Dryer Won't Turn On — How to Fix It
When a dryer is completely dead — no lights, no hum when you press start — the problem is power or a safety switch. Work through these from easiest to hardest.
1. Check Power (Both Breaker Halves)
Electric dryers use a 240V double breaker. If the dryer is totally dead, both halves may be off, or the plug isn't fully seated. Reset both halves of the breaker firmly, and confirm the outlet has power. Gas dryers use a standard 120V plug — check that outlet and breaker.
2. Check the Door Switch
The dryer won't start unless the door switch senses the door closed. Press the door firmly shut and listen for the click. A failed door switch is a very common dead-dryer cause and an inexpensive part.
3. Thermal Fuse
A blown thermal fuse (usually from a clogged vent overheating the dryer) cuts power to the motor on many models, making the dryer completely dead. It is a one-time safety device that must be replaced, not reset — a cheap, common DIY fix. Clear the vent too, or it will blow again.
4. Start Switch
If there is power, the door switch is good, and the thermal fuse is intact but pressing Start does nothing (no hum), the start switch/button itself may have failed. It is a moderate DIY repair.
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FAQ
Usually a power problem (check both halves of the 240V breaker and the outlet), a failed door switch, or a blown thermal fuse. Those three account for most completely dead dryers.
Yes — on many dryers the thermal fuse is in the motor circuit, so when it blows the dryer won't start at all. Replace it and clear the vent restriction that caused it.
Always unplug an appliance and shut off its water supply before servicing. This guide is informational and not a substitute for a qualified technician.