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Thread: Frigidaire Microwave Thermal Cutoff switch Testing

  1. #1

    Frigidaire Microwave Thermal Cutoff switch Testing

    Model Number: PLMVZ169GCC
    Brand: Frigidaire
    Age: 1-5 years

    Hello,

    I have watched the video on testing a thermal cutoff fuse (hood), when i run an impedance test on a the fuse it does not sound off, i have purchased a new switch and it also does not sound off. I checked the second thermal cutoff fuse (oven cavity) and the meter does sound off (pass). Is there something different that could be causing it not to sound off?

    thanks
    Ricardo

  2. #2
    Yes they are different.

    The hood cutoff should be infinite ohms (open) at room temperature.
    It closes when it gets hot and keeps the fan running till the unit cools down.
    Often the temperature at which it opens is on the device re: L175-30 would be it opens at 175 degrees F and resets (closes) at 145 degrees F.

    The oven cutoff should be 0 ohms at room temperature.
    It opens if the oven gets too hot and is a safety device.
    Most of this type do not re-close so it acts like a fuse but I do not know about this one for sure.

  3. #3
    thank you for the explanation denman.

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