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Learn A Lesson Why Your Microwave Turns On When Door Is Closed – Helpful Tips 2023

You may have been frustrated in the past when your microwave turned on while you were closing the door. This is a safety feature because it prevents potential injury from microwaves during cooking and cleaning cycles. The sensor inside of your microwave detects whether or not the door is closed and will turn off if there is any space between the door and oven, but sometimes this doesn’t work as planned. 

Our blog post will teach you how to prevent your microwave from turning on accidentally by installing a simple solution. 

  • Microwave Turns On When Door Is Closed
  • Possible Causes For This Problem That Microwave Won’t Turn Off When Door Is Closed
  • Solutions To Fix The Issue
  • Tips For Preventing A Similar Incident From Happening Again
  • Our Product Suggestions: Best Replacement Microwave 2023
  • Frequently Answered Questions (FAQs)
  • Conclusion

Microwave Turns On When Door Is Closed

The microwave oven turns on automatically – any time you open the door, even if you don’t use it! The microwave turns on when the door is closed. Why does it happen? Find out here why your Microwave Oven starts by itself.

microwave turns on when door is closed
Learn A Lesson Why Your Microwave Turns On When Door Is Closed - Helpful Tips [year] 17

Read this article for helpful tips. The microwave oven turns on automatically. Microwaves are electromagnetic radiations emitted from a device for heating food. Microwaves heat food using non-thermal energy about 1% of the original power consumed to heat the food. Microwaves can penetrate all types of materials, such as plastic, wood, thick metal, and glass windows. It just so happens that they cannot penetrate metal sheets or screens directly in front of the rays because their waves reflect off them. 

Possible Causes For This Problem That Microwave Won’t Turn Off When Door Is Closed

Microwave Oven starts by itself – Possible causes for this problem that microwave won’t turn off when the door is closed are:

There Is No Safety Switch Inside The Microwave Oven

The microwave turns on when the door opens because of the safety switch.  The microwave oven turns on automatically due to a faulty timer or thermostat control. Microwaves are electromagnetic radiation emitted from a device for heating food, not liquids in glass mugs, plastics, and containers with lead-based paints that should be avoided as they can cause harm to humans.

There is no safety switch inside Microwave Oven which may have gotten defective due to age or it was never installed since the manufacturing of the Microwave Oven. Microwavable foods normally do not contain water. Microwaves get absorbed by water molecules which causes the food to heat up. 

Microwavable foods are cooked in plastic containers which contain chemicals that can leach into the food as it gets heated. Microwaves have no penetration power when they pass through a thick metal sheet or screen directly in front of them because their waves reflect off them as light does from mirrors.  Microwaves penetrate the food, cook it and make it hot but Microwaves do not cook glass, ceramic or plastic containers that have been specially treated to be microwave-safe. 

Stuck Switches

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Learn A Lesson Why Your Microwave Turns On When Door Is Closed - Helpful Tips [year] 18

One of the most common reasons why my microwave turns on when I open the door could be stuck switches. The interlock switch in this door may get jammed, or if you can’t find anything wrong inside, it’s possible that one wayward button has been pressed too many times and turned off again without anyone noticing – but don’t worry! This is not a safety issue; just unjam the switch with some WD40 spray (just make sure to wear gloves) before pressing any other buttons.

One of the biggest fears when running an appliance we use every day like our microwaves is for them to turn themselves on while someone isn’t there home watching out for dinner burns or worse yet they start popping popcorn without us asking first! 

Misunderstanding Control Panel

A microwave is a simple device that most people use as an on-the-go cooking option for their fast food cravings. But what if your microwave turns itself on without you telling it to? This can be frustrating and potentially dangerous, especially when other household appliances are nearby like the stove or oven! Sometimes this issue happens because of defective touchpad controls or control panels that need replacing by a professional ASAP in order to fix the problem before anything gets damaged.

It describes how sometimes problems with microwaves may arise due to issues within its system such as faulty wiring connectors, power pads (touchpads), circuit boards, etc., depending upon where they occur more commonly than others; however, none of these fixes should take place.

