I have a 2006 Profile Dual Evap SxS. The FF side has always registered the proper temp until recently. It registers above 40 yet Food is consistently below 35 in FF. Some lettuce was slightly frozen so its approaching freezing. Thermistor cks fine, fans fine. No heat source near sensor. I was hoping a GE factory tech may have run in to this? I went on a call today another dual evap unit that was registering 66 yet was cooler inside. This unit also frosted over FF evap. It is cycle-matic no defrost heater. Again all Thermistors ck fine fans fine.
You say " all thermistors check fine " , how did you check them ? Did you check for the 5-8 DC volts at the main control board , for the thermistors ? Did you do the diagnostic check for the thermistors from the control panel ? I'm sure you know there are 5 thermistors , since the refrig has the dual evap . Possibly the # 5 is bad , since it is the freezer temp " controller " , yet if it tells the board it's not cold enough , it still sends refrigerant to the refrig evap . Since the refrig evap has 2 fan motors , can't remember if there is a damper there also . Maybe when the # 3 thermistor is satisfied , it only cuts the fans off , even though refrigerant is still going thru the refrig evap .
You are incorrect sir . There are 5 thermistors , and yes , I have seen the # 4 thermistor , to only let half of an evaporator defrost before telling the board , to restart . If you know how to use the digital board to check the thermistors , it will also tell you , there are 5 .
Cool dude , I think I could learn some from you . You need to be here more often .
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My parts lookup too has no images available for you refrig but i believe it to be a GE Profile with a fresh food fan (and air duct down the center of the fresh food side). All fan motors are 12vdc and run off the Lowvoltage side of motherboard. i assume you are checking voltage to comp from motherboard? How did you check relay?? Have you axcessed motherboard?? On the top of (I say top-- i belive its mounted horiz on yours but all the small wires are on the right) is all the low voltage fan motor, damper, control wiring On the bottom (or the left) side of the motherboard is the larger line voltage wiring. The connector with 3 wires is labeled def -- comp---line it should be blue. Try jumping L1 to comp. ((Just so ya know Def will energize the def heater regardless of compartment temp it does have a bimetal but it only a safety set at 100deg in case relay on board welds shut---it monitor evap compartment, frz, fresh food, (two seperate in FF) in your model))
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There are only 4 thermistors. The Freezer is fine so we wont be discussing the frz evap therm or Frz comp thermistor. Only FF Compartment and FF Evap. I observed a temperature/resistance fluctuation that was accurate with scale. I have also never seem a thermistor still fluctuate resistence yet not be accurate with scale. Plenty that are open/short or stay at one resistence regardless of temp. I was hoping someone has seen this issue out there.
The 5th is for Custom Cool Drawer but isnt used in any way for FF compartment sensing. Also is in totally seperate connector on board.
I did join back in 07 and was here a lot but I got so frustrated with trying to get my premium post money .... I would just use it to be connected to other techs for cases like this refrig. You wont believe what fixed it. The FF thermistor!!! I just went ahead and tried it even though it was testing pretty good to me at the board. Once i had the therm removed i threw it in the freezer and it did raise resistance to over 30K. Thn i left it room temp and it was pretty close around 5k and them i even heated it and it went to 2-3k. It would raise resistance when i stopped the heat. But when i left it in the FF comp overnight it stuck around 10k and never any higher. So sir...you were right....this is the first time Ive seen one flutuate but not be accurate at one temp.
I did join back in 07 and was here a lot but I got so frustrated with trying to get my premium post money .... I would just use it to be connected to other techs for cases like this refrig. You wont believe what fixed it. The FF thermistor!!! I just went ahead and tried it even though it was testing pretty good to me at the board. Once i had the therm removed i threw it in the freezer and it did raise resistance to over 30K. Thn i left it room temp and it was pretty close around 5k and them i even heated it and it went to 2-3k. It would raise resistance when i stopped the heat. But when i left it in the FF comp overnight it stuck around 10k and never any higher. So sir...you were right....this is the first time Ive seen one flutuate but not be accurate at one temp.
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