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14.TROUBLESHOOTING
14.Troubleshooting
14.1 Trouble guide
Troubleshooting for normal malfunction
Troubleshooting Possible Reasons of Abnormality How to Deal With
Air conditioner can not start up
1. Power supply failure;
2. Trip of breaker or blow of fuse；
3. Power voltage is too low;
4. Improper setting of remote
controller ;
5. Remote controller is short of
power.
1. Check power supply circuit;
2. Measure insulation resistance to
ground to see if there is any
leakage;
3. Check if there is a defective
contact or leak current in the
power supply circuit;
4. Check and set remote
controller again;
5. Change batteries.
The compressor starts or
stops frequently
The air inlet and outlet has been
blocked.
Remove block obstacles.
Poor cooling/heating
1.
2.
3.
The outdoor heat exchanger is
dirty, such as condenser;
There are heating de
vices indoors；
The air tightness is not enough,
and people come in and out too
frequently;
4. B
lock of outdoor heat exchanger;
5. Improper s
etting of temperature.
1. Clean the heat exchanger of the
outdoor unit, such as condenser ;
2. Remove heating devices;
3. Keep certain air tightness indoors;
4. Remove block obstacles;
5. Check and try to set temperature
again.
Sound from
deforming parts
During system starting or stopping, a
sound might be heard. However, this
is due to thermal deformation of
plastic parts.
It is not abnormal, and the sound will
disappear soon.
Water leakage
1. Drainage pipe is blocked or broken;
2. Wrap of refrigerant pipe joint is not
closed completely.
1. Change drainage pipe;
2. Re-wrap and make it tight.
Troubleshooting according to fault codes
When the air conditioner failure occurs, the fault code will display on the control board.
How to check fault codes
50
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