Choose Product
Identify Problem
03
Find Solutions
HomeRepair HelpFrigidaire Microwave RepairFrigidaire Microwave turns on by itself Repair

Frigidaire Microwave turns on by itself

Is your Frigidaire microwave turning on by itself? First determine whether only the vent fan is running. On an over-the-range microwave, the vent fan may turn on automatically while stovetop cooking produces heat, then shut off after the microwave cools. If the microwave starts cooking or the touchpad is not responding correctly, the main control board is the most likely cause after confirming the touchpad works properly. A faulty interlock switch can also make the microwave turn on by itself, so test the door switches with a multimeter and replace the switch if needed. Next, inspect the switch holder behind the control panel. A damaged or misaligned holder may prevent the interlock switches from engaging correctly. Less commonly, the touchpad and control panel circuits may intermittently contact each other, requiring replacement of the touchpad and control panel or the touchpad alone. Enter your Frigidaire 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 when unplugged. Proper capacitor discharge is required before interior work, and a qualified technician should perform the repair if you are not familiar with that procedure.

01 - Frigidaire 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.
Enter model number to search for the required part specific to your product
Need help finding your model number?
Shop all Frigidaire 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 - Frigidaire 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 Frigidaire Microwave Interlock Switch Parts
Common

04 - Frigidaire 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 Frigidaire Microwave Switch Holder Parts
Common

05 - Frigidaire 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 Frigidaire Microwave Touchpad and Control Panel Parts
Less Common

06 - Frigidaire 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 Frigidaire Microwave Touchpad Parts
Less Common

Frequently Asked Questions

Why does my Frigidaire over-the-range microwave fan turn on by itself?
Can a Frigidaire microwave turn on by itself when the door is closed or open?
How do I test the interlock switches when my microwave keeps turning on by itself?
Could the touchpad or control board cause my microwave to turn on by itself?
How do I find the correct Frigidaire microwave part for this repair?

Shop by Frigidaire Microwave Parts

Frigidaire Microwave Adhesive Replacement Parts
Frigidaire Microwave Axle, Roller, Shaft, Wheel Replacement Parts
Frigidaire Microwave Bearing Replacement Parts
Frigidaire Microwave Belt Replacement Parts
Frigidaire Microwave Blade Replacement Parts
Frigidaire Microwave Blower Wheel & Fan Blade Replacement Parts
Frigidaire Microwave Bracket & Flange Replacement Parts
Frigidaire Microwave Cap, Lid & Cover Replacement Parts
Frigidaire Microwave Capacitor Replacement Parts
Frigidaire Microwave Chassis Replacement Parts
Frigidaire Microwave Circuit Board & Timer Replacement Parts
Frigidaire Microwave Diode, Magnetron & Resistor Replacement Parts
Frigidaire Microwave Door Replacement Parts
Frigidaire Microwave Duct & Venting Replacement Parts
Frigidaire Microwave Fastener Replacement Parts
Frigidaire Microwave Filter Replacement Parts
Frigidaire Microwave Fuse, Thermal Fuse & Breaker Replacement Parts
Frigidaire Microwave Gasket & Seal Replacement Parts
Frigidaire Microwave Glass Tray, Coupler & Support Roller Replacement Parts
Frigidaire Microwave Grille & Kickplate Replacement Parts
Frigidaire Microwave Handle Replacement Parts
Frigidaire Microwave Heating Element Replacement Parts
Frigidaire Microwave Hinge Replacement Parts
Frigidaire Microwave Insulation Replacement Parts
Frigidaire Microwave Knob, Dial & Button Replacement Parts
Frigidaire Microwave Latch Replacement Parts
Frigidaire Microwave Leg, Foot & Caster Replacement Parts
Frigidaire Microwave Lighting & Light Bulb Replacement Parts
Frigidaire Microwave Manuals, Care Guides & Literature Replacement Parts
Frigidaire Microwave Miscellaneous Replacement Parts
Frigidaire Microwave Motor Replacement Parts
Frigidaire Microwave Oven Rack & Broiler Pan Replacement Parts

Shop by Popular Frigidaire Microwave Models

Frigidaire FFCM0724LB Microwave Parts
Frigidaire FFCM0724LW Microwave Parts
Frigidaire FFCM0734LS Microwave Parts
Frigidaire FFCM0934LB Microwave Parts
Frigidaire FFCM0934LS Microwave Parts
Frigidaire FFCM0934LW Microwave Parts
Frigidaire FFMV162LBA Microwave Parts
Frigidaire FFMV162LSA Microwave Parts
Frigidaire FFMV162LWA Microwave Parts
Frigidaire FFMV1645TSA Microwave Parts
Frigidaire FFMV164LSA Microwave Parts
Frigidaire FGMV174KFA Microwave Parts
Frigidaire FGMV174KFB Microwave Parts
Frigidaire FGMV174KFC Microwave Parts
Frigidaire FGMV175QFA Microwave Parts
Frigidaire FGMV17WNVFA Microwave Parts
View more
Repair Clinic
Join Repair Clinic's VIP email list for 10% off, plus other discounts and tips!
Our Story

Family-owned and operated since 1912, Burke America Parts Group is the longest-running genuine appliance, HVAC, and outdoor power equipment parts solution in North America. At Repair Clinic, we're proud to be an international brand trusted by the pros as well as the DIY community.

About Repair Clinic
Customer StoriesRepair Parts BrandsDIY Repair BlogIn the News
Click for the BBB Business Review of this Appliances - Major - Parts & Supplies in Canton MI
Quick Links
Shipping Information365 Day Return PolicyRetail Location & HoursContact UsTrack OrderReviewsRepair Clinic Pro
Social Media
Privacy PolicyDo Not Sell/Share My Personal InformationTerms & ConditionsSitemapGet 10% Off
© 2026 RepairClinic.com