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Turn on by itself - LG Over-the-Range Microwave

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My sharp R409Y*A microwave overheats after 4 min every time and shuts itself off for a few min. It will turn itself back on, but if I use it right away, it will shut itself off again quicker.


I would say your cooling ran is not running, or your vent holes are blocked, or (if equipped) a filter is blocked.

Without the cooling fan, the magnetron overheats and its TCO (thermostat) shuts down all power to the oven until it cools back down to a safe temperature, then power is restored.

Feel free to e-Mail me at [email protected] if you need more free advice.

Sep 19, 2016 | Sharp Microwave Ovens

1 Answer

My magic chef microwave locked itself. it wont unlock when i hold down the cancel key. what do i try next?


PDF]microwave oven and keep it for future reference. - Home ...

www.homedepot.com/.../ef8a2fd1-648b-424f-81d1-37...The Home Depot... of insurance loss. Once again, thank you for purchasing a Magic Chef product. .....To Lock/Unlock Control: The microwave oven must be in for 3 seconds until

Oct 07, 2015 | Magic Chef Microwave Ovens

1 Answer

Have Kenmore microvave and the vent starts on its own


Actually, that's a feature! If you cook much on the range (stove) beneath the microwave, the heat will cause the microwave bottom to heat up quite a bit (just touch it!), and the microwave will turn on it's exhaust fan in an attempt to save itself from burning up. It will shut off in about 15 minutes after you turn off the source of heat.
But if the fan comes on by itself even when the microwave is cool (or at least not hot), then you probably have a defective fan thermostat. This thermostat is located behind the control console on the inside bottom of the microwave.

If you need further help, reach me via phone at https://www.6ya.com/expert/ronald_e6b9572cebe3ad27

Aug 27, 2014 | Kenmore Microwave Ovens

1 Answer

I have a Kenmore microwave. The vent will just start on its own and can't shut off


Actually, that's a feature! If you cook much on the range (stove) beneath the microwave, the heat will cause the microwave bottom to heat up quite a bit (just touch it!), and the microwave will turn on it's exhaust fan in an attempt to save itself from burning up. It will shut off in about 15 minutes after you turn off the source of heat.
But if the fan comes on by itself even when the microwave is cool (or at least not hot), then you probably have a defective fan thermostat. This thermostat is located behind the control console on the inside bottom of the microwave.

If you need further help, reach me via phone at https://www.6ya.com/expert/ronald_e6b9572cebe3ad27

Aug 27, 2014 | Kenmore Microwave Ovens

1 Answer

Have a Whirlpool MW Model MH6600XV with a vent hood; last night the vent went on by itself and I was unable to turn it off except by the circuit breaker; turned the breaker back on this morning and the...


If you got it hot enough from your soup there is a fan switch to turn the blower on to cool the unit. Maybe next time cook that on a different burner on the stove to try to not heat up that area under the microwave.

Sep 17, 2017 | Microwave Ovens

1 Answer

Microwave will turn on by itself and display PAN on screen.


Does everything come on by itself or is it just a fan that comes on? If so, is it a convection oven?

Sep 12, 2009 | KitchenAid KHMS155LSS 1000 Watts Microwave...

1 Answer

Microwave turns itself oo


it sound like the inverter unit is faulty or the magnetron is gone.the only real way to find out which is to change each one in turn,sorry i cant be any more help.if you have any more questions get back in touch,regards les

Jul 28, 2009 | Neff Microwave Ovens

2 Answers

Kenmore 721 microwave fan turns on by itself


I have the exact same problem with my Kenmore Microwave model 721 that we bought in October of 2005. The Fan will just randomly turn itself on even when we are not cooking. It has been doing this for the last few months and is starting to become more frequent. There is no way to turn it off except to unplug it for several hours.
Was there a recall for this defect ?

Apr 25, 2009 | Kenmore Microwave Ovens

1 Answer

GE JES1456WFC001 microwave oven turns on by itself


You are correct. The keypad is failing.

If you might want to replace it yourself, I have uploaded a handy guide with pictures showing you what's typically involved.

If you would like to have us do this for you, we do that for $39.95 plus part costs, assuming we can get the part for this Canadian model.

We're happy to help and we appreciate your thoughtful rating of our answer.

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

Jun 23, 2008 | GE JES1456 Microwave Oven

1 Answer

Starting by itself


Time for a service call. Should not turn on by itself at any cause. Circuit board is my guess. May be cheaper/easier to get new microwave. My first one lasted about 15 yrs--and the circuit board (touchpad) died. Bought new microwave oven.

Dec 12, 2005 | Emerson MW8775W Microwave Oven

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