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Ikea Microwave turns on by itself

When your IKEA microwave is turning on by itself, first determine whether you are hearing the exhaust fan or the microwave is actually starting a cooking cycle. On an over-the-range microwave, the vent fan may turn on automatically while you cook on the stovetop because a thermostat detects heat, then shut off after the microwave cools. If the touchpad works correctly and the unit starts operating without a command, the main control board is the most likely cause and may need replacement. A faulty interlock switch can also cause this problem. Test the door switches with a multimeter, and inspect the switch holder behind the control panel for damage or misalignment that prevents the switches from engaging correctly. Less commonly, intermittent contact in the touchpad and control panel button circuits can make the microwave start by itself, requiring replacement of the touchpad, control panel, or both. Enter your model number to find the exact replacement part for your IKEA microwave. Any repair that requires removing the outer cabinet or accessing internal components must be handled carefully because the high-voltage capacitor can store a lethal charge even after unplugging. Proper capacitor discharge is required, and a qualified technician may be needed if you are not familiar with the procedure.

01 - Ikea Microwave Main Control Board

First, make sure that the touchpad is working properly. If the touchpad is working properly, the main control board is likely at fault. If the control board is defective, replace it.
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Shop all Ikea Microwave Main Control Board Parts
Top Solution

02 - Microwave cooling down during stovetop cooking

Most over-the-range microwaves have a vent fan thermostat that will turn the vent fan on automatically to keep the microwave from overheating. The fan will shut off after the microwave cools back down.
Highly Likely

03 - Ikea Microwave Interlock Switch

A microwave that turns on by itself can be caused by a malfunctioning interlock switch. You can use a multimeter to test the interlock switches to determine if they are functioning appropriately and replace if necessary.
Shop all Ikea Microwave Interlock Switch Parts
Common

04 - Ikea Microwave Switch Holder

The microwave switch holder is the component that houses the door switches behind the control panel. If the switch holder is damaged or misaligned, the switches may not be properly engaged which could cause the microwave to turn on by itself. You will need to uninstall the control panel and inspect the switch holder to confirm it is in good condition and secured properly. Replace the switch holder with a new one if necessary.
Shop all Ikea Microwave Switch Holder Parts
Common

05 - Ikea Microwave Touchpad and Control Panel

It’s possible that the touchpad and control panel button circuits are coming into contact with each other intermittently which could cause the microwave to turn on by itself. If this happens, the touchpad and control panel will need to be replaced.
Shop all Ikea Microwave Touchpad and Control Panel Parts
Less Common

06 - Ikea Microwave Touchpad

It’s possible that the touchpad button circuits are coming into contact with each other intermittently which could cause the microwave to turn on by itself. If this happens, the touchpad will need to be replaced.
Shop all Ikea Microwave Touchpad Parts
Less Common

Frequently Asked Questions

Why does my Ikea microwave turn on by itself?
Why does my Ikea microwave fan turn on by itself?
What should I check if my Ikea microwave turns on when the door opens?
Can a bad touchpad or control board make an Ikea microwave turn on by itself?
How do I find the correct Ikea microwave part for this problem?

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