Dryer Not Stopping (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

If your dryer won't stop, first unplug it. Check the timer knob for damage or looseness. If it's fine, test the thermal fuse and control board. Replace faulty parts to restore normal operation.

Confirm the symptom

Dryer runs continuously past the set time
Timer knob doesn't stop the cycle
Dryer won't shut off manually
Cycle restarts after completion

Tools and prep

Multimeter
Screwdrivers (flathead and Phillips)
Owner's manual
Replacement parts (timer, thermal fuse, control board)
Work gloves
Safety goggles
Plug out the dryer from the wall socket

Step-by-step troubleshooting

Check Timer Knob
Do: Inspect the timer knob for cracks, looseness, or misalignment.
Observe: If the knob is damaged or loose, it may not send stop signals.
Means: The timer knob is likely faulty.
Next: Replace the timer knob.
Test Timer Switch
Do: Use a multimeter to test the timer switch for continuity.
Observe: No continuity means the switch is broken.
Means: The timer switch needs replacement.
Next: Replace the timer switch.
Inspect Thermal Fuse
Do: Locate the thermal fuse (usually near the dryer drum) and test it with a multimeter.
Observe: If the fuse has no continuity, it's blown.
Means: The thermal fuse is faulty and must be replaced.
Next: Replace the thermal fuse.
Check Control Board
Do: Inspect the control board for visible damage or burnt components.
Observe: Burnt smells or charred areas indicate a failed board.
Means: The control board is likely the issue.
Next: Replace the control board.
Test Start Switch
Do: Use a multimeter to test the start switch for continuity.
Observe: If there's no continuity when pressed, the switch is faulty.
Means: The start switch is defective.
Next: Replace the start switch.
Verify Dryer Door Switch
Do: Check the door switch for proper engagement when the door is closed.
Observe: If the switch doesn't close properly, the dryer may not stop.
Means: The door switch is malfunctioning.
Next: Replace the door switch.

Common causes

Cause	Likelihood	Difficulty	Part often needed
Faulty Timer Knob The knob fails to send stop signals to the dryer's system.	Common	Easy	Timer knob
Defective Timer Switch The internal switch inside the timer doesn't break the circuit.	Common	Easy–Medium	Timer switch
Blown Thermal Fuse A blown fuse can prevent the dryer from stopping to protect against overheating.	Sometimes	Easy	Thermal fuse
Failed Control Board A malfunctioning board can't properly manage the dryer's cycles.	Sometimes	Medium	Control board
Defective Start Switch The switch fails to disengage after the cycle ends.	Rare	Easy–Medium	Start switch
Malfunctioning Door Switch The switch doesn't properly signal the dryer to stop when the door is closed.	Rare	Easy	Door switch

Parts matching

Common parts needed for a dryer not stopping include:

Timer knob
Timer switch
Thermal fuse
Control board
Start switch
Door switch

Always match replacement parts to your dryer's model number for compatibility.

When to call a professional

If you're unsure about electrical testing
If the dryer still doesn't stop after replacing parts
If you smell burning or see smoke
If the dryer is under warranty and DIY repairs may void it
If you lack the tools or confidence to complete the repair

FAQ

Can a faulty thermal fuse cause the dryer to run continuously?

Yes, a blown thermal fuse can prevent the dryer from stopping to protect against overheating. Test and replace it if necessary.

How do I test the timer switch with a multimeter?

Set the multimeter to continuity mode. Touch the probes to the timer switch terminals. If there's no continuity, the switch is faulty and needs replacement.

Is it safe to replace the control board myself?

Yes, if you follow the owner's manual and take proper safety precautions. However, if you're uncomfortable working with electrical components, call a professional.

Why won't my dryer stop even after replacing the timer knob?

Another component, such as the timer switch or control board, may be faulty. Test these parts next.