Parts for Kenmore 721.66993011 (72166993011, 721 66993011): Latch Board Parts

This holder/locker secures the appliance door latch assembly to keep the door aligned and closed during cycles. It restores proper latch engagement so the door stays shut and the unit can run safely. What it does:

• Supports and positions the door latch for reliable engagement
• Helps prevent the door from sagging or coming ajar during operation
• Commonly used when the door will not stay closed or latch properly
• Works with the latch assembly to maintain a tight door seal during cycles

• High-level replacement part; inspect surrounding latch and striker for damage before installing
• Power off and disconnect the appliance from the power source before starting repairs
• Use basic hand tools; retain all fasteners and observe their original placement

This door interlock micro switch is part of the microwave's latch assembly. It detects when the door is fully closed so the oven only runs when latched, helping restore safe, consistent start/stop operation.

• Senses door-latch position within the interlock assembly
• Cuts power when the door opens; permits operation when fully closed
• Helps resolve "won't start" complaints or stopping when the door is jostled
• Often fixes the need to press or lift the door to keep the unit running

• Unplug the microwave before servicing; high-voltage components can retain a dangerous charge.
• Access the interlock/latch bracket behind the control panel; note switch orientation and terminal labels (COM, NO/NC).
• Transfer wires to the new switch, secure it in the bracket, and ensure the actuator aligns with the door latch.
• Reassemble and test with a cup of water to ensure proper start/stop operation.

The Interlock Door Switch is an OEM part for LG microwaves. It is a safety component located on the door of the microwave designed to prevent the microwave from operating unless the door is securely closed. The interlock door switch works with the microwave's electronic control board to sense when the door is open or closed and allow or disallow operation accordingly.

Causes of a bad interlock door switch can include normal wear and tear from repeated opening and closing of the microwave door over time.

Symptoms of a bad interlock door switch include:

• The microwave runs or heats with the door open
• Error codes or diagnostic messages related to door sensors on the control board
• The microwave fails to operate even when the door is securely closed

This OEM LG part is also compatible with some Sears/Kenmore microwaves.