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Old 06-10-2020, 01:56 PM   #1
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Join Date: Jul 2019
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Fr3 fridge issue

Iím having random times where it just stops cooling on shore power. Lights till work. But it doesnít cool. Seems to work on propane. I had in for other minor work and dealership found nothing wrong and itís cooled again for a while. Fuse behind box is fine. I did note that both times seem to time with a brown out at the location.

Thoughts?
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Old 06-10-2020, 05:02 PM   #2
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Location: San Jose, CA
Posts: 185
found this n another site:

The cooling system of a RV fridge works the same on either propane or shore power:

A heat source(a small flame on propane, an electric heating element on shore power) heats an ammonia based refrigerant. This hot, pressurized substance flows through coils and small oriffices and looses pressure, absorbing heat in the process.

If the fridge works on propane, this indicates the cooling system is functioning properly.

I would suspect the electric element has failed. It can be found near the burner assembly. It has two rather large wires and is mounted in the chimney.

To test, disconnect power (unplug 120 plug from the outlet near the fridge) and remove the element leads from the control board. With a volt/ohm meter, test across the leads. There should be 40-50 ohms, if the meter shows no ohms, the element has failed.

If the element does show 40-50 ohms, the problem is probably the control board relay.
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