Quick Answer
If the dryer runs but the drum does not spin, a broken drive belt is the first suspect. Worn drum supports or a motor that cannot start can also leave the dryer not tumbling. Turn it off rather than letting it run with a stationary drum.
If pressing Start does nothing, check the door, settings, and power first. That symptom may be a starting problem rather than a broken belt.
Most Likely Causes
Broken drive belt
The belt connects the motor to the drum. A sudden stop, sometimes after a thump, fits a broken belt. Some models keep running when it breaks, while others have a belt switch that prevents a start. The belt is inside the cabinet.
Worn idler pulley or drum rollers
The idler pulley keeps the belt tight, and the rollers support the drum. Squealing, rumbling, or thumping before the drum stopped points toward worn parts in this system. Note what you heard, but do not open the dryer to check them.
Motor or drum obstruction
The motor turns the belt. Humming without tumbling can mean it cannot start or the drum is jammed. Clothing caught at the drum opening is visible from the door. A fault deeper inside needs diagnosis.
Door switch, thermal fuse, or power fault
If the dryer is silent, the door switch may not register a closed door, or power may be interrupted. A thermal fuse can also prevent starting on some models. It is a one-time safety device, not a reset button. Testing internal parts is technician work.
Safe Checks to Do First
If you smell gas, do not use switches or flames. Leave the home and call the gas utility or 911 from outside.
- Turn the dryer off and remove the load. Check for clothing caught between the drum and door opening, then close the door firmly.
- Check the cycle selection and turn off Control Lock if it is on. Make sure the plug is seated and check the breaker. Reset a tripped breaker once only.
- With the dryer off, empty, and cool, gently turn the drum by hand from inside. An unusually loose feel can suggest a broken belt. If it resists or sticks, do not force it. This check cannot confirm which part failed.
- Clean the lint screen. If you can see the vent hose behind the dryer without moving the machine or disturbing connections, look for a crush or blockage. Check that the outside vent flap is clear. Restricted airflow usually does not stop tumbling directly, but overheating can lead to a shutdown.
What the Symptoms Usually Mean
Dryer runs but the drum is not tumbling
A broken belt is most likely, especially if tumbling stopped suddenly. Whether the motor keeps running depends on the model.
Dryer hums but the drum does not spin
A stalled motor or jammed drive is more likely than a simple setting problem. Turn it off promptly.
Dryer stopped spinning mid-cycle
If the dryer still sounds like it is running, suspect the belt first. If it went completely silent, a motor shutdown or loss of power is more likely.
Drum spins, but clothes stay damp
If it tumbles with no heat, see dryer not heating. If it heats but drying is slow, see dryer takes too long.
When to Stop DIY and Call a Technician
Stop if the dryer hums without turning, smells hot, makes grinding noises, trips the breaker again, or the drum resists gentle hand turning. Opening the cabinet, testing electrical parts, and repairing the drive system are technician work.
If the safe checks do not restore tumbling, schedule dryer repair. Tell the technician whether the machine runs or stays silent and what noise you heard before it stopped.
From Our Repair Log
October 2026: Whirlpool Dryer Squealing. Repair in Raleigh
We replaced the roller kit, including the tension pulley and support rollers. These parts support the drum and maintain belt tension, so replacing worn rollers helps restore smooth drum movement and reduce friction that can cause squealing.
