Re: Sears dehumidifer problems

Mike S. wrote:
I haven't removed or opened it. It's a small white box with a grating in
front, sort of looks like those little piezo sound transducers. Has a
3-pin connector on the bottom. Will look more closely when I open the case
to install the replacement.

If it is the style I am familiar with it acts as a variable capacitor. Something about a membrane that absorbs water with an electrode on each side. When I used one it was in an oscillator circuit with a microprocessor measuring the frequency. They are non-linear and somewhat temperature dependent.
.

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