On this page
Quick answer
First, check if the dryer is getting power and the lint trap is clean. If the thermal fuse is blown, it will need replacement. Unplug the dryer before inspecting internal components.
Confirm the symptom
- Dryer doesn't turn on at all
- No power indicator lights or sounds
- No motor noise when starting
Tools and prep
- Screwdrivers (flathead and Phillips)
- Multimeter for testing electrical components
- Work gloves for safety
- Owner's manual for reference
- Plug in the dryer to a working outlet after repairs
Step-by-step troubleshooting
- Check Power SourceDo: Verify the dryer is plugged in and the circuit breaker hasn't tripped.Observe: Power cord is connected and breaker is on.Means: Power issue resolved.Next: If power is confirmed, move to the next step.
- Inspect Lint Trap and VentDo: Clean the lint trap and check the vent for blockages.Observe: Lint trap is empty and vent is clear.Means: Obstruction preventing airflow is removed.Next: If lint trap and vent are clear, proceed to the next step.
- Test the Thermal FuseDo: Unplug the dryer and locate the thermal fuse (usually near the exhaust duct). Use a multimeter to test for continuity.Observe: Multimeter shows no continuity if the fuse is blown.Means: Blown thermal fuse is the issue.Next: Replace the thermal fuse if it's blown.
- Check the Door SwitchDo: Open the dryer door and use the multimeter to test the door switch for continuity.Observe: Multimeter shows no continuity if the door switch is faulty.Means: Faulty door switch prevents the dryer from starting.Next: Replace the door switch if it's faulty.
- Examine the Start SwitchDo: Test the start switch with a multimeter to ensure it's functioning properly.Observe: Multimeter shows no continuity if the start switch is defective.Means: Defective start switch is the issue.Next: Replace the start switch if it's defective.
- Inspect the Motor and CapacitorDo: Check the motor and capacitor for visible damage or wear. Test the capacitor with a multimeter.Observe: Motor is damaged or capacitor shows no charge.Means: Faulty motor or capacitor needs replacement.Next: Replace the motor or capacitor as needed.
Common causes
| Cause | Likelihood | Difficulty | Part often needed |
|---|---|---|---|
| Power Supply Issue Dryer not receiving electricity due to tripped breaker or faulty outlet. | Common | Easy | None |
| Clogged Lint Trap or Vent Obstruction in the lint trap or vent can prevent the dryer from starting as a safety measure. | Common | Easy | None |
| Blown Thermal Fuse Overheating can cause the thermal fuse to blow, cutting off power to the dryer. | Common | Easy–Medium | Thermal fuse |
| Faulty Door Switch A defective door switch won't allow the dryer to start if the door is open or not properly latched. | Sometimes | Easy–Medium | Door switch |
| Defective Start Switch A malfunctioning start switch prevents the dryer from initiating the drying cycle. | Sometimes | Medium | Start switch |
| Faulty Motor or Capacitor A damaged motor or capacitor can prevent the dryer from starting. | Rare | Hard | Motor or capacitor |
Parts matching
Common parts needed for a dryer that won't start:
- Thermal fuse
- Door switch
- Start switch
- Motor
- Capacitor
Purchase replacement parts that match your dryer's make and model for compatibility.
When to call a professional
- If you're not comfortable working with electrical components
- If the dryer still doesn't start after replacing all common parts
- If there's visible damage to the wiring or internal components
- If the dryer is under warranty and you don't want to risk voiding it
FAQ
How do I know if the thermal fuse is blown?
Use a multimeter to test for continuity. If there's no continuity, the fuse is blown and needs replacement.
Can a clogged lint trap really prevent the dryer from starting?
Yes, many dryers have a safety feature that stops the dryer if the lint trap or vent is clogged to prevent overheating.
Why is my dryer making noise but not starting?
A noisy dryer that doesn't start could indicate a faulty motor or capacitor. Test these components with a multimeter.
Is it safe to replace the thermal fuse myself?
Yes, as long as you unplug the dryer and follow safety precautions. However, if you're unsure, consult a professional.