25
Cooling mode don't work or cooling not enough.
Check the operation mode.
Check the setting temperature.
Check whether dust filter is too dirty.
Start the unit with cooling mode, check whether the temperature of the
compressor's discharge pipe is smaller than 90
℃
, if no, recharge refrigerant.
Replace the capillary.
No
No
No
No
The air-con doesn't work.
Check the power supply.
Check whether the transformer is failed. Measure the output
voltage of transformer and check whether it is the range from
+5V to 12V. If not, replace the transformer.
No
Check the wiring.
No
No
Replace the PCB.
