The short of it is my freezer coils frost up and then the fridge won't get cool (top freezer, bottom fridge). Thawing out the coils fixes everything for a couple weeks and then need to thaw again.
Having said that, you would assume a part of the defrost system would be broken or vents are blocked, but I have tested all the parts for continuity and none of them are broken and made sure the air can flow. Below were the parts I tested and the results. I'm not sure what else to try, please give me a suggestion! Thanks!
It's a GE fridge model GTS18IBRRRBB. In order of what I have tested:
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I took out the heater coil (part 618) and checked for continuity. I got around 36 Ohm resistance, so should be good.
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I then cut out the defrost termostat (why there isn't a clip harness is beyond me) (part 620) and tested for continuity while it was cold (closing temp is 28 F. Text on termostat is L58-30F) and at room temperature. It acted as expected. Continuity while cold and no continuity when warm.
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I then took out the timer. (part 648) and checked continuity between the pins for common and compressor/fan, advanced the timer until it clicked, and then checked continuity between the pins for common and heater. All checked out. I did a few continuity tests between the wires of the harness and didn't find any breaks either. The screw for advancing the timer is exposed in my fridge, so I can see that it advances on it's own. I put a mark on it and checked periodically that it has moved.
Submitted August 07, 2017 at 12:25AM by xtos2001 http://ift.tt/2ufTa1w DIY
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