Viessmann
Viessmann Step Motor 7841824
Viessmann 7841824 step motor, fitted to Vitodens 050-W and 200-W boilers as part of the diverter valve assembly.
At a glance
- Also known as 2321326
£157.96
£131.63 ex. VAT · VAT at 20%
Same-day dispatch
Ordered by 4pm Mon–Fri, 10:30am Sat.
30-day returns
Unused, in original packaging.
What it is
The Viessmann 7841824 is a step motor used on Vitodens 050-W and Vitodens 200-W gas boilers. It forms part of the diverter valve assembly, providing the controlled movement that positions the valve. It is supplied as a single motor unit.
Signs this part needs replacing
- The diverter valve does not change position, so domestic hot water or heating demand is not met
- Heating circuit warms when only hot water is drawn, or hot water runs cold during a heating demand
- The motor runs but the valve spindle does not move, or the motor stalls and buzzes
- Visible signs of overheating, burning or a seized motor body
- Boiler fault codes relating to the diverter valve or its actuator
Before you order
- Confirm the boiler model and serial number against the fit list above
- Check the existing motor part number or label on the boiler before ordering
- Isolate the electrical supply to the boiler before removing or fitting the motor
- Inspect the diverter valve body and spindle for damage or scale, as a seized valve can damage a new motor
Compliance
| Alternative numbers | 2321326 |
|---|
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| VIESSMANN VITODENS 050-W BPJC 29 KW COMBI SERIAL No. 7537906 | 47-819-31 | 47-819-31 | — | — |
| VIESSMANN VITODENS 050-W BPJC 35 KW COMBI SERIAL No. 7537947 | 47-819-32 | 47-819-32 | — | — |
| VIESSMANN VITODENS