Quick answer
If your dryer has power but won't start, first check the door switch, power cord, and thermal fuse. If these are fine, the motor or control board may need a technician.
Confirm the symptom
- Dryer has power (lights, display working)
- Dryer does not start when you press Start
- No unusual sounds or smells when trying to start
- Power cord is plugged in and outlet works
Tools and prep
- Multimeter (for testing electrical components)
- Screwdrivers (flathead and Phillips)
- Owner's manual for reference
- Safety gloves and goggles
- Dryer unplugged from power source
Step-by-step troubleshooting
- Check the Door SwitchDo: Locate the door switch near the dryer door opening and test it with a multimeter.Observe: If the switch is broken or not closing properly, it will prevent the dryer from starting.Means: The door switch is faulty and needs replacement.Next: Replace the door switch.
- Inspect the Power CordDo: Examine the power cord for visible damage and test the cord with a multimeter.Observe: A damaged or faulty power cord will not transmit electricity properly.Means: The power cord is damaged and needs replacement.Next: Replace the power cord.
- Test the Thermal FuseDo: Locate the thermal fuse (usually on the exhaust duct) and test it with a multimeter.Observe: If the thermal fuse is blown, it will not conduct electricity.Means: The thermal fuse is blown and needs replacement.Next: Replace the thermal fuse.
- Check the MotorDo: Test the dryer motor with a multimeter for continuity.Observe: If the motor does not have continuity, it is not receiving power.Means: The motor is faulty and needs replacement.Next: Replace the motor or call a professional.
- Inspect the Control BoardDo: Check the control board for visible damage or burn marks and test it with a multimeter.Observe: If the control board is damaged or not functioning, it will not send power to the motor.Means: The control board is faulty and needs replacement.Next: Replace the control board or call a professional.
- Check the Start SwitchDo: Test the start switch with a multimeter to ensure it is functioning properly.Observe: If the start switch is faulty, it will not send power to the motor.Means: The start switch is faulty and needs replacement.Next: Replace the start switch.
Common causes
| Cause | Likelihood | Difficulty | Part often needed |
|---|---|---|---|
| Faulty Door Switch The door switch ensures the door is closed before starting. If it's broken, the dryer won't start. | Common | Easy | Door Switch |
| Damaged Power Cord A damaged power cord can prevent electricity from reaching the dryer's components. | Common | Easy | Power Cord |
| Blown Thermal Fuse The thermal fuse is a safety device that blows if the dryer overheats, cutting off power to prevent fires. | Common | Easy | Thermal Fuse |
| Faulty Motor The motor may be damaged or burned out, preventing the dryer from starting. | Sometimes | Medium | Dryer Motor |
| Faulty Control Board The control board sends power to the motor and other components. If it's damaged, the dryer won't start. | Sometimes | Hard | Control Board |
| Faulty Start Switch The start switch initiates the dryer's operation. If it's faulty, the dryer won't start. | Sometimes | Easy | Start Switch |
Parts matching
Common parts needed for a dryer that won't start but has power include:
- Door Switch
- Power Cord
- Thermal Fuse
- Dryer Motor
- Control Board
- Start Switch
Always refer to your dryer's model number when ordering replacement parts to ensure compatibility.
When to call a professional
- If the dryer still won't start after replacing all common parts (door switch, power cord, thermal fuse, start switch).
- If you're not comfortable using a multimeter or working with electrical components.
- If the issue involves the motor or control board, which may require specialized tools or knowledge.
- If the dryer is under warranty and you don't want to risk voiding it by DIY repairs.
FAQ
Why does my dryer have power but won't start?
This can be caused by a faulty door switch, damaged power cord, blown thermal fuse, or issues with the motor or control board.
Can I test the thermal fuse myself?
Yes, you can test the thermal fuse with a multimeter. If it's blown, it will need to be replaced.
How do I know if the dryer motor is bad?
If the motor doesn't have continuity when tested with a multimeter, it is likely faulty and needs replacement.
Is it worth repairing an old dryer that won't start?
It depends on the cost of the repair versus the value of the dryer. If the repair is expensive, it may be more cost-effective to replace the dryer.