Symptoms
- Timer knob turns but doesn't select a cycle properly
- Cycle ends early or runs much longer than the dial shows
- Clicking sound from behind the control panel
- Knob feels loose or spins freely without engaging
Likely causes
- CommonWorn mechanical timer motorThe small motor that advances the timer dial wears out over years of use.
- CommonBroken or loose timer knobThe plastic knob itself can crack or strip where it attaches to the shaft.
- PossibleDirty or worn contacts inside the timer switchInternal contacts can corrode or wear, causing erratic cycle behavior.
- PossibleFailed control board (on electronic models)Digital models with a malfunctioning display or touchpad can behave similarly to a stuck timer.
- Less commonWiring issue behind the control panelA loose connector behind the panel can cause intermittent timer behavior.
What to do
- Check whether the knob itself is loose or spins without resistance, which suggests a broken knob or shaft rather than a full timer failure.
- Try selecting a different cycle to see if the problem is isolated to one setting.
- Unplug the dryer and check behind the knob for a cracked or worn attachment point.
- If comfortable, remove the control panel cover to visually inspect the timer motor and connections (consult a repair guide for your model).
- Note whether you hear a faint clicking or humming from the timer motor, which suggests it's trying to advance but failing.
- Replace a cracked knob first as the cheaper, simpler fix.
- If the knob is fine but timing is still off, have a technician test or replace the timer motor or control board.
Tools and parts
- Screwdriver
Dryer timer knobSearch: “dryer timer knob replacement”
Dryer timer motorSearch: “dryer timer assembly replacement”
When to call a pro
If the timer motor itself needs replacement, this is a fairly technical repair better handled by an appliance technician.
Safety
Generally low risk
Generally low risk for a careful person. Stop if anything looks different from what this guide describes.