When Dryer 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

Check the power supply, ensure the door is closed properly, and verify the start button is pressed. If the dryer still won't start, unplug it for 1 minute and try again.

Confirm the symptom

Dryer doesn't turn on at all
No power indicator lights or sounds
Start button does nothing

Tools and prep

Screwdriver set
Multimeter
Dryer vent cleaning brush
Work gloves
Unplug the dryer before working on it

Step-by-step troubleshooting

Check Power Supply
Do: Verify the dryer is plugged in and the circuit breaker hasn't tripped.
Observe: Dryer has power and the outlet is working.
Means: The issue is not with the power supply.
Next: Check the door switch
Check the Door Switch
Do: Close the dryer door and listen for a click or use a multimeter to test continuity.
Observe: The door switch clicks or shows continuity.
Means: The door switch is working properly.
Next: Test the start button
Test the Start Button
Do: Press and hold the start button to see if it engages.
Observe: The start button clicks or the dryer begins to run.
Means: The start button is functional.
Next: Inspect the thermal fuse
Inspect the Thermal Fuse
Do: Locate the thermal fuse (usually on the exhaust duct) and test it with a multimeter.
Observe: The thermal fuse shows continuity.
Means: The thermal fuse is intact and not the cause.
Next: Check the motor
Check the Motor
Do: Listen for any humming or buzzing sounds when attempting to start the dryer.
Observe: The motor makes noise but doesn't turn.
Means: The motor may be faulty.
Next: Consult a professional
Clean the Dryer Vent
Do: Use a dryer vent cleaning brush to remove lint and debris from the vent.
Observe: The vent is clear and airflow is improved.
Means: Clogged vents may have been preventing the dryer from starting.
Next: Test the dryer

Common causes

Cause	Likelihood	Difficulty	Part often needed
Tripped Circuit Breaker The dryer's circuit breaker may have tripped due to an overload.	Common	Easy	None
Faulty Door Switch A broken door switch prevents the dryer from starting when the door is closed.	Common	Easy–Medium	Door switch
Blown Thermal Fuse A thermal fuse can blow if the dryer overheats, cutting off power to the motor.	Common	Medium	Thermal fuse
Clogged Dryer Vent Excessive lint buildup in the vent can cause overheating and prevent the dryer from starting.	Common	Easy	None
Faulty Start Button A worn or damaged start button may not send the signal to start the dryer.	Sometimes	Medium	Start button
Failed Motor A worn-out or burned-out motor will prevent the dryer from starting.	Sometimes	Hard	Dryer motor
Faulty Timer or Control Board A malfunctioning timer or control board can prevent the dryer from receiving power.	Rare	Hard	Timer or control board

Parts matching

Common parts needed for a dryer that won't start include:

Door switch
Thermal fuse
Start button
Dryer motor
Timer or control board

Purchase replacement parts specific to your dryer model for compatibility.

When to call a professional

The dryer still won't start after checking all basic issues
You hear a burning smell or notice electrical sparks
You're not comfortable working with electrical components
The problem involves replacing the motor or control board

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 dryer vent prevent the dryer from starting?

Yes, a clogged vent can cause overheating, which may trigger the thermal fuse to blow and stop the dryer from starting.

How do I test the thermal fuse on my dryer?

Use a multimeter to test for continuity. If there's no continuity, the thermal fuse is blown and needs to be replaced.

Is it safe to replace a dryer motor myself?

Replacing a dryer motor can be complex and involves working with electrical components. If you're not experienced, it's best to call a professional.

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

Check the heating element and thermostat. If they're faulty, they may need to be replaced.