Dryer Won't Turn Off Unless Door Is Open (Troubleshooting Guide)

On this page

Quick answer
Confirm the symptom
Tools and prep
Step-by-step troubleshooting
Common causes table
Parts matching
When to call a pro
FAQ
Related guides

Quick answer

Your dryer likely has a faulty door switch or timer. Turn off the power, check the door switch for damage, and test the timer. Replace if necessary.

Confirm the symptom

Dryer stops only when door is open
Door switch doesn't reset properly
Dryer runs continuously unless door is manually opened

Tools and prep

Screwdrivers (flathead and Phillips)
Multimeter for testing continuity
Work light or flashlight
Owner's manual for reference
Safety gloves and goggles
Replacement parts if needed

Step-by-step troubleshooting

Turn Off Power
Do: Unplug the dryer or turn off the circuit breaker.
Observe: Dryer is completely powered down.
Means: Ensures safety during inspection.
Next: Inspect door switch
Inspect Door Switch
Do: Locate the door switch (usually near the door hinge) and check for visible damage or wear.
Observe: Switch may be cracked, burned, or have loose connections.
Means: A faulty door switch can prevent the dryer from turning off.
Next: Test door switch with multimeter
Test Door Switch
Do: Use a multimeter to test the door switch for continuity when the door is closed and open.
Observe: No continuity when door is closed indicates a bad switch.
Means: The switch is not sending the correct signal to the dryer.
Next: Replace door switch if faulty
Check Timer or Control Board
Do: Inspect the timer or electronic control board for signs of damage or burn marks.
Observe: Burned components or loose wires may be present.
Means: A malfunctioning timer or control board can cause improper operation.
Next: Test timer or control board
Test Timer or Control Board
Do: Use a multimeter to test the timer or control board for proper voltage and continuity.
Observe: Irregular readings or no power may indicate a faulty component.
Means: The timer or control board is not functioning correctly.
Next: Replace timer or control board if necessary
Reassemble and Test
Do: Reconnect all wires, reassemble the dryer, and plug it back in.
Observe: Dryer should now turn off normally without opening the door.
Means: Issue is resolved with the replacement or repair.
Next: Monitor dryer operation

Common causes

Cause	Likelihood	Difficulty	Part often needed
Faulty Door Switch The door switch fails to signal the dryer to stop when the door is closed.	Common	Easy–Medium	Door switch
Malfunctioning Timer A worn or damaged timer may not send the correct signals to shut off the dryer.	Sometimes	Medium	Timer
Defective Control Board An electronic control board with damaged circuits can disrupt normal operation.	Sometimes	Hard	Control board
Loose or Damaged Wires Wires connected to the door switch or timer may be loose, frayed, or disconnected.	Sometimes	Easy–Medium	Wire connectors or replacement wires
Overloaded Dryer Excessive lint or overloading can strain components, causing erratic behavior.	Rare	Easy	None
Faulty Thermostat A malfunctioning thermostat may not regulate temperature, affecting dryer operation.	Rare	Medium	Thermostat

Parts matching

Common parts needed for this repair include:

Door switch (model-specific)
Timer assembly
Electronic control board
Wire connectors or replacement wires

Always match part numbers from your dryer's manual to ensure compatibility.

When to call a professional

You're uncomfortable working with electrical components
You cannot locate or access the door switch or timer
Testing shows multiple faulty components
The dryer still doesn't work after replacing parts
There are signs of extensive electrical damage or fire risk

FAQ

Can I bypass the door switch temporarily?

No, bypassing the door switch is unsafe and can lead to fire hazards. Always replace faulty components.

How do I know if the timer is bad?

Test the timer with a multimeter for continuity. If it doesn't show proper readings, it likely needs replacement.

Is it worth repairing an old dryer?

If the repair cost is less than 50% of a new dryer's price, it's usually worth fixing. Otherwise, consider replacement.

Why does my dryer stop only when I open the door?

This typically means the door switch isn't signaling the dryer to stop, so it defaults to stopping when the door opens.