Dryer Won't Stop Running – What Part Fixes This Problem?
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Understanding the Problem
A dryer that won't stop running either never ends a cycle or continues to run (and possibly heat) after the dial or digital timer reaches the 'end' position. This can be caused by a simple mechanical fault—like a stuck door or start switch—or by an electrical/control problem such as a failed timer or a relay on the electronic control board that stays closed. The result is wasted energy, potential clothing damage, and in some cases an increased fire risk if the dryer continues to heat unattended. Diagnosing the fault usually requires checking the basic safety and control components first: the door switch, the start/push button switch, and the cycle timer or electronic control. In many machines a stuck start switch or a welded relay on the control board is the culprit. Other possible causes include wiring shorting, a failed motor centrifugal switch, or a defective timer mechanism that doesn’t advance or open the circuit at the end of the cycle.
Common Symptoms
Dryer keeps running past end of cycle or won't turn off; timer/knob doesn't advance or respond; dryer continues to heat; on/off buttons or cycle knob unresponsive; intermittent stopping when door opened.
Common Causes
- Faulty or stuck door switch (doesn't open circuit when door is opened)
- Welded/stuck start switch or push-button (stays closed even after release)
- Defective cycle timer or mechanical timer gears stripped
- Stuck relay or failed components on the electronic control board
- Wiring short or burned connector that keeps the motor/heater energized
- Failed motor centrifugal switch (fails to open at end of cycle)
Popular Parts That Fix This Problem
These are the most common replacement parts that fix this problem. When you're ready to order, click below to find the right part at PartsDiscount.com — just search by your appliance model number for a guaranteed fit.
Helpful Repair Tip
To narrow it down quickly: while the dryer is running, open the door (careful with heat). If the dryer stops immediately, suspect the door switch. If it keeps running, power off and test the start switch and control board/relay for continuity or stuck contacts.
Frequently Asked Questions
Is it safe to keep using a dryer that won't stop running?
No — it's not recommended. A dryer that runs continuously can overheat, damage clothes, waste energy, and in worst cases raise a fire risk. Turn the dryer off and unplug it until you can diagnose or repair the problem. If the dryer continues to heat while running uncontrollably, leave it unplugged and arrange service.
How much does it cost to fix a dryer that won't stop?
Cost depends on the failed component. Replacing a door or start switch (DIY) often costs $10–$40 for the part. A mechanical timer or thermostat is typically $20–$80. Replacing an electronic control board or motor can cost $150–$400 for parts, plus labor if you hire a technician (usually $100–$250). Always verify your dryer model for exact parts and prices before purchasing.
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Whether your dishwasher won't drain, your dryer stopped heating, or your fridge isn't cold, we've created simple repair guides for the most common appliance problems homeowners face. Each guide explains what's going wrong, the most likely causes, and which replacement parts fix the issue. When you're ready to order, we link directly to PartsDiscount.com where you can search by model number and get the right part shipped fast.