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Microwave turns on when I open the door - Whirlpool MT4155SP Microwave Oven

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Samsung microwave turns on when open door


The switch assembly is somehow staying "closed" satisfying the interlock and enabling it to run.
Disassemble the unit, beware specially of the high voltage capacitor, if you aren't comfortable or competent, buy a new microwave. If you are mechanically inclined, disassemble the unit until the switch assembly is accessible; it will have the door latch attached to it.
The switch is either broken or something? exogenous is keeping it closed. It may have come loose due to the door slamming?.
It's a simple fix. I am certainl you will be successful.

May 04, 2017 | Samsung Microwave Ovens

1 Answer

Turns on when door opened


There is an power interlock inside the oven that breaks the power connection to the magnetron when the door is open. Most likely, something is stopping the switch from opening.

Check for a small plastic probe on the door that may have broken off inside the oven keeping the circuit made. Otherwise, open the oven and see is some foreign object is keeping the connection made or if the interlock needs to be cleaned out so it can function.

Jul 11, 2015 | Samsung SMH1816S 1.8 Cu Ft Over The Range...

1 Answer

Why won't my interior microwave light turn off and my microwave won't start?


It sounds to me that your door switches aren't working.Your oven is protected by a couple of switches that engage when you open or close the door.They control a couple of safety features and also your interior light.One of them seems defective.

Dec 17, 2014 | KitchenAid Microwave Ovens

1 Answer

Why woll sharp R-530E microwave not turn off when door opens.


It is very dangerous, you're filling the room with radiation, may be best to just dump that one, unless you are a little bit competant with mechanical stuff, in which case it's probably the sensor on the door not registering that it is open,. might be a physical thing, i.e. moved a little. or maybe a electronic thing, requiring a new sensor itself.

Sep 04, 2014 | Sharp R-530ES Microwave Oven

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Turns on when door opened


this is dangerous; replace or adjust your door switches the interlock switches should only allow you to turn on the microwave when the door is closed

May 29, 2009 | Jenn-Air JMC8100 Microwave Oven

1 Answer

MICROWAVE TURNS ON WHEN DOOR IS OPENED.


This is usually caused by either a bad door switch, a loose door switch mount, or a problem on the control panel.

Even though a door switch clicks, it may still be bad inside.

Door switches are most often damaged by opening the door while it's cooking (instead of pressing Stop / Clear first) or food
/ grease debris in the switch.

If you or a friend decide to look into it, we have critical information on safety, disassembly and door switches at our site, linked here on Fixya: http://tinyurl.com/yzjozk

Nov 05, 2007 | Panasonic NN-S254BF Microwave Oven

1 Answer

My Microwave flickers and buzzes


This problem normaly happens when the door is not closed properly for a long time and flashing and buzzing starts to give user a indication for same. Allthough it is not risky as microwave oven has safty door switches wich does not allow oven to operate while door is open. Take care and close the door properly before you leave kitchen..

Aug 02, 2007 | Kenmore 66469 / 66462 / 66464 Microwave...

1 Answer

Microwave seems to turn on when door latch is opened


What's happening is you are activating one door switch a little before the other, and that is causing your light, fan, and turntable to come on. The plastic parts are not perfectly rigid, so they flex a little when you press the button, and that causes the lag to be more apparent. Even if you press the door open faster and look really close, you may notice the light, fan, and turntable coming on for a split second. That's perfectly normal. The relay on the control board must also be turned on before it will actually be cooking.

Feb 22, 2007 | GE Spacemaker JVM1640SJ Microwave Oven

1 Answer

Microwave works with door open


If the top is open, the upper door switch should be open and the high voltage section should not be energized. That's the way it's *supposed* to work. But that buzzing is worrysome! Does the turntable turn during this condition? Does the inside light come on? How about the fan? If not, then I would doubt that it's cooking. If so, some models will do this. It's not uncommon to notice that the fan and light will try to come on for a split second when you shut the door. This would not indicate a problem. It has to do with the timing of the door switches and a replay on the board. If it's still under full warranty, it wouldn't hurt to call a GE-authorized servicer.

Nov 07, 2006 | LG LRMM1430 Microwave Oven

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