How do I test a dryer door switch?

To test, disconnect power to the dryer, remove the switch, and use a multimeter set to continuity. When the switch plunger is depressed (door closed position), it should show continuity. When the plunger is released (door open position), it should show an open circuit or no continuity. Replace if it fails this test.

Can a dryer run with a bad door switch?

Typically, a faulty door switch will prevent the dryer from starting at all, as it won't signal that the door is safely closed. In rare instances, if the switch fails in a 'closed' position, the dryer might run with the door open, which is a serious safety hazard and requires immediate repair.

What causes a dryer door switch to fail?

Common causes for door switch failure include normal wear and tear from repeated opening and closing of the door, electrical issues such as power surges, or physical damage to the switch mechanism itself. Over time, the internal contacts can also degrade or become stuck.

Dryer Door Switch Replacement: Symptoms & Installation

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What the 3406107 does

The dryer door switch is a safety mechanism that detects whether the dryer door is closed. It prevents the dryer from operating when the door is open, ensuring user safety.

Symptoms when this part fails

Dryer does not start when door is closed
Dryer stops running mid-cycle
Drum light does not turn on or off with door
Dryer runs with the door open (safety concern)

Compatibility

Fits the Kenmore family. Specifically:

Any unit originally equipped with OEM part number(s): 3406101, 3406109, PS11741701, AP6008561, WP3406107, 3405100, 3405101, 3406100.
Check the model/rating plate inside your appliance and compare it against the fitment table on the product listing before ordering — this guide does not list specific compatible models because Amazon does not provide verified fitment data through this pipeline.

Also replaces: 3406101, 3406109, PS11741701, AP6008561, WP3406107, 3405100, 3405101, 3406100

Tools you'll need

Phillips screwdriver
Flathead screwdriver
Nut driver
Pliers
Multimeter

Difficulty: Easy · Time: 15-30 minutes

How to install the 3406107, step by step

Disconnect power to the dryer at the wall outlet or circuit breaker.
Open the dryer door and locate the door switch.
Remove screws securing the top or front panel to access the switch.
Carefully detach the old door switch from its mounting bracket.
Disconnect the electrical wires connected to the old switch.
Connect the wires to the terminals on the new door switch.
Mount the new switch securely and reassemble the dryer panels.
Restore power to the dryer and test its operation.