Heat without tumbling points to a belt, motor, switch, or rollers issue in the dryer.
When the drum heats yet stands still, you lose patience and energy. The upside: a small set of parts causes most cases. This guide gives straight checks, safe steps, and fixes you can act on today. You will see what to test first and when to open the cabinet.
How To Diagnose A Hot Drum That Does Not Turn
Start with simple, no-tool checks. Confirm power, door closure, and the start path. Then move to the belt and support parts. These steps fit most models.
Fast Triage Before You Grab Tools
Unplug the unit. Slide it out. Clear space for safe access. Then use this quick chart to narrow the fault.
| Symptom | Likely Cause | What To Check |
|---|---|---|
| Dryer hums, drum still | Start capacitor or motor | Press start and listen; a strong hum suggests weak start boost |
| No hum, heat present | Broken belt or door switch | Open door and press switch; try a hand spin through the door |
| Drum stiff to turn | Seized rollers or rear bearing | Rotate by hand; rough scraping points to supports |
| Burnt rubber smell | Belt slipping on motor | Look for black dust near the idler and base |
| Stops mid-cycle hot | Vent blockage overheating | Check airflow at the outside hood; weak flow signals lint |
Why Heat Can Work While The Drum Sits Still
On many electric models the heater and drive motor ride different legs of a 240-volt supply. That design can let the element warm even if the motor circuit is open. If you see heat but no motion, that split supply explains the mismatch. Whirlpool’s dryer note explains the two breaker legs, one feeding the motor and the other the element: Whirlpool dryer power guide.
Close Variant: Drum Heats Up But Does Not Turn — Main Fixes
The fixes below go from easy to deeper. Take photos as you go so reassembly stays simple.
Check Door Switch And Latch
Press the switch button by hand. It should click cleanly. A failed switch blocks motor run on many models. If the light stays on with the door shut, the switch is suspect. Access is usually from the top or the front panel. Test with a meter for continuity while pressing the button. Replace if readings do not change.
Inspect The Belt Path
Remove the lower front panel or lift the top, based on your layout. Reach in and tug the belt. If it hangs loose or pulls free, it is snapped. A fresh belt is low cost and solves many no-tumble cases. While in there, spin the idler pulley. It should glide smoothly and spring back with tension.
Test The Start Capacitor
A dryer motor needs a brief boost on start. That jolt comes from a start capacitor. When it fails, you may hear a steady hum but the rotor will not move. If you spin the drum by hand while pressing start and it slowly ramps up, that clue points to the capacitor. Replace it with the same microfarad rating and voltage. Discharge the old part before removal.
Evaluate The Motor
If the capacitor is healthy and the belt path is intact, the motor could be open, shorted, or bound with lint. Spin its shaft by hand with power off. Any grinding, wobble, or tight spots mean the bearings are failing. A thermal protector on the motor may open if the vent is clogged, so clear the vent before you condemn the motor.
Inspect Rollers, Glides, And Rear Bearing
Two or more drum rollers support the tub. Flat spots or seized bearings stop rotation and chew belts. Pull the drum and spin each roller. Replace any that drag or rattle. Front glide pads can wear through and put metal on metal. Rear ball-and-socket bearings dry out and squeal, then lock.
Step-By-Step Belt Replacement
This common repair suits a careful home fix.
Tools And Prep
- ¼-inch nut driver, Phillips driver, and flat blade
- Needle-nose pliers
- Vacuum with a long crevice tool
- Phone for photos of routing
Procedure
- Disconnect power. Shut the gas valve on gas models.
- Lift the top or remove the lower front panel. Release clips with a putty knife if present.
- Note the belt route around the drum, idler, and motor pulley.
- Slip the belt off the motor and idler. Remove the front bulkhead. Lift the drum out.
- Vacuum lint from the cabinet, blower inlet, and heater shroud.
- Set the new belt around the drum grooves. Refit the drum, set the belt on the motor, then pull the idler to tension.
- Spin the drum one full turn by hand to confirm track and alignment.
