The short answer
This page profiles the Bosch WQB-series dryer - the models whose number carries the WQB prefix - and routes you to the page for your fault. A ventless condensing dryer - this designation denotes the heat-pump condensing platform, and the tell is at the end of a cycle: the load comes out barely warm and the cycle runs long, because the machine dries below the temperature a heating element works at.
Where each fault is answered
- Tumbling without drying — Airflow rather than a failed heat source, almost every time on this platform. — Slug: bosch-bosch-dryer-wqb-dryer-heating-failure-2 — Title: Bosch WQB-series dryer not heating: what to check and in what order
- Cycles ending early or running long — A sensor programme working from a restricted loop or a filmed sensor. — Slug: bosch-bosch-dryer-wqb-dryer-cycle-fault-2 — Title: Bosch WQB-series dryer cycle stopping early or running forever: why
- A new noise — Placed by rhythm: a drum note, an airflow note and a circuit note are three faults. — Slug: bosch-bosch-dryer-wqb-dryer-abnormal-noise-2 — Title: Bosch WQB-series dryer making a new noise: what it is and where it comes from
- The machine will not start — The door, a full tank or a lock-out, in that order. — Slug: bosch-bosch-dryer-wqb-dryer-wont-start-2 — Title: Bosch WQB-series dryer that will not start: what to rule out first
Problem classes in order
- Tumbling without drying — Commonest here: heat is useless without airflow, so a restriction reads as no heat long before anything electrical fails. No share is claimed for it.
- Cycles ending early or running long — Second here: a condensing loop turns every restriction into an odd-looking cycle, and both filters in it are owner jobs that get skipped. No share is claimed for it.
- A new noise — Third here: this cabinet carries running gear a vented dryer has not got, some of it meant to be audible. No share is claimed for it.
- The machine will not start — Least common of the set: the interlocks include one a vented dryer has no equivalent for, and it surprises owners rather than failing. No share is claimed for it.
What this profile covers
Reference| Field | What the designation states |
|---|---|
| Family key | bosch:dryer:wqb |
| Model prefix | WQB |
| Heat architecture | Heat-pump condensing |
| Cabinet form | Tank or drain |
| Not stated here | Capacities, dimensions, wiring, part numbers |
Owner fix or service call
The lint filter, the exchanger behind the lower flap, the tank and the feet are owner ground here. The line is the cabinet: a meter on the heat source, a belt or anything in the refrigerant circuit means panels off.
Other families
Lead Appliance Repair Technician · 12 years experience
Experienced technician with 12 years specializing in washing machine and dryer repairs across all major brands.
