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mpoch  
#1 Posted : Wednesday, May 19, 2010 3:45:27 PM(UTC)
mpoch

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I have a GE Profile fridge (PFS22MBS) that is experiencing defrost problems. Both the fridge and freezer will hold there temps for a few weeks, then eventually the freezer will start dropping into the negatives and the fridge will start warming up. The evaporation coils are completely blocked with ice. I have to manually defrost with a hair dryer before the unit will hold steady again (only temporary). I have replaced the motherboard and have checked the continuity of the defrost thermostat, reading about 30 ohm and the blue surface is flat. What else could I check for? Thanks for the help with this post.
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Gene  
#2 Posted : Wednesday, May 19, 2010 7:38:26 PM(UTC)
Gene

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Which part did you call "defrost thermostat"? Can you refer to the numbers on the diagram?

Here are the breakdown diagrams and Replacement parts for General Electric PFS22MBSAWW Refrigerator | AppliancePartsPros.com

Gene.
mpoch  
#3 Posted : Thursday, May 20, 2010 2:01:39 PM(UTC)
mpoch

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Hi Gene,

Thanks for the quick response. The thermostat was number 621, Thermodisc(fuse-m). I have read on other posts that if the blue top is still smooth then it is working just fine. I have also seen that you should be getting a continuity reading of 0-1 ohm, I got about 30. Is this value still good?
Gene  
#4 Posted : Thursday, May 20, 2010 2:51:22 PM(UTC)
Gene

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30 Ohms is definitely wrong reading. It suppose to be close to zero. I would also replace the temperature sensor (#241 on the diagram) and check the defrost heater for continuity.

- The thermodisc Part number: AP3796802
Part number: AP3796802



- The temperature sensor Part number: AP3185407
Part number: AP3185407



Gene.
mpoch  
#5 Posted : Saturday, June 26, 2010 4:14:39 AM(UTC)
mpoch

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Hey Gene,
So I ordered the thermodisc and installed it. Still having issues. Broke down and had a service technician come in and he assessed the problem as a bad defrost heater. How dificult are these to replace by the homeowner. I got a quote of $460 for parts and labor.
Gene  
#6 Posted : Sunday, June 27, 2010 1:18:09 PM(UTC)
Gene

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The defrost heater is shown as #826 on the diagram. You can get it from Appliance Parts Pros for $120.15

Remove the rear cover in the freezer and look into the evaporator to see how difficult is to replace it. I do not think this part is too difficult to replace yourself.

- The defrost heater Part number: AP3775436
Part number: AP3775436


Gene.
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