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Hotpoint Microwave won't turn off

When a Hotpoint microwave won't turn off, keeps running, or the fan won't shut off, the most likely cause is a defective door switch. Most models use three or four switches, including the primary door switch, secondary door switch, and monitor switch, that activate in sequence when the door closes. A shorted switch can allow the fan to run even when the door is open. Test each door switch for continuity with a multimeter and replace any switch that fails. If the switches test good, the user control and display board may not be registering the cancel or off button. If some buttons work but others do not, the touchpad or control panel is likely defective. If none of the buttons respond correctly, replace the user control and display board. A shorted relay or triac on the main control board can also keep components running after the microwave is turned off. Any repair that requires opening the outer cabinet carries a serious shock hazard because the high-voltage capacitor can store a lethal charge even after the microwave is unplugged. Proper capacitor discharge is required, so use a qualified technician if you are not familiar with this procedure. Enter your model number to find the exact Hotpoint replacement part for your microwave.

01 - Hotpoint Microwave Door Switch

Most microwaves have three or four door switches. When the microwave door closes, the door switches actuate in sequence to ensure that the door is closed properly. If any of the door switches fail, the microwave will not start or heat. In some rare cases a door switch may short out and allow the fan to run even when the door is opened. To determine if any of the door switches are defective, use a multimeter to test each of the switches for continuity. If any of the door switches lack continuity, replace the switch. (Caution: The microwave oven can store thousands of volts of electricity in its high voltage capacitor, even ...after the microwave oven has been unplugged. Due to the potential for electric shock, it is extremely dangerous to replace the electronic components in a microwave. Only a licensed technician should replace a door switch.)

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02 - Hotpoint Microwave User Control and Display Board

The cancel or off button on the user control and display board may not be activating. To determine if the control and display board is defective, try pressing each of the buttons on the control panel. If none of the buttons are responding correctly, replace the user control and display board.

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Highly Likely

03 - Hotpoint Microwave Touchpad and Control Panel

The cancel or off button on the control panel may not be activating when it's pressed. To determine if the touchpad and control panel are defective, try pressing each of the buttons on the control panel. If some of the buttons respond correctly while others don’t, replace the touchpad and control panel.

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Common

04 - Hotpoint Microwave Touchpad

The cancel or off button on the touchpad may not be activating. To determine if the touchpad is defective, try pressing each of the buttons on the control panel. If some of the buttons respond correctly while others don’t, replace the touchpad.

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Common

05 - Hotpoint Microwave Main Control Board

The main control board has relays that send power to several components to make the microwave work. If one or more of the relays or triacs short out, some of the components can keep running when the controls are turned off. (Caution: The microwave oven can store thousands of volts of electricity in its high voltage capacitor, even after the microwave oven has been unplugged. Due to the potential for electric shock, it is extremely dangerous to replace the electronic components in a microwave. Only a licensed technician should replace the main control board.)

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Common

06 - Hotpoint Microwave Control Board

The control board has relays that send power to several components to make the microwave work. If one or more of the relays or triacs short out, some of the components can keep running when the controls are turned off. While you can often replace just the control board, some microwave models sell control panels as an assembly with both the touchpad and control board included.

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Uncommon But Possible

Frequently Asked Questions

Why won't my Hotpoint microwave turn off?

Can a Hotpoint microwave turn on by itself when the door opens or closes?

How do I test a Hotpoint microwave door switch or touchpad?

Is the Hotpoint main control board the reason my microwave keeps running?

How can I find the correct Hotpoint microwave door switch or control part?

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