Dryer Stops Mid-Cycle or Shuts Off Before Dry
A dryer that runs for a while then shuts off — or stops before the clothes are dry — is usually protecting itself from overheating, or has an intermittent electrical fault. Here is how to track it down.
1. Clogged Vent (Overheating)
The most common cause. A restricted vent traps heat, and the dryer's safety thermostat shuts it down when it gets too hot. The dryer then needs to cool before it will restart. Clean the lint screen and the entire vent run — this fixes most "stops partway" cases and prevents a blown thermal fuse.
2. Failing Thermal Fuse or Thermostat
A weak thermal fuse or cycling thermostat can trip early and cut the heat or the motor. These are inexpensive parts; if the vent is clear but the dryer still overheats and quits, test and replace them. Always fix the vent first or the new part fails again.
3. Worn Door Switch
If the dryer stops randomly (not heat-related), a worn door switch may be cutting out when the dryer vibrates. Wiggle-test the door while running (carefully); if it stops, replace the door switch.
4. Moisture Sensor (Auto-Dry Cycles)
On auto/sensor-dry cycles, the dryer stops when the moisture sensor bars (two metal strips inside the drum) read the clothes as dry. Fabric-softener film on the sensor bars can fool them into stopping early. Wipe the sensor bars with a little rubbing alcohol. Or just use a timed-dry cycle.
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FAQ
Usually a clogged vent overheating the dryer (it shuts off to protect itself), or on auto-dry cycles, a moisture sensor fooled by softener film. Clean the vent and wipe the sensor bars.
Often overheating from a blocked vent tripping the safety thermostat, or a failing thermal fuse. Clean the full vent run first, then test the thermal components.
Always unplug an appliance and shut off its water supply before servicing. This guide is informational and not a substitute for a qualified technician.