Parts for Whirlpool MT9114SFQ1: 04 - Interior Parts

Microwave has no power or won't heat? A blown thermal fuse is often the cause. This safety part protects against overheating. DIY repair in 30 minutes.

This door interlock switch is a safety micro switch that detects whether the microwave door is properly closed before allowing the unit to operate. It is a small, snap-action switch mounted near the door latch mechanism. Replace this switch if the microwave won't start, runs with the door open, or blows a fuse when the door is closed.

Microwave displays 'close door' message or won't start? The door interlock switch is likely failed. Moderate DIY repair—replace all 3 switches together.

The Switch is an OEM part for Whirlpool microwaves. It controls the turning on and off of power to the microwave during cooking cycles as well as detects positions within cycles to signal appropriate actuations of the microwave's magnetron, fans, and lights. The switch is a crucial electrical component that facilitates the fully automatic operation of preset cooking programs.  

Causes of a bad switch can include wear and tear over time or unexpected surges that cause electrical component failure.

Symptoms of a bad switch include:

• Cooking programs failing to advance properly or stopping mid-cycle unexpectedly
• The microwave failing to turn on or experiencing power issues  
• Random noises, humming, or lights occurring when the microwave is supposed to be idle
• Buttons or controls acting intermittently unresponsive

This OEM Whirlpool part can also be used on Maytag, KitchenAid, Jenn-Air, Amana, Magic Chef, Admiral, Norge, Roper, and Kenmore/Sears brand appliances.