Heat Sensor Is Not Working Properly

Microwaves can turn on by themselves- but what causes this to happen? One cause could be an issue with the heat sensor panel. Some microwaves are sensitive enough that a person’s body warmth might be able to trigger them, without touching anything! Another possible culprit is overhanging pans or any other object too close to the microwave; their proximity could keep it turned on and cooking even when nobody wanted it.

Membrane Keypad

microwave turns on when door is closed
Learn A Lesson Why Your Microwave Turns On When Door Is Closed - Helpful Tips [year] 19

Microwaves have a variety of settings, but sometimes they can be very finicky. When it comes to microwaving food or beverages in the microwave, you’re supposed to put them on an appropriate plate and let it work its magic from there – unless your microwave has a membrane keypad that starts up the power all by itself! 

If this is happening with your appliance then don’t worry because we’ve got some advice for what might need fixing: if so many parts are malfunctioning then maybe just one needs replacing (usually control panel frame assembly) which will come with newly attached membranes; while waiting for shipment though, do not hesitate- take matters into own hands and replace old broken keys yourself – at least until replacements arrive!


If your microwave is not shutting off when you press the stop or pause button but does shut down once you open the door, there may be a problem with its smartboard. A sign of this malfunction can often be seen in that it will no longer power and deactivate all relays upon completion of a function such as cooking time set on the touchscreen interface. 

This means one method to check if this is indeed an issue would be by testing for continuity across each relay’s terminal points using any simple digital multimeter where pins are touching together back-to-back inside probe tips (needle nose pliers work well).

To find out what might cause these issues while microwaving food items like popcorn kernels—or other usually low voltage appliance devices.

Solutions To Fix The Issue

Check Whether The Device Has A Safety Switch Inside The Microwave Oven. 

If it does, there could be something wrong with it.   Microwave turns on when the door is closed Microwaves turn off when you open it. Microwaves heat metal objects, especially the ones with non-metal handles like spoons and forks, so they cause a circuit breaker to reset. The microwave may need to be replaced if this occurs again after fixing the issue. Microwaves have an automatic reset built-in for overload problems but not always for heating issues. 

Microwaves only reach about 600 degrees and are not meant to brown food or cook meat. This could be a sign of something wrong with your oven rather than an error. Microwave turns off due to a safety mechanism. This happens because the air inside is heated by microwaves that make it expand rapidly and rush out through cracks where the door and the microwave are joined. Microwave turns on by itself (not safety mechanism) 

microwave turns on when door is closed
Learn A Lesson Why Your Microwave Turns On When Door Is Closed - Helpful Tips [year] 20

Microwaves generally have a fan inside that keeps them cool, if the cooling equipment is not working you can expect some problems with your device. Solutions for this problem include: Make sure the microwave is properly grounded unless it’s installed in an ungrounded outlet. For microwaves mounted over ranges, make sure the mounting bolts are tightened enough to secure their position tightly against the range hood. 

As well as this, there should be only one screw that mounts both parts of the range hood together—this one will need to be tightened regularly to keep everything from caving in on top of your microwave. Microwaves won’t turn on Microwaves can be set to turn off automatically after a set period. Microwaves generally have a fan inside that keeps it cool, if the cooling equipment is not working you can expect some problems with your device

If there isn’t any power being supplied to the outlet(s) where the microwave is plugged in, make sure all of them are switched on. Or replace faulty fuse boxes.

Replacing The Unsuitable Parts

You’re cooking enough for a small army, but your microwave is not working? There are two things that can cause this: the control board or the door interlock switch. Either one could be tested with a multimeter, but because you know what’s wrong there may not need to do so – just replace it! Unfortunately, microwaves hold lethal electrical charges even when unplugged and cannot always discharge on their own. If you have proper training in electricity safety then proceed at your own risk if testing proves necessary; otherwise, send an electrician over right away.

The problem might either lie within the control board of your microwave or its door-interlocking mechanism itself depending on symptoms displayed by device failure (namely whether power was lost suddenly).

