Why does my dryer shut off mid-cycle?
Updated August 2026
A dryer that quits partway through a cycle is usually overheating because a blocked vent tripped its thermal cutoff, the safety switch that kills the machine when cabinet temperature climbs too high. With the exhaust choked, heat builds until the cutoff stops everything, then the dryer restarts once it cools and quits again. Clearing the full vent run is the fix and it is free to cheap. The ranked causes below cover the cases where a clean vent does not settle it.
Safety first: a dryer that keeps shutting off from overheating is not a nuisance to work around, it is the machine warning you that heat is building where it should not. The lint packing the vent is the leading fuel for dryer fires, so clear the entire run before you run more loads. Unplug an electric dryer before opening any panel, and if the cabinet is hot to the touch or you smell scorching, treat it as urgent.
Causes, most likely first
| Cause | How likely | The fix | Typical cost |
|---|---|---|---|
| Blocked vent overheating the dryer | Most common | Clean the lint screen and the entire duct to the exterior hood. The cutoff is doing its job; the vent is the real problem. | Free to $200 |
| Failed thermal cutoff or cycling thermostat | Common | A weak thermostat can trip early even with good airflow. Test and replace the tripping switch. | $15–40 part |
| Fouled moisture sensor ending auto cycles early | Common | On sensor-dry cycles, residue on the sensor bars can read the load as dry and stop it. Wipe the bars clean. | Free |
| Overheating or failing drive motor | Occasional | A worn motor with a thermal overload cuts out when hot, then restarts when cool. Replace the motor. | $150–300 installed |
| Loose or failing door switch | Occasional | A door switch that drops contact mid-tumble stops the machine as if the door opened. Replace it. | $10–30 part |
| Faulty control board or timer | Rare | A glitching board or timer can end cycles at random. A tech diagnoses and replaces it. | $100–250 |
Check these first
- Note whether it stops on a timed cycle or only on auto/sensor cycles: sensor-only stops point at the moisture-sensor bars.
- Clean the lint screen and the vent duct, then confirm strong warm airflow at the outside hood.
- Feel the top and sides of the dryer near the end of a run. Excess heat confirms the cutoff is tripping for a reason.
- Watch whether it restarts on its own after cooling for a while, the signature of a thermal trip.
- Wiggle the door to make sure the switch holds contact through a full tumble.
Prevent it next time
Overheating shutoffs almost always trace back to a vent nobody cleaned, so a yearly duct cleaning keeps the cutoff from ever tripping and drops your fire risk at the same time. Use the seasonal tasks in our dryer maintenance checklist and do not skip them during heavy-use stretches. The cost of dryer vent neglect spells out how a free cleaning heads off both the repeat shutoffs and the far larger cost of a lint fire.
When to call a pro
Call a technician when a clean vent does not stop the shutoffs, when the machine restarts only after a long cooldown (a thermal-overload pattern in the motor), or when you would need to test switches with a meter. A thermostat or cutoff is a $15–40 part, a motor replacement runs $150–300, and a control-board repair $100–250. Stack that against the machine's age with our dryer lifespan guide, since a board repair on a 12-year-old dryer rarely pays off.
Most of the causes above are maintenance problems wearing a disguise. OnOtto keeps the boring prevention on schedule so the 2 a.m. version doesn't happen.
Stop chasing symptoms, free for 30 daysFrequently asked questions
Why does my dryer stop after about 10 minutes?
A stop around the 10-minute mark is the classic overheating pattern: the cabinet reaches the trip temperature of the thermal cutoff and the machine shuts down to protect itself. The usual cause is a blocked vent that will not let heat escape. It can also be a weak cycling thermostat tripping early. Clean the entire vent run first and feel the dryer for excess heat. If it stops the same way after a clean vent, test the thermostat and cutoff.
Is a dryer that shuts off mid-cycle a fire hazard?
It can be. When the shutoff is caused by overheating behind a clogged vent, the same trapped heat and packed lint are exactly the conditions that start dryer fires. The cutoff switching the machine off is the last-line safety working as intended, not a sign that everything is fine. Treat repeated overheating shutoffs as a reason to clean the full vent immediately, and stop running the dryer until you have cleared it.
What is the difference between the thermal fuse and the thermal cutoff?
Both are heat-triggered safeties, but they behave differently. A thermal fuse is one-time: when it blows from overheating it must be replaced, and the dryer usually goes dead or loses heat entirely. A thermal cutoff or high-limit thermostat can be resettable or one-time depending on the design, and a cycling thermostat opens and closes repeatedly to regulate temperature. A dryer that shuts off then restarts after cooling is tripping a resetting switch, while a dryer that stays dead has likely blown a one-time fuse.
Why does my dryer only stop on the auto-dry setting?
If it runs fine on a timed cycle but quits early on auto or sensor dry, the moisture-sensor bars are the likely cause. Those metal strips inside the drum read how wet the clothes are, and a film of dryer-sheet residue can trick them into reading a wet load as dry, so the cycle ends prematurely. Wipe the sensor bars with a little vinegar or rubbing alcohol. If timed cycles also cut out, look at the vent and thermostats instead.