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The air conditioner doesn’t work.
Check the power supply.
Check the wiring.
Check whether the transformer has failed. Measure the output voltage of transformer and
check whether it is the range from +5V to 12V. If not, replace the transformer.
Replace the PCB.
The compressor doesn’t stop, after the set temperature is reached.
Check the wiring.
Check whether the unit can turn off using the remote controller.
Check whether all te mperature sensors a re n ormal, comparing
with the resistance table. If not, replace the sensor.
Replace the PCB.
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Service Manual
Room Air Conditioner with R-410A
Heat Controller, Inc.
23