To replace the control panel, you need to remove the outer cabinet and will find it located behind the touchpad. If an attempt at testing out your control board proves unsuccessful then there may be a problem with what’s called “relay switches.” Relays are small pieces of metal that can easily corrode or break from wear-and-tear over time – even if they’re plugged in! Luckily though, this is usually just a quick fix as only these switchboards would require replacement. 

microwave turns on when door is closed
Learn A Lesson Why Your Microwave Turns On When Door Is Closed - Helpful Tips [year] 21

But beware: microwaves still hold a lethal electrical charge when unplugged for safety reasons. Discharging such current into yourself could lead to death so make sure not to try unless properly trained first!

Replacing the door interlock switch is not as difficult, but it can be a little more challenging to find. This means that you will need to remove all of your cabinets and locate where the latch touches when closed so that you know which area needs fixing. The screws are hidden in this place behind some plastic covers on either side near or even below if there’s enough room for them due to their size being large because they have been around longer than most other parts like touchpads and control boards 

The new part should come with special screwdriver bits needed specifically for these types of applications, so an additional purchase may not be necessary depending upon how many different sizes are required by company standards. 

Unlike the control board, if an oven is operating with its door open it can only really mean there’s something wrong with the switch. However, you may test to see what happens as some microwaves have problems even when they’re not being used which might be caused by faulty wiring in your home, and also because sometimes people forget about them or turn off their power switches thinking that they are turned off for good.

Tips For Preventing A Similar Incident From Happening Again

Here are a few useful Microwave tips for preventing a similar incident. 

Microwaves shouldn’t be used to warm up food or drinks, they only cook from the outside portion towards the center Microwaves should not be blocked by metal dishes as this will cause the Microwave oven to work very hard and could permanently damage your Microwave. 

When cooking foods of different sizes in the microwave, use proper containers or just leave enough space for expansion between contents. Always let items cool before storing them in Microwaves. Be sure when putting food in the Microwave that you put it on top of the cooking tray/plate/dish cover so that microwave heat can also get absorbed by this object rather than escaping into the open air. 

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If your Microwave has a turntable and you are microwaving large items then turn your Microwave to 50% power. Microwaves do not cook food from the inside: Microwaved food is cooked from the outside towards the center, so stirring before and during cooking is important to prevent uneven results Microwaves have power levels that can vary from 100 watts to over 1000 watts Microwaves do not use convection or friction Microwaves are usually manufactured under license and you will need a special microwave repairman to fix problems with Microwave Ovens.

Check your Microwave if it has an Auto-Off feature. Microwaves automatically turn off after a certain period of time. If the Microwave is not set to auto-off, check its control panel and set the automatic shutoff timer for 2 minutes or higher. The Microwave will beep when the timer reaches 0. These steps can prevent instances where somebody leaves food in the Microwave for too long (or forgets about it), which could potentially overheat and cause problems with the microwave.

If you have a digital or electronic Microwave, ensure that you are using correct power levels and times for each type of food being cooked, as these units use sensors and buttons to automatically determine how long and at what power level to cook the required food.  Microwaves cook by using microwaves which are not the same as those other ovens used to bake cakes and roast meat. Microwave cooking uses a lower temperature, so foods must be covered properly or they will dry out. Microwaves can do wonders but you have to learn how to use them!.

Microwaves are very easy to use but people sometimes forget the simplest of things. Microwave cooking requires that you first place food in a suitable container (or covering) and leave enough room for expansion, during microwaving. Microwaves also work best on flat surfaces – do not overload the Microwave with too much food at once or put it over-filled containers directly on the Microwave, because this could cause uneven heating and damage your Microwave. 

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Learn A Lesson Why Your Microwave Turns On When Door Is Closed - Helpful Tips [year] 23

If a piece of filter paper is placed close to the entry point of the microwave, it will move/vibrate / swing if there are any cracks in the Microwave causing leakage of microwaves. Placing an object that absorbs microwaves (such as aluminum foil, dish, or tray) will cause damage to your Microwave (as it will absorb microwaves instead of reflecting them). Do not use detergent or soapy water in Microwave. 

