Question about Maytag M3DH30B2A Dehumidifier

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Maytag Dehumidifier I have a 4 year old Maytag that I cleaned real well because there was no water in the "bucket". The fan still runs but the compessor does not. Maytag says that it was made by Fedder who went bankrupt so now Maytag is not honoring the warrenty. The only parts that could be bad are the compressor itself or the capacitor. How do I test it to see which one is bad? I find no fuse or relay. I figure it overheated last year because of all the dust in the coils that I cleaned out of it.

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Hi barkas4,
I had the same problem with an Ebac machine a few years ago. I figured that it would be worth trying a new capacitor - surely only a couple of ££ or $$. So I took the machine apart - loads of screws and bits of casing everywhere - bought a new capacitor (£14 !!!) and it still wouldn't run :-(

I suspect that the failed capacitor caused the electric motor driving the compressor to cook itself while stalled. It is now in the corner of the garage where it will stay until I need the space.

It's a real shame that our tendency to buy the cheapest products has driven down manufacturers standards to the point where stuff is carefully designed to last for its warrant period plus a day.

But I digress! My machine had the capacitor (400V, 2 uF) just next to the control circuit pcb. It was a black block about 2" x 1" x1/2" with two spade terminals on it. One had broken off. As I understand it, the motor doesn't "know" which way to turn without the capacitor, so it just sits and hums and overheats.

The bottom line (this one) is that an electrician may be able to tell you that the capacitor is defective, but that may already have killed the motor.

If these suggestions do help you solve the problem, please give my reply a rating to help others judge my knowledge. If they do not, please add a comment with more details so I can try to help
you further. Cheers, D

Posted on Jul 01, 2008

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