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Unit: GSL25JFPBBS age: about 6 yearsI cannot stop ice from forming in the middle of my low side coils of my freezer. The defroster does come on, and water does drain from the outlet tube. This ice formation limits air flow and that causes my refrigerator to warm up over time. Worse problem is freezer getting up to about 30* and staying there for a while. When the freezer stays at 30, the fridge will climb to about 40. uhg! What I have done: 1) About 2 years ago, replaced the evap' fan because it was loud/whiring-sound. 2) Checked the ice despensor flapper seal. 3) checked the door seal as best I can. seems pretty tite enough 4) Did an all out defrost to start from scratch. worked great for about two weeks, now - not so much. 4) Had a local tech repairman come out. He said the ice on the low side was my problem, and to prevent it I need an "ice ball kit". the p/n he ordered and is waiting for me to pick up is WR17X11064 (same as WRX17x11791). That is the freezer duct that goes ABOVE the evap' fan! they would not elaborate on how this will fix my problem. wonder why? ;) Lookup number 167 on the below diagram: The unit uses a thermistor to decide on how long to defrost the coils. The service tech did tell me that "everything is functioning as it was designed to function". I do have a multi-meter if I can probe something. Oh, and my water line freezes inside the freeser door. We'll make that part II. :D Freezer section replacement parts for General Electric GSL25JFPBBS Refrigerator | AppliancePartsPros.com
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Are you sure the evaporator fan works as it should? You can check the evaporator and freezer thermistors by measuring their resistance at the control board and compare it to the table attached to the reply. The evaporator thermistor should be measured at the plug "J1" between the pins 4 & 5. The freezer thermistor should be tested at the same plug, between the pins 3 & 5. You have to know exact temperature in the freezer prior to this test. Do not forget to unplug the refrigerator before you work with the control board. Gene.
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Rank: Member
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I know that the fan spins and air blows. I do not know how often the fan should be coming on though. Are there some noticable events that will cause the fan to come on, so I can test that out too?
I will test out the sensors tonight. thank you for the help and for all that you do here! Much appreciated! :cool:
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Rank: Member
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Update on Thermistor values:
First, I was surprised to see -15*F in the fridge having never seen below -10 before. I unplugged the unit and measured the following:
At -15*F
Measured evaporator thermistor = 90kohms (indicates -25*F) -10 error
Measured freezer thermistor = 74kohms (indicates -17*F) -2 error
Table value indicates = ~65kohms for -13*F
I then plugged it back in and about 20 minutes later the temperature was below -20*F, but my two thermometers where about 7-8 degrees off from one another, so I didn't bother with measuring. Still though, I was shocked at how cold it was! Fridge was at about 28*F.
No more than 2 hours later, the freezer temperature was +20*F.
At +20*F
Measured evaporator thermistor = 28kohms (indicates +14*F) -6 error
Measured freezer thermistor = 26kohms (indicates +14*F) -6 error
Table value indicates = ~22kohms
Is this error something that will cause prolonged defrost and lead to warmer freezer temps? Before all of this, I would crank up the freezer coldest via the control knob setting. Even as high as 9 out of 10 for "coldest"
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