Do not chill food and drinks in Microwave, this will not cool them faster as Microwaves cannot convert thermal energy into mechanical energy i.e. cold due to their low power levels Microwaves do not cook from the inside out – food is cooked from the outside towards the center, so stirring before and during cooking is important to prevent uneven results.

If you notice that your Microwave isn’t heating properly: If there’s a safety interlock switch installed on your Microwave oven door that prevents microwave operation if the door isn’t properly closed, the switch may need to be properly adjusted. Microwaves use a lot of electricity but they cannot replace your conventional ovens and cookers. 

Microwave is only used for heating / reheating / cooking whereas Oven / Cooker can be used for all types of food preparation Microwave is not a waterproof device so do not submerge it in water Microwaves are more convenient and easy to use, but unfortunately, there isn’t any scientific evidence proving that microwaved food is healthier or safer than conventionally cooked foods Microwaves work better when they have food inside them (as opposed to empty) Microwaves don’t dry out food from the inside, this would require temperatures higher than those generated by Microwaves. 

Microwave ovens have power levels that can vary from 100 watts to over 1000 watts Microwaves do not cook food evenly, they heat it up unevenly Microwaves are used for heating & reheating / cooking purposes only Microwaves do not use convection or friction Microwaves are usually manufactured under license and you will need a special microwave repairman to fix problems with Microwave Oven.

Our Product Suggestions: Best Replacement Microwave 2023

In case you can not fix the problems that your microwave turns on when the door is closed. We have a list of the best microwaves for you to replace with the old ones. The best microwaves of 2023 are all about innovation. 

The new wave of appliances is no longer just about being able to heat up food, but also allowing you to cook without any hassle. These futuristic devices can do everything from baking a cake to making pasta with ease. Our team has researched and analyzed the top models in order for you to make an educated choice when it comes time for your purchase!

Panasonic NN-GN68KS Countertop Microwave

Panasonic NN-GN68KS Countertop Microwave Oven 2-in-1 FlashXpress Broiler, Inverter Technology for Even Cooking and Smart Genius Sensor, 1000W, 1.2 cu.ft Microwave-NN-GN68KS (Stainless Steel/Silver)
  • Flash press broiler allows the microwave oven to be used for broiling with grill like results. The specially designed broiling rack lifts food close to infrared grilling element for a crispy brown finish
  • Genius sensor cooking built in automatic genius sensor adjusts power and times based on different foods; other advantages include 18 Preset menu items, quick minute timer, delay start and child safety lock
  • Microwave controls 7 preset auto cook menu items, 13. 4 inches Turntable; delay start and timer; more/less control; child safety lock; quick 30Sec and popcorn button with 3 cooking levels
  • Minimum countertop footprint smart, compact microwave broiler design devotes less space to electronics and far more interior capacity.Just wipe with a damp cloth
  • Rated output power (microwave): 1000W, rated output power (broiler): 1100W, rated Voltage 120V 60Hertz

The Sharp ZSMC0912BS 900W Countertop Microwave Oven is perfect for powering through a short stack of eggs or prepping an entire meal with its 11 power levels and included sensor cooking features. Made from stainless steel, this easy-to-feel counter microwave oven can be lifted off your kitchen counter to accommodate taller people. 

The 1.1 cubic foot capacity means you’ll have ample space for any dish you’re planning on making at home and the Turbo Defrost will cook food up to 50% quicker than other models to save time in the kitchen. With the control lock feature, you won’t accidentally bump buttons when removing the oven’s dish during cooking or defrosting cycles so that food items stay timed perfectly.

Standard benefits:

– Food cooks evenly for a crispy brown finish.

– The rack is designed to lift food close to the infrared grilling element and has a special coating that prevents sticking. 

– 18 preset menu items mean you can cook your favorite foods quickly and easily, with no guesswork. 

Emotional benefits:

– Get restaurant-quality results in the comfort of your own home. 

