Shut itself off during cooking and wont turn back on

The unit could be overheating and shutting down, cooling off, and restarting. Check ventilation holes on back for dust accumulation and blockage. Check that cooling fan is turning properly.

clear and re set cooking cycle

Sounds like stuck relay contacts. Magnetrons need a high voltage source which is controlled by a micro to relay and then from relay to voltage source. Even the turntable works via a relay.

Sounds like you had a component failure during a cook cycle. You need an ohm meter and experience to troubleshoot this problem.

Ok....first you don't have a model or make, but yes there should be use, sometimes replacable, inside, if it blows because purhaps the unit was ran empty, it would power off the whole unit, i had a unit that would shut itself off during cooking, and never come back on for days, this was a problem witht the power supply of the circuit board, if you have no worries, purhaps bang on the side, with out denting it, and see if it comes back on, if it does don t use it.

Hi,

The over the range microwave hood has a heat sensor in it. If it senses hot temperatures from cooking below it will turn the fan on. The fan will turn off once it cools down, this is to protect the microwave controls from damage.

sounds like the cooling fan has came adrift or stopped working , this will cause the magnatron ( the microwave generator ) to overheat tripping the over temperature stat ,so fix the cooling , but be sooooooooooooo carefull in there , microwaves + really high voltages , not really a job for a non electrician/microwave tech

If you just put the fan blade back on, it will almost certainly fall off again.

The best bet is to slightly rough up the contact area of the shaft with sandpaper and use a little super glue to hold the blade assembly on the shaft, and let it set a few minutes before using it.

I always recommend that you use the hood vent exhaust fan when cooking on the stove top to keep heat, steam, and grease out of the controls.

There should be a "mini-manual" (tech sheet) hidden inside the unit behind the control panel or hidden on the left side behind the grille, which is very helpful when troubleshooting, testing, and locating components.



At our Web site, we have a video available showing how to remove a typical over the range control panel assembly in under 5 minutes.

You can find helpful exploded view diagrams and order parts by entering your full model number from the tag on the oven here.

Feel free to contact me directly (and please remind me of your full model number from the tag on the unit) for more information & help.

We're happy to help you with free advice and we'd appreciate your thoughtful rating of our answer.

William E. Miller, AS-EET
[email protected]
http://www.microwavedisplay.com

It looks like a component is short-circuited and then it acts to protect. Call a service.

It could be an overheating magnetron. There is a thermostat inside (mounted to the side of the magnetron) which senses excessive heat and opens up, disconnecting the power to the oven. If that's the case, unplugging it and plugging it back in will not fix it. It will come back on by itself after it cools down. That's another indication that it might be a thermostat kicking out. You might try to further characterize the failure: - happens only when cooking on full power? - also happens when cooking on a low power level? - shuts down every time you use it? - only shuts down after XX amount of time cooking? Once you characterize it more, I can make further suggestions. It may also be a bad connection on the control panel.