A dryer that does nothing when you press Start may have lost power, failed to detect a closed door, or entered a control-lock or delay mode. Some causes are simple; others involve high-voltage electrical parts or gas controls that should be handled only by a qualified professional.
Safety first: Unplug an electric dryer before inspecting anything beyond the external controls and vent. Gas-dryer owners should also close the gas shutoff valve if moving the appliance. Never remove panels, bypass a door switch or thermal fuse, test live 240-volt circuits, or continue if you smell gas. If gas odor is present, do not operate switches; leave the area and contact the gas utility or emergency service from a safe location.
Why a Clothes Dryer Will Not Start
1. The door is not fully latched
Clothing caught at the opening or a damaged latch can prevent the door switch from closing. Reopen the door, clear the seal area, and close it firmly.
2. Control Lock or Delay Start is active
A lock icon, countdown, or indicator may show that the controls are disabled or the cycle is delayed. Use the exact button sequence in the owner’s manual.
3. Start was not held long enough
Some electronic dryers require the Start button to be held for several seconds. Select a timed cycle and follow the panel instructions once.
4. The household breaker has tripped
Electric dryers commonly use a double-pole 240-volt breaker. One side can trip, sometimes leaving the display lit while the motor or heater cannot operate.
5. The outlet, cord, or plug is damaged
Discoloration, melting, looseness, or a burning smell indicates an electrical hazard. Do not reuse the outlet or cord until a licensed electrician or qualified technician evaluates it.
6. The dryer is overheated
A blocked lint path or crushed exhaust duct can make a safety device open. Let the dryer cool, clean the lint screen, and inspect the accessible vent path. A one-time thermal fuse must never be bypassed.
7. The door switch has failed
If the drum light behaves abnormally or the latch feels loose, the switch may not report that the door is closed. Replacement requires model-specific access and safe testing.
8. The belt switch or drive motor has a problem
Some dryers will not run if the belt breaks. A seized drum, failed motor, or motor overload can also prevent starting.
9. The control board or start switch has failed
If power and interlocks are normal but the dryer remains unresponsive, the control system may need professional diagnosis.
Dryer Has Power but Won’t Start
If the lights or display come on but the dryer will not start, the issue is different from a completely dead appliance. Check the selected cycle, Control Lock or Delay Start, the door latch, and whether the manual requires holding Start. A dryer that begins and then stops has a different symptom than one that never responds to Start.
Dryer Clicks but Won’t Start
A single click can mean the controls are attempting to begin a cycle, but it does not identify a failed part by itself. With the dryer unplugged, you can safely check for trapped clothing, a properly latched door, and a drum that turns normally by hand. Do not open panels or bypass a safety switch.
Dryer Hums but Won’t Start
A persistent hum without drum movement can point to a condition that needs service, but it is not a diagnosis on its own. Stop the cycle, unplug the dryer, and check only the accessible door area, lint screen, plug, and exhaust path. Do not keep retrying Start if the hum is loud, the drum scrapes, or an electrical smell is present.
Dryer Stopped and Now Won’t Start
If the dryer stopped during a cycle and will not restart, let it cool and check the lint screen, visible exhaust duct, door closure, and breaker once. This differs from a dryer that never started at all and may indicate overheating, a power interruption, or a control that needs model-specific diagnosis.
Step-by-Step Checks
- Read the panel. Record any code, unlock the controls, cancel Delay Start, and choose a basic Timed Dry cycle.
- Check the door. Remove trapped clothing and listen for a positive latch. Do not hold the switch closed by hand.
- Hold Start as directed. Some models need a two- to five-second press.
- Check the breaker. Turn the dryer off. Reset a tripped double-pole breaker once by moving it fully Off and then On. If it trips again, stop and call an electrician or technician.
- Inspect the plug and cord without touching damaged areas. Unplug only if the plug and outlet look normal and are cool.
- Clean the lint screen. Remove lint every load and wash residue from the screen if airflow seems restricted.
- Inspect the exhaust duct. Look behind the dryer for crushing or a sharp bend. Use rigid or semi-rigid metal ducting permitted by local code, not plastic or foil accordion duct.
- Try the drum by hand only while unplugged. It should turn with steady resistance. A jammed or scraping drum needs service.
When to Stop DIY and Call for Service
Call a licensed electrician for a hot, loose, discolored, or damaged outlet; repeated breaker trips; or uncertain 240-volt supply. Call an appliance technician if the door switch, thermal fuse, belt switch, motor, start switch, or electronic control needs testing. Gas odors, soot, or burner problems require immediate shutdown and qualified gas-appliance service.
Related Dryer Guides
If the drum runs but clothes stay wet, see Dryer Not Heating?. If loads dry slowly, use Dryer Taking Too Long to Dry?. A running dryer that squeals or chirps is covered in our dryer squeaking guide.
Frequently Asked Questions
Why does the dryer have lights but will not start?
Control Lock, a door switch, one tripped side of a double-pole breaker, or an internal safety device can leave the panel lit while preventing the motor from running.
Can I bypass the thermal fuse to test the dryer?
No. The thermal fuse is a fire-safety device. Bypassing it can create a serious hazard and does not correct the airflow or overheating condition that caused it to open.
Why does the dryer click once but not run?
A click may mean the control is attempting to start the motor. A jammed drum, failed motor, relay, belt switch, or power problem may still prevent operation.
Should I reset the breaker more than once?
No. A breaker that trips again is signaling an electrical fault or overload. Leave it off and arrange qualified diagnosis.
Why won’t my dryer start?
Check the visible power connection, breaker, controls, and door closure first. If those checks are normal, an internal safety or drive-related problem may need professional diagnosis.
Why does my dryer have power but not start?
A lit display does not confirm every required circuit or control condition is working. Check the door, settings, Control Lock, and the model’s Start-button instructions before arranging service.
Why does my dryer hum but not start?
A hum can occur when the dryer attempts to run but cannot begin normally. Do not repeatedly try to start it; unplug it and arrange service if the sound persists or is accompanied by heat, odor, or scraping.
Why did my dryer stop and now won’t start?
Check for a tripped breaker, an overheating warning sign, restricted accessible airflow, and a fully closed door. Persistent failure after these checks needs service.
Can the door switch prevent a dryer from starting?
Yes. A dryer normally needs to detect a fully closed door before it will run. Remove trapped clothing and close the door firmly, but do not bypass the switch.
Should I reset the dryer?
A reset may clear a temporary interruption, but it does not repair a recurring problem. Follow the exact model manual and do not repeatedly reset the dryer to hide a fault.
When should I call a technician?
Call for persistent humming or clicking, a no-start condition after the external checks, a hot plug or cord, a burning smell, smoke, repeated breaker trips, or any repair requiring internal access.