3.System is blocked inside(dirt block, ice block, oil block, Y-valve not fully
open).
4.The refrigerant is leaking.
6
WIFI
communication
malfunction
JF
Loads operate normally, while the unit
can’t be normally controlled by APP.
1.Main board of outdoor unit is damaged;
2.Detection board is damaged;
3.The connection between outdoor unit and detection board is not good;
7
The power
supply voltage is
lower than 184V
PL
When the power supply voltage is less
than 184V, all loads stop operation
except LED indicator.
1.The power supply voltage is lower than 184V;
2.The main board of outdoor unit is damaged
。
8
Overload
protection for
compressor
H3
Indoor fan runs according to set fan
and other loads will stop
1.Heat exchangers are too dirty or the 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 doesn't work normally. Strange noise or leakage occurs.
Temperature of the shell is too high.
4.System is blocked inside(dirt block, ice block, oil block, Y-valve not fully
open).
5.The refrigerant is leaking and cause overheating protection to
compressor.
9
Overload
malfunction
E8
During cooling or drying operation,
indoor fan operates and other loads
will stop.
1.The environment is formidable.
2.Heat exchangers are too dirty or the air inlet/outlet is blocked.
3.Fan motor doesn't work at a normal fan speed; fan speed is too low or
the fan doesn't run.
4.Compressor doesn't work normally. Strange noise or leakage occurs.
Temperature of the shell is too high.
5.System is blocked inside(dirt block, ice block, oil block, Y-valve not fully
open).
6.Temperature sensor of main board cant detect correctly.
10
Communication
error of indoor
and outdoor
unit
E6
Cool, fan and dry: compressor and
outdoor unit stops operation, while
the indoor fan operates.
Heating: all loads stop operation.
1. The connection wire of indoor and outdoor unit is poor;
2. Wiring inside the unit is abnormal and damaged;
3. Communication circuit of control panel of indoor or outdoor unit is
abnormal;
To Next Page
Loading...
Need help?
General
