Question about Refrigerators
Frost build up on freezer rear wall, not making ice, and refrigerator section not staying cold? defrost timer or thermostat?
Posted by Anonymous on
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Posted on Jan 02, 2017
your sure the defrost cycle works? sounds to me its not. you need to remove the freezer back and check the defrost components. or put it in the defrost cycle and see if it is working. to get that much frost as you describe the dor would have to be left open. also check all door seals. let me know what you find and we can go from there
Posted on Aug 10, 2007
It has a defrost problem. Most likely cause would be the defrost thermostat which clips onto the evaporator behind the back panel in the freezer. Next most common would be the defrost timer. Third would be the defrost heater. Let me know if you want to try to test these parts. If so I will need the entire model # from the sticker in the fridge or on older models on a plate at the bottom front below the door.
Posted on Oct 10, 2007
It's usually the defrost heater on this model. Pull rear panel of freezer and remove the heater, (2 screws). It's at bottom of coils. Take to your parts place and they should be able to ohm out for you to see if it's ok. If it's all blackened, probably heater.
A check you can make is to pull refrigerator out to access back. UNPLUG UNIT!
Remove panel over control board on back of fridge. On the blue connector in bottom of board note the defrost terminal as specified on board. Unplug connector and put a jump wire from this terminal on the CONNECTOR, to the terminal that has the wire going to it with no wire next to it. Plug in refrigerator. If defrost heater is good, it should start glowing red within a few minutes. If it doesn't replace it.
Posted on Nov 14, 2007
SOURCE: I have an Amana bottom
Typically with this model it is either the timer or the defrost thermostat.
This is behind the back wall of the freezer. It is attached in series with the element. It is designed to open when the heater gets hot enough. The part is about the size of a stack of 6 quarters and typically has a blue end coating on one end. The other end is silver in colour and should be clipped on the black coloured heating element. It will have 2 wires coming out of the blue end.
If this part is defective then it will have to be replaced. by cutting a splicing a new one in. Be sure to unplug the fridge before replacing it.
There are 3 main components that can give issues; the timer, the thermostat and the heater. All 3 should be checked to confirm the fault. NOTE the timer contacts can be burned out as they arc under normal operation.
If you have a multimeter then you can check if the heater circuit has 0 or close to 0 resistance when there is frost on the back wall of the freezer. if it is then the timer is bad.
Posted on Jul 28, 2008
I had the same trouble. I found out if you have the digital display of temperature type of refrigerator adjust the freezer temperature to +5 degrees. The defrost systems uses a circuit board type. Not sure how it works. I took the back panel of and looked at the board. Did not see any manual defrost methods. I had to remove all the contents of the freezer and manually defrost. have not a problem since.
Posted on Nov 24, 2008
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