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Defrost control troubleshooting

5 posts in this topic

We have a French door bottom mount Whirlpool fridge with freezer frost build up problem.

In your very helpful post titled...

 

...you diagnose a failed ADC by using the Forced Defrost mode.  My defrost heater element functions fine in FD mode and the compressor shuts off also.  Both thermisters pass the built in test and the defrost terminator behaves properly after manual defrost (Open) and during operation (Shorted).  Can the board fail in such a way that FD operates but self initiated defrost does not?

 

Thanks,

 

Matt

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Need appliance parts? Call 877-803-7957 now!

Yes.

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Thanks for the help.  So clearly need to replace the board?

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Yes. If nothing else is wrong with the defrost circuit, the board is the next most likly suspect.

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Thank you very much.

 

Matt

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