Troubleshooting a Dryer That Won't Start (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

First, ensure the dryer is plugged in and the circuit breaker hasn't tripped. Check the lint trap and vent for blockages, then test the thermal fuse. If these don't resolve the issue, the start switch or motor might need replacement.

Confirm the symptom

Dryer doesn't turn on at all
No power to the dryer outlet
Dryer makes no noise when started

Tools and prep

Screwdrivers (flathead and Phillips)
Multimeter for testing electrical components
Work gloves for safety
Lint brush or vacuum for cleaning
Owner's manual for reference
Turn off power at the circuit breaker before starting

Step-by-step troubleshooting

Check Power Source
Do: Verify the dryer is plugged in and the outlet is working.
Observe: Outlet has power and dryer is properly connected.
Means: Power issue resolved if outlet works.
Next: If no power, check the circuit breaker.
Inspect Lint Trap and Vent
Do: Clean the lint trap and use a vacuum to clear the vent duct.
Observe: No lint blockage in trap or vent.
Means: Blocked vent may prevent the dryer from starting.
Next: If vent is clear, move to the next step.
Test Thermal Fuse
Do: Unplug the dryer and locate the thermal fuse. Use a multimeter to test for continuity.
Observe: Multimeter shows no continuity if the fuse is blown.
Means: Blown thermal fuse is a common cause of a non-starting dryer.
Next: Replace the thermal fuse if it's faulty.
Check Start Switch
Do: Test the start switch with a multimeter for continuity.
Observe: No continuity indicates a faulty switch.
Means: A bad start switch prevents the dryer from starting.
Next: Replace the start switch if necessary.
Test Motor
Do: Unplug the dryer and test the motor with a multimeter.
Observe: Multimeter shows no continuity if the motor is faulty.
Means: A failed motor won't start the dryer.
Next: Replace the motor if it's not working.
Inspect Door Switch
Do: Check if the door switch is properly engaged and test for continuity.
Observe: Switch not closing or no continuity detected.
Means: A faulty door switch can prevent the dryer from starting.
Next: Replace the door switch if it's defective.

Common causes

Cause	Likelihood	Difficulty	Part often needed
Blown Thermal Fuse Overheating due to a clogged vent or lint buildup can blow the thermal fuse.	Common	Easy	Thermal fuse
Faulty Start Switch Wear and tear can cause the start switch to fail, preventing the dryer from starting.	Sometimes	Easy–Medium	Start switch
Tripped Circuit Breaker The dryer's circuit breaker may trip due to an overload or electrical issue.	Common	Easy	None
Clogged Lint Trap or Vent Blocked airflow from lint buildup can trigger safety mechanisms to stop the dryer.	Common	Easy	None
Failed Motor A worn-out or burned-out motor won't start the dryer.	Sometimes	Hard	Motor
Faulty Door Switch If the door switch isn't closing properly, the dryer won't start.	Sometimes	Easy–Medium	Door switch

Parts matching

Replace these parts if they're faulty:

Thermal fuse: $10–$20
Start switch: $15–$30
Door switch: $10–$25
Motor: $100–$200

Purchase OEM parts for compatibility and reliability.

When to call a professional

If the dryer still doesn't start after replacing all common parts
If you're uncomfortable working with electrical components
If the dryer is under warranty and you don't want to risk voiding it
If the problem involves complex electrical or mechanical repairs

FAQ

Why won't my dryer start even though it's plugged in?

Check the circuit breaker to ensure it hasn't tripped. Also, test the outlet with another appliance to confirm it's working.

Can a clogged lint trap prevent the dryer from starting?

Yes, a clogged lint trap or vent can overheat the dryer and trigger the thermal fuse to blow, stopping the dryer from starting.

How do I test the thermal fuse?

Unplug the dryer, locate the thermal fuse, and use a multimeter to test for continuity. If there's no continuity, the fuse is blown and needs replacement.

What should I do if the dryer starts but doesn't heat?

Check the heating element and thermostat. If they're faulty, replace them. If unsure, consult a professional technician.