How to Fix a Dryer That Won't Start

Quick answer

First, confirm the dryer is plugged in and the circuit breaker hasn't tripped. Check the lint trap and vent for blockages. If the thermal fuse is blown, replace it. If the dryer still won't start, the start switch or motor might need replacement.

Confirm the symptom

• Dryer doesn't turn on when you press the start button
• No power indicator lights or sounds when you turn it on
• Dryer is plugged in but doesn't respond
• Breaker tripped for the dryer circuit
• Timer knob doesn't move or feel stiff

Tools and prep

• Screwdrivers (flathead and Phillips)
• Multimeter for testing electrical components
• Work gloves and safety glasses
• Lint brush or vacuum
• Dryer vent cleaning brush
• Replacement thermal fuse or start switch (if needed)
• Turn off power at the circuit breaker before starting

Step-by-step troubleshooting

1. Check Power Supply
   Do: Ensure the dryer is plugged in securely and the outlet works. Check the circuit breaker for tripped switches.
   Observe: Outlet powers other devices, breaker is in 'on' position.
   Means: Power supply is functional.
   Next: If power is confirmed, proceed to step 2.
2. Inspect Lint Trap and Vent
   Do: Clean the lint trap and use a vacuum or brush to clear the vent hose and external vent.
   Observe: No lint blockage in trap or vent.
   Means: Blockage is not the issue.
   Next: If vent is clear, move to step 3.
3. Test Thermal Fuse
   Do: Unplug the dryer. Locate the thermal fuse (usually on the exhaust duct). Use a multimeter to test for continuity.
   Observe: Multimeter shows no continuity.
   Means: Thermal fuse is blown and needs replacement.
   Next: Replace the thermal fuse and test the dryer.
4. Check Start Switch
   Do: Unplug the dryer. Remove the control panel and test the start switch with a multimeter for continuity.
   Observe: No continuity when the switch is pressed.
   Means: Start switch is faulty.
   Next: Replace the start switch.
5. Examine Motor and Drive Belt
   Do: Unplug the dryer. Remove the back panel and inspect the motor and drive belt for damage or looseness.
   Observe: Motor spins freely, belt is intact and properly tensioned.
   Means: Motor and belt are functional.
   Next: If motor or belt is damaged, replace them.
6. Test Timer and Door Switch
   Do: Unplug the dryer. Test the timer and door switch with a multimeter for continuity.
   Observe: No continuity in either component.
   Means: Timer or door switch is faulty.
   Next: Replace the faulty component.

Common causes

Parts matching

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

• Thermal fuse – Replace if blown due to overheating
• Start switch – Replace if faulty or worn out
• Timer or door switch – Replace if not providing continuity
• Drive belt – Replace if broken or loose
• Motor – Replace if damaged or not spinning

Purchase parts specific to your dryer model for compatibility.

When to call a professional

• If the dryer still doesn't start after replacing all common parts
• If you're unsure about handling electrical components
• If the motor is damaged and needs replacement
• If the dryer vent system is complex and hard to clean
• If the dryer is under warranty and DIY repairs may void it

FAQ

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