Why won't my Bosch dryer spin?#
The fastest clue to a Bosch dryer that won't spin is how the drum feels when you turn it by hand: spins with zero resistance and the drive belt has snapped; turns with normal resistance but sits dead during a cycle and the motor or board isn't driving it; won't budge and something has seized. Bosch's WTW/WGA compact dryers run a brushless EcoSilence motor to the drum through a poly-V belt and a spring tensioner, and the belt is by far the most common failure.
Bosch dryer not spinning: ranked causes#
| Likely cause | Share | Hand-spin feel |
|---|---|---|
| Broken drive belt | 45% | The drum spins freely with no resistance |
| EcoSilence motor or board fault | 25% | Normal resistance, but no motor sound at start |
| Seized tensioner pulley | 15% | The motor may strain briefly, then cut out |
| Overload protection tripped | 10% | Happened after a heavy, soaking load |
| Door switch not confirming closed | 5% | No start at all until the door latches |
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Gas leak detector ($130), thermal fuse tester ($95), belt tension gauge, and vent inspection camera ($180). Our technician arrives with $3,000+ in professional tools — your diagnostic is free.
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How to diagnose a Bosch dryer that won't spin#
- Open the door and spin the drum by hand. A free, frictionless spin means the poly-V belt has broken — with the belt gone there's no link between motor and drum.
- If the drum has normal resistance, start a cycle and listen. Silence points at an electrical fault — the brushless motor's inverter circuit on the board, or a tripped motor thermal protector, more often than the motor windings themselves.
- Pull the top panel (two Torx T20 screws) and spin the tensioner pulley by hand. Roughness or a seized pulley stops the belt from moving even when it's intact.
- Think about the last load. A king comforter or a soaking-wet load can exceed the motor's starting torque and trip its protection — lighten the load and restart.
- Confirm the door. If the door interlock doesn't register closed, the motor never starts; a drive or motor code at start-up points back to the motor or board.
- If nothing is obviously wrong, do a hard reset — unplug the dryer for a minute to clear a latched fault and reset the thermal timer — then run an empty cycle and watch whether the drum turns at all before you open the cabinet.
A belt or tensioner is a moderate DIY job (the top and front panels come off); motor and board diagnosis is advanced and usually a technician's call.
Is a Bosch dryer not-spinning repair worth it?#
Usually yes — the most common cause, a broken belt, is an inexpensive part, and a seized tensioner isn't much more. Only a motor or control board pushes it higher, so weigh that on an older dryer. Not overstuffing the drum keeps the motor protection from tripping and eases belt wear. For a same-day diagnosis, book a repair.
Safety First — Know the Risks
Gas dryers carry carbon monoxide and explosion risk. Even electric dryers involve 240V circuits that can deliver a fatal shock. Our techs are licensed and insured — let them handle the risk.
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Bosch dryer not spinning: frequently asked questions#
My Bosch dryer drum spins super easily by hand — what broke?#
The drive belt. Once the poly-V belt snaps there's no mechanical link between motor and drum, so it spins with almost no friction. A new belt restores the connection.
The motor makes no sound at all when I start it — is the motor dead?#
Not necessarily. With the belt intact and the drum turning normally by hand, silence at start usually points at the board's motor-drive circuit or a tripped thermal protector rather than a failed brushless motor.
It stopped spinning after a big wet load — is it broken?#
Probably just tripped overload protection. A heavy, soaking load can exceed the motor's starting torque; lighten the load, let it rest, and restart before assuming a part failed.
Appliance Repair Technician · 8 years experience
Experienced technician with 8 years specializing in dishwasher repairs and European appliance brands including Bosch and Thermador.
