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Ikea Microwave won't turn off

If your Ikea microwave won't turn off, keeps running, or seems stuck on after you press Cancel or Off, start with the door switch, the most likely cause. A failed primary, secondary, or monitor door switch can short and allow the fan or another function to keep running, even when the door opens. Test each switch for continuity and replace any switch that fails. If the switches work, the user control and display board may not be registering the Cancel button. When some control panel buttons respond but others do not, the touchpad and control panel or touchpad may be defective. A shorted relay or triac on the main control board can also continue sending power after the microwave should stop, although this is less common. Enter your Ikea microwave model number to find the exact replacement part for your appliance. Any repair that requires opening the outer cabinet must be handled carefully because the high-voltage capacitor can store a lethal charge even after the microwave is unplugged. Proper capacitor discharge is required before interior work, and a qualified technician should perform electronic control board or door switch repairs if you are not familiar with the procedure.

01 - Ikea 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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Top Solution

02 - Ikea 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 - Ikea 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 - Ikea 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 - Ikea 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 - Ikea 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 Ikea microwave turn off?
Can a bad microwave door switch cause the microwave to keep running?
What should I check if the Ikea microwave cancel button or touchpad is not working?
Is it safe to use an Ikea microwave that turns on by itself or runs with the door open?
How do I find the correct Ikea microwave door switch, touchpad, or control board?

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