Rank: Member
Groups: Registered
Joined: 6/28/2009(UTC)
Posts: 1
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I have had the defrost thermostat go bad and then the defrost heater went bad after replacing the heater it would go about two weeks then freeze up and quit cooling, so there was nothing left in the defrost circuit exept the mother circuit board, but after replacing that the evap fan started cycling off with the compressor and it will not keep the refridgerator cold, freezer seems to be fine. I have no wiring diagram or sequence of operation for this unit and I'm not having any luck finding anything on line for this, I don't think that is normal for the evap to cycle with the compressor or is it.
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Rank: Advanced Member
Groups: Senior Expert
Joined: 3/10/2009(UTC)
Posts: 1,363
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Yes it is normal. Everything cut off when the compressor cuts off since there is no cold being made when it's off and no need to circulate any air.
The fridge gets it's air from the freezer through a damper. The evaporator fan blows the air through it. If that damper don't open when you adjust the fridge temp control the cold air can't get through.
Also make sure your defrost system is working by checking the frost on the evaporator behind the back cover in the freezer.
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