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I am having problems with the fridge compartment getting warm because the unit doesn't go into defrost mode - but the problem is intermittent. I first noticed the evaporator fan wasn't running when it should, and there was frost on the cooling rods. If I manually defrosted the unit with a heat gun, everything was fine for a few days. The defrost heater and thermostat tested OK with a circuit tester, so I replaced the defrost timer.
Then the problem got worse. The defrost quit working entirely and the cooling assy iced over. In this frozen state the defrost thermostat tested open - which seemed to designate a failure. I thawed the unit out with a heat gun and everything works fine again. Could a failed thermostat work intermittently? I have ordered the part just in case.
Also, I also tested the cold control and it always tests "closed" electrically. However, I am assuming that is because by the time I disconnect it, it has warmed up.
Am I on the right track with the thermostat? Is there a better way to test the cold control or should I replace that also?
Edit: Unit is more than 10 yrs old
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Rank: Advanced Member
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Joined: 2/29/2008(UTC) Posts: 19,638
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Here are your parts Parts for Amana BB20VPSE / P1321302W E Refrigerator - AppliancePartsPros.comSee the attachment for the tech sheet [COLOR="Blue"]Could a failed thermostat work intermittently?[/COLOR] Yes [COLOR="Blue"]Is there a better way to test the cold control or should I replace that also?[/COLOR] Best way to test is to monitor the freezer temperature. A bad/shorted control thermostat the loss of defrost. I am assuming that after you did a manual defrost the compressor started to cycle as it usually has until the coils frosted up solid again. |
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