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* Driver PCB located in machine room.
Step 1. Open PCB Cover
Step 2. Check Driver PCB
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Dear is PC board located in the PCB case.
The control driver is PC board for the compressor.
This step shows the source voltage of the driver PC board.
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12-1 Check A
Multi
Tester
Check to make sure compressor is receiving voltage from IPM
- In order to determine whether the compressor is operating normally,
check the output voltage during the refrigeration cycle.
- After initial power-up, when the compressor begins too operate, wait
10 minutes before checking.
- The compressor is operating normally if the voltage is greater than
80V.
Measure the voltage between the POWER and COMM pins of the connector as shown below.
IPM Output check
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