– Cook all your favorites without any hassle or stress–just set it up, press start, and relax!

Sharp ZSMC0912BS Sharp 900W Countertop Microwave Oven

Sharp Microwaves ZSMC0912BS Sharp 900W Countertop Microwave Oven, 0.9 Cubic Foot, Stainless Steel
  • Premium blue LED display
  • Convenient "+30 second" key for instant start
  • Time cook, time defrost and auto defrost. Interior Dimensions (wxhxd):12.4 x 8.7x 13.7 inches
  • 10.6" carousel turntable for even cooking and reheating
  • Convenient popcorn, Beverage and reheat settings

This microwave oven is perfect for small kitchens or more space-conscious homes. Clean lines and simple control buttons make this such an easy appliance to use, while its stainless steel finish lets it match any kitchen contrast. The Sharp ZSMC0912BS Countertop Microwave Oven has 0.9 cubic feet of capacity so you can still cook several things at once without worrying about storing leftovers in the fridge for weeks on end if your oven is unable to fit them all nicely like larger microwaves would be able to do. It also comes equipped with preprogrammed settings!

Standard benefits:

– Cooks food up to 30% faster. 

– Saves time and money on wasted leftovers. 

– Keep your kitchen cool with low energy use.

Emotional benefits:

– Stay in control of your kitchen with easy settings and one-touch cooking features.

Toshiba EM925A5A-BS Microwave Oven

TOSHIBA EM925A5A-BS Countertop Microwave Oven, 0.9 Cu Ft With 10.6 Inch Removable Turntable, 900W, 6 Auto Menus, Mute Function & ECO Mode, Child Lock, LED Lighting, Black Stainless Steel
  • Stylish black stainless steel with timeless design kitchen appliances; Rated voltage: 120V - 60Hz; Rated input power (Microwave ovens): 1350W; Rated output power (Microwave ovens): 900W
  • 2Pre-programmed menu for 6 popular foods like popcorn, pizza, potato and more, also defrost by weight and time
  • One touch start - quick access to start the microwave from 1 to 6 minutes cooking at full power
  • Equipped with power-saving eco mode, sound on/off option and child safety lock
  • Microwave size-compact footprint but large capacity: 0.9 Cu. Ft., 10.6 inch removable turntable fits a 10 inch pizza, 900 watts with 10 power settings, clock, and kitchen timer

Toshiba’s EM925A5A-BS Microwave Oven will make any foodie drool. It features 13 power levels, a 10.6-inch turntable, time and weight cook settings, express keys with a control lock for touchpad controls. 

Whether you need to reheat leftovers or heat up your dinner from the frozen section of the grocery store, this microwave is versatile while always making sure food is cooked just right with consistent dish temperatures and accurate cooking times. If you’re in the market for a sleek stainless steel oven with black accents that can be installed at counter level or wall mounted then this model is perfect for every meal!

Standard benefits:

– The microwave is powerful and has many settings. 

– It will make cooking time quicker. 

Emotional benefits:

– You’ll be able to cook your favorite foods in a shorter amount of time with less effort

Black+Decker Em720cb7 Digital Microwave

BLACK+DECKER EM720CB7 Digital Microwave Oven with Turntable Push-Button Door, Child Safety Lock, 700W, Stainless Steel, 0.7 Cu.ft
  • Pre-programmed buttons for popcorn, potato, pizza, frozen vegetable, beverage and dinner plate
  • 700 Watts with 10 power settings, clock and kitchen timer, 30 Seconds Express Cooking
  • Large LED digital display, easy-to-read control panel, child safety lock, interior light, removable 10” glass turntable
  • Push-button door release for easy access
  • Dimensions (W x D x H): 17.3” x 13.0” x 10.2”

Compact and practical, the Black+Decker Em720cb7 Digital Microwave oven is conveniently sized for use over the stove or countertop. A lighted display menu makes it a breeze to pick your favorite dish with presets for every type of cuisine including pizzas, frozen dinners, and even popcorn! 

