Troubleshooting guide
Dryer Won't Start? 7 Causes and What to Check
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Quick answer
When a dryer won't start, check power first: the plug and the breaker. Then make sure the door is fully latched and the control lock is off. If those are fine, a blown thermal fuse, a broken belt with a belt switch, or a failed door switch is the most common cause.
A dryer that won't start is usually not a big repair. It's often a safety device doing its job, like a door switch or a thermal fuse, or a simple power problem.
Pay attention to what happens when you press Start. Total silence, a click, a hum and a display that lights but does nothing each point to different parts.
Causes, from most to least likely
1.No power to the dryer
Dryer plugs can work loose when the dryer is moved. Electric dryers use a double-pole breaker, and gas dryers use a regular 120V outlet that may be on a GFCI.
- Check it yourself
- Make sure the plug is fully seated. Turn the dryer breaker off, then back on. For a gas dryer, check for a tripped GFCI nearby.
- The fix
- Resetting the breaker or plug often fixes it. A breaker that keeps tripping needs an electrician.
2.Door not latched or failed door switch
The door switch tells the dryer the door is closed. If the latch is worn or the switch fails, the dryer won't start. On many models the drum light also runs through this switch, so a light that won't turn off when the door closes is a clue.
- Check it yourself
- Close the door firmly. Listen for the switch click when you press the small lever inside the door frame. A missing click suggests a broken switch.
- The fix
- The door switch or latch is replaced. It's a quick repair.
3.Control lock or start button not held
Many electronic dryers have a control lock or child lock. Some need the Start button held for a second or two. These are easy to miss, especially in shared or rental laundry rooms.
- Check it yourself
- Look for a lock icon on the display and turn it off as shown in your manual. Press and hold Start for a few seconds.
- The fix
- No part needed.
4.Blown thermal fuse
On most Whirlpool, Maytag and Kenmore dryers built by Whirlpool, the thermal fuse is near the blower and cuts power to the motor when it blows, so the dryer won't start at all. It blows when the dryer overheats, usually from a clogged vent.
- Check it yourself
- Check airflow at the outside vent hood. If it's weak, the vent needs cleaning before the fuse is replaced.
- The fix · typical $130 – $220
- The fuse is replaced, and the vent is checked so the new one doesn't blow too.
5.Broken belt with a belt switch
Some dryers have a switch on the idler arm that stops the motor if the belt breaks. The dryer may hum briefly, click, or do nothing at all.
- Check it yourself
- Unplug the dryer and turn the drum by hand. If it spins freely with almost no resistance, the belt is likely broken.
- The fix · typical $140 – $230
- The belt is replaced, and the idler pulley and rollers are checked while the dryer is open.
6.Start switch, timer or control board
The start switch can wear out, and older dryers rely on a mechanical timer. Electronic dryers use a control board that can fail from heat or power surges.
- Check it yourself
- Note whether the display lights and whether you hear a click when pressing Start. That helps us narrow it down.
- The fix · typical $250 – $480
- We test the switch and control before quoting.
7.Failed drive motor
If the dryer hums but won't turn, the motor's start winding or centrifugal switch may have failed. A seized blower or drum can cause a similar hum.
- Check it yourself
- Stop pressing Start if it hums. Unplug the dryer and try turning the drum by hand. If it turns normally, the motor is a likely suspect.
- The fix · typical $280 – $460
- The motor is replaced after the belt, pulley and blower are ruled out.
When to call a technician
Call us if the dryer has power, the door latches and the controls aren't locked but it still won't start, or if it hums without turning. We fix dryers throughout Clearwater, Dunedin, Largo and north Pinellas. Most no-start repairs are small parts we try to carry, and the $79 visit counts toward the repair price.
45-day parts & labor warranty
Every repair carries a 45-day warranty on the parts we install and on our labor.
What the warranty covers →Common questions
Why won't my dryer start but has power?
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The door switch, control lock, thermal fuse or a broken belt are the common causes. A light that comes on tells you the dryer has power, so the problem is after the plug.
Where is the thermal fuse on a dryer?
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On many Whirlpool-built dryers it's on the blower housing at the back. On others it's near the heater. Unplug the dryer before removing the back panel.
How do I reset my dryer?
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Unplug it or turn off the breaker for a minute, then restore power. Some electronic models also have a reset sequence in the manual. Note that a blown thermal fuse can't be reset; it has to be replaced.
My dryer hums but won't start. What should I do?
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Stop pressing Start. Unplug it and turn the drum by hand. A drum that turns too easily suggests a broken belt. One that won't turn suggests something is jammed. If it turns normally, the motor may have failed.
Is it worth fixing a dryer that won't start?
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In most cases, yes. Door switches, fuses and belts are inexpensive repairs. Even a motor is usually worth replacing on a dryer in otherwise good shape.
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Last reviewed 2026-10-07 by Mako Appliance Repair, Clearwater FL.
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