Question about Thetford Norcold RV Cooler/Freezer

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Norcold DE 540: Works OK on 12 volts; on 110 volts, compressor runs all the time -- off/on switch always ON and thermostat doesn't work. What is wrong? Cools OK, but runs all the time and gets very cold on 110. Thanks, Dave

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  • Dave Sanger Jul 13, 2009

    AS I mentioned, the refrig works OK on 12 volts; thermostat works OK and on/off switch works OK.

    Only on 110 vac input, does it run all the time and the thermstat and on/off switch does not function.

    So, we need another solution, please.

    Thanks

    Dave


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The difference is one is running on DC voltage while the other is running on AC voltage. If the thermostat doesn't work at 110 but still works at 12, leave it, sounds like an inverter is misoperating.


Benjamin

Posted on Jul 14, 2009

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Hi there,

I assume there is no manual control for setting temp. so the thermal sensor or control circuit has failed and it is just staying at its maximum.
Now you need to change the thermal sensor.

Good Luck!!

Thanks

Posted on Jul 13, 2009

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