This model includes a five-setting cook menu for meats and fish as well as a three-setting laboratory menu with Functions like a lab mix. Add in steam cooking modes, quick defrosting facilities, sensor cook settings, and DoublePositive technology allowing you to toast two pieces of bread at once before warming them up—you’ll never want to go back to microwaves without these features again!

Standard benefits:

– Cook food quickly and evenly. 

– Large LED digital display for easy readability. 

– Push-button door release makes it easy to get inside the oven. 

Emotional benefits:

– Cooking is much more enjoyable with this oven because you don’t have to worry about overcooking or burning your food.

Amazon Basics Microwave

Amazon Basics Microwave, Small, 0.7 Cu. Ft, 700W, Works with Alexa
  • Now it’s easier to defrost vegetables, make popcorn, cook potatoes, and reheat rice. With an Echo device (not included), quick-cook voice presets and a simplified keypad let you just ask Alexa to start microwaving.
  • Compact size saves counter space, plus 10 power levels, a kitchen timer, a child lock, and a turntable.
  • Alexa is always getting smarter and adding new presets.
  • External dimensions (Width x Height x Depth): 17.3 in. x 10.1 in. x 14.1 in. ; internal dimensions (10 7/8 in. x 6 7/8 in. x 10” in.); Turntable (Diameter): 10 in. ; Maximum Popcorn bag size: 3 oz

The Amazon Basics Microwave is a quality countertop appliance that has been designed to meet your needs. This impressive microwave oven features 10 different settings, 700 watts of power, and a replaceable filter. The sleek black design fits in with any kitchen and the control lock ensures peace of mind when you have children handling these devices. If you’re looking for high-end microwaves from top brands at low prices, we’ve got what you need! Check out our selection for more information about this outstanding device today!

Standard benefits:

– You’ll save time cooking. 

– Your microwave will last longer because it’s more efficient. 

Emotional benefits: 

– Cook healthy meals for your family in less time. 

– Spend more quality time with loved ones instead of waiting for food to cook.

Frequently Answered Questions (FAQs)

What Is Your Opinion On The Safety Of Microwaves?

Microwaves have been greatly misunderstood. They are seen as dangerous by some people, but they actually keep you safe and healthy! Microwaving your food can prevent the formation of harmful compounds that other cooking methods cannot do (such as when meat is fried or grilled). It also has no adverse effects on foods’ nutritional content like boiling does. 

With microwaves, it’s easy to quickly prepare a meal for yourself in between work meetings with an inexpensive microwaveable dish from the grocery store’s freezer section – which doesn’t use any electricity at all since it heats up using light waves instead of heat generated through electrical currents.

What Is The Most Common Reason For A Microwave To Keep Running?

There are some reasons that will influence your microwave that will make your microwave keep operating. Some of the most common reasons will be listed below.

– The appliance is on a self-clean cycle. 

– The door isn’t closed properly.  

– A button was accidentally pressed.

Is It Bad For Your Microwave If You Leave The Door Open While It’s Running?

– Yes, it is bad for your microwave if you leave the door open while it is running since this problem will cause excessive heating and cooking.

Do You Know What Happens If You Microwave Nothing?

– The magnetron in the microwave will emit radiation, which is not good for your health. Then be careful when you are not using the microwave.

What Are The Signs That A Magnetron Is Bad?

– The magnetron is experiencing intermittent power surges. 

– The food has an odd flavor, such as burnt or metallic. 

– The microwave will not heat up food properly, and the inside of the oven may be too hot to touch.


We hope this blog post has been helpful in understanding why your microwave is turning on when you close the door. This is actually a safety feature because it prevents potential injury from microwaves that can be emitted during these cycles. In this blog post, we’ve discussed how to fix and prevent this problem with some simple solutions like making sure there are no loose wires near where power enters into the appliance, turning off an electric breaker if possible before opening doors to avoid accidental contact with electrical current and unplugging appliances as soon as they are not being used so they don’t accidentally turn back on again. Moreover, be careful when putting cups or everything inside your oven or microwave. We hope these ideas will help keep you safe!




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