- Reattach panels. Restore power and test.
How Venting Ties Into No-Tumble Complaints
Blocked airflow raises heat, trips protectors, and can stall a weak motor. Clean the filter each cycle and clear the vent path yearly. With a wet load, you should feel strong air at the outside hood. If the flap barely moves, lint is packed inside. UL writes about dryer fires and the need for vent upkeep; the piece cites “failure to clean” as a common factor. Read it here: UL guidance on dryer fire risk.
Motor And Capacitor Clues You Can Trust
Hearing a steady hum the moment you press start often points to the start boost. A weak start capacitor lets the motor draw high current without turning, so it sits and heats. If your model uses a separate run capacitor, a short there can make the motor run hot and slow. Replace caps with the correct value.
Safe Bench Testing
Always remove a capacitor and discharge it before testing. Use a meter with a microfarad range. Readings outside ±10% of the label value suggest a swap. Check the motor windings for balanced resistance across the start and run tabs. Burn marks or a sharp smell around the shell point to a failing motor.
When The Door Switch Stops The Show
A stuck door switch breaks the start path. Some models also stop heat when the switch is open; others let the element glow through a timer feed even with no drum motion. If pressing the switch by hand brings the light off and the panel beeps, the circuit is live. If nothing changes, test the switch and harness. Replace the plastic strike if it is worn; a short strike cannot press the button deep enough.
Rollers, Glides, And Bearings — Service Tips
Replace rollers in sets. Mix-and-match wear brings squeals back fast. Add a thin washer if side play lets a roller walk. Glide kits come with felt and pads; clean the frame and seat them flat. For rear bearings, grease the cup lightly and tighten the mounting screws evenly. Recheck belt track after any support work.
Common Questions On A Hot Drum That Will Not Tumble
Why Do I See Heat But No Motion?
On many dryers the heater can energize from a separate leg of power while the motor leg is blocked by a switch, a blown fuse, or a failed motor part. That is why you may feel heat through the door yet the tub sits still.
Can I Nudge The Drum To Start?
You can try a gentle push with the door open and the switch held in. If it starts, the start boost is weak. Do not keep doing this; replace the faulty part.
Is A Broken Belt Always Obvious?
Not always. A stretched belt can slip under load. If you smell burnt rubber or see black dust, plan a belt and idler swap.
Safety First While You Work
Unplug the unit. Close the gas valve on gas models. Wear cut-proof gloves when reaching near the cabinet edges. Keep screws in a cup. Use a magnetic tray for hardware. Keep kids and pets away from the workspace while panels are off. Take photos so each connector lands back on the right tab.
Maintenance That Prevents The Next Stall
Good airflow keeps heat and motor load in check. Keep the filter clean every cycle. Pull the vent off yearly and brush the run to the outside hood. Shorten flex duct and switch to smooth metal where you can. After a belt job, vacuum lint under the baffles and at the blower.
Quick Maintenance Planner
| Task | Ideal Frequency | Why It Matters |
|---|---|---|
| Clean lint filter | Every cycle | Airflow stays high; heat stays stable |
| Vacuum under lint screen | Every 6 months | Hidden lint near the heater drops fire risk |
| Brush and clear vent | Yearly | Prevents trips and motor strain |
| Inspect belt and idler | Yearly | Catches stretch and bearing wear early |
| Spin test rollers | Yearly | Stops flat spots from stalling the drum |
Parts List To Keep On Hand
A spare belt for your model saves a trip. Add one idler pulley, a small tube of high-temp grease, and a pack of panel clips. If your dryer is over eight years old, consider a roller kit.
When To Call A Technician
Book service if the motor trips the breaker, the shell arcs, or wiring looks charred. Also call if you smell strong electrical odor after a new belt and clean vent. Those signs point to a failing motor or a ground fault.
References You Can Trust
For a brand guide on a non-turning drum, GE lists belt and support parts as prime suspects here: GE help page on a non-spinning drum. For safety facts on lint and fire risk, the UL note linked above has clear tips backed by national data.