Constantly Running Freezer -20 deg F

Constantly Running Freezer -20 deg F I have an Electrolux Fridigaire Freezer FFU14F5HWC. Recently the temperature got so high that it defrosted and we lost a bunch of stuff. We noticed because of water on the floor. By the time we saw the issue most of the stuff in the freezer was frozen again and it was working. I bought a temperature logger and found the temperature to be at an extreme -20 deg F. After doing some digging and trouble shooting I ordered and replaced the defrost thermostat and the thermistor (temperature sensor). The freezer ran for approximately 1 day properly and then is again at this extreme low temperature.

Asked by: Guest | Views: 151

Total answers/comments: 2

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mcgyver89 [Entry]

"Hi,

Did you mean model # FFU145HWC?

Have you checked that the replacement defrost thermostat is still OK?

If you have a DMM (digital multimeter) use its’ Ohmmeter function to test the thermostat out of circuit.

Remove the thermostat and let it warm up to ambient temperature. The specifications say that it should have a resistance value of ~6.2K Ohms at 68 F. so you may have to allow a bit if the ambient temperature is higher or lower. The higher the temperature the lower the resistance value and conversely the lower the temperature the higher the resistance value

Next submerge it in a glass full of ice water, the temperature of which should be close to 32 F. The resistance of the thermostat should then measure ~16.3K Ohms.

If you aren’t getting these values (or close to them allowing for temperature variation) then it is faulty and needs to be replaced.

Check behind the kick plate to see if there is a “tech sheet” for the freezer.

I cannot find the specifications for the thermistor, which you may also have to test just to make sure that it is still OK. If there is a “tech sheet” it will have the specifications for the thermistor.

Sometimes replacement parts can go faulty so it is worthwhile to check and eliminate them and not assume that they are OK just because they’re new."

mcgyver89 [Entry]

There's no such thing as too cold for a freezer. The recommended fridge range is 32 to 40 and the freezer recommended range is below 0 with an ideal being between -10 to -20.