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T
R
O
U
B
L
E
S
T
R
O
U
B
L
E
S
1
4
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1
4
.
14.2 Error codes
The following is the fault code table of outdoor.
Fault
Fault Description
code
Outdoor ambient
1
temperature sensor fault
Outdoor coil temperature
2
sensor fault
The unit over-current turn
3
off fault
4
EEprom Data error
Cooling freezing
protection(the indoor coil
temperature is too low) or
5
heating overload(indoor
coil temperature is too
high)
6
Motor blockage protection
H
O
O
T
I
N
G
H
O
O
T
I
N
G
Sheet 1 Outdoor Error Code
Possible Reason of Abnormality
1.The outdoor ambient temperature
sensor connect loose;
2.The outdoor ambient temperature
sensor is failure;
3.The sampling circuit is failure.
1.The outdoor coil temperature sensor
connect loose;
2.The outdoor coil temperature sensor
is failure;
3.The sampling circuit is failure
1.Control board current sampling
circuit is failure;
2.The current is over high because of
the supply voltage is too low;
3.The compressor is blocked;
4. Overload in cooling mode;
5.Overload in heating mode
1.EE components is failure;
2.EE components control circuit
failure;
3.EE components insert incorrect.
1.The indoor unit can not blow air
normally;
2.The room temperature is too low in
cooling mode or the room
temperature is too high in heating;
3.The filter is dirty;
4.The duct resistance is too high to
result in low air flow;
5.The setting fan speed is too low;
6. The indoor unit is not standard
installed, air inlet is too near with air
outlet .
1.Outdoor ambient temperature
sensor fault；
2. Outdoor coil temperature sensor
fault；
3.Outdoor control board fault.
How to Deal With
1.Reconnect the outdoor ambient
temperature sensor;
2.Replace the outdoor ambient temp.
sensor components;
3.Replace the outdoor control board
components.
1.Reconnect the outdoor coil
temperature sensor;
2.Replace the outdoor coil
temperature sensor components;
3.Replace the outdoor control board
components.
1. Replace the electrical control board
components;
2. Normally protection;
3. Replace the compressor ;
4. Please see the Note 3 ;
5. Please see the Note 4.
1.Replace the EE components;
2.Replace the outdoor control
board components;
3.Reassembly the EE components.
1.Check the indoor fan, indoor fan
motor and evaporator whether
normally;
2. Normally protection;
3.Clean the filter;
4.Check the volume control
valve,duct length etc;
5.Set the speed with high speed;
6.Reinstall the indoor unit refer to
the user manual to change the
distance between the indoor unit
and the wall or ceiling.
1.Replace outdoor ambient
temperature sensor；
2.Replace outdoor coil temperature
sensor；
3.Replace Outdoor control board.
124
REMARKS
Applied to
ON/OFF
air
conditioners
with 2
control
boards
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