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Microwave-is-on-but-not-heating, when your microwave turns on but does not heat up, it may mean the door switch is broken. the door switch signals other microwave components to supply power when closed, and to stop heating when open. the door switch can also be called an interlock switch.. This is another electrical component that can seem to be the problem when the microwave turns on but does not heat. it generates the frequency that is needed by the microwave to produce heat and cook food. therefore, when it is problematic, expect that the appliance will not heat up., microwave runs but does not heat if the microwave runs but is not heating, it could be one of many components. make sure the “timer” function was not inadvertently used. check to ensure the door is closed firmly..

Unplug your microwave from the electricity to ensure that it is safe to touch. remove or unplug the high voltage capacitor, if you don’t know how to identify the parts of the microwave, use the devices handbook or check if there are prints or writings on the microwave, this will go a long way., if your microwave oven doesn’t heat, you may have a problem with a door switch. the door switches, often referred to as interlock switches, provide power to the various components in the microwave when the door is in a closed position, and interrupt power when the door is open..

Detecting the malfunction and troubleshooting. check the power supply voltage. when the voltage drops below 215 volts – the microwave does not heat the food well enough., problem – you attempt use your microwave and instead of heating your food it just makes a buzzing noise. it is likely that it has a defective capacitor. a capacitor is a device that stores electricity. a microwave oven usually has a high-voltage capacitor that is central to the operation of the unit.

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