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Patricio

Frigidaire Microwave #FGMV174KFB

13 posts in this topic

This is a built in above oven Microwave 14 months old that runs,heats, lights up perfectly for 10-12 seconds then dies.  will re start again when start button pushed for 10-12 seconds.   My thinking is the microwave has a fuse that resets itself.  Or loose door switch?   My experiance with microwaves is basicaly not much (get a new one, their cheap.   This one is $400, just out of warranty.    Any & all help is greatly appreciated.  Going to service manual request site to ask for a manual.   Where would I find a tech sheet in the unit itself?  Will make call on Monday.  A Very satisfied customer I have worked for before.    :thanks:  Patricio

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Need appliance parts? Call 877-803-7957 now!

sounds like the M/W Oven Cavity is over-heating

(for some reason)

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Some of the Frigidaire otr's had an issue with the humidity sensor.  I forget what the symptoms were but had to replace a few under first year warranty.

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The link is broken for humidity sensor,

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works for me ..

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Humidity sensor P/N 5304440033

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How is it tested for tolerances?

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Continuity for sure.  Still looking for what resistance value.  I'll keep trying.

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Continuity for sure.  Still looking for what resistance value.  I'll keep trying.

Thanks for sure.  Ordered humidity sensor from APP, both RC & APP have it back ordered, not sure when it will be shipped.  Will give me plenty time to line up ducks.    

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I recently started learning about microwaves and am not familiar with a humidity sensor.  Are they on all models? and how do they work?  Thanks.

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Doing my homework,  the few M/W's I've dismantled were counter models.  I've replaced door tension bars in a couple over range units.  Replace door switches in another couple, was able to access thru control panel.

 

I would think that this humidity sensor is attatched inside the cabinet to the top of the cavity chamber which I believe to access it the M/V has to come down off its perch.    Probly a pain of a job for one person.

 

Am I on the right tract.  After I get it down, ought to be piece of cake.   Am I on right tract.

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d

 

Thank you mucho gracious Senior Reg_US.   Found this post this morning.  

 

Went to customer (tightwad complaining about quote which I gave $220 over phone unit unseen).   Any way after Testing operation of M/W, it shut down after 30 seconds of operation with 3 tests, I pulled M/W down from cabinet mount & installed humidity sensor (Manual suggest to change out sensor is best way to test old sensor)  I found microwave Dead after putting back together & plugging in before remounting to cabinet.   Started tracing wiring & testing power to control panel.   Had to take unit apart again & low & behold found a thermal fuse that had a loose spade in the fuse & the plastic backing was damaged (my guess is from factory).  Wiggled & M/W would run, let go And it would go dead. 

 

Ordered fuse & is on way,  Hope control board did not suffer damage from the open connection surge.   By the way cheep ass customer wants me to put the old sensor back in to save him some money cause he looked on line & found the fuse is less expensive than the Humidity sensor Book price is $177 total job.  Does not matter that I did not quote extra to pull Unit off of wall, & will be putting back up on wall.  It is OK,  now I will have a humidity sensor to test other Units if I run into the problem again.  And I will have job security in future   cause he will call again.  I will just be prepared better with my quote.

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