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21
electric box cover and check.
2.Check the connecting wiring between compressor and main control board and repair if
it is broken.
3、Use a multimeter to measure voltage between pin
No.1 and No.5 on 7pins
connector
of main control board. If the voltage equal to electric supply power, it means the main
control board is OK, to change t change the main control board.
6.3.2.1 Compressor checking
Use a multi-meter to test the resistance between C & S, M&S and M&C :
The ambient temperature is 25°C resistance as below:
the range of
Normal range of C&S : About 15.1±5%
Normal range of M&S : About 15.1±5%
Normal range of M&C : About 15.1±5%
If the test result is not in this range then it means the inner coil has some problem and the
compressor cannot work properly.
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