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Here is the service manual.

Hello
See the service manual link below. Go to page #2 for service diagnostics. Your control main control board manages the defrost system. By entering it into the diagnostic mode on page #2, you can check and force the defrost heater, thermistor and all of the other functioning components.

Here is the service manual.

Here is the service manual.

Here is the service manual.

Here is the service manual.

Here is the service manual.

Here is the service manual.

Here is the service manual

Here is the service manual.

Here is the service manual.

Here is the service manual.

Here is the service manual

Here is the service manual

Here is the service manual.

Here is the service manual.

Here is the service manual.

Here is the service manual.

Here is the service manual.

Here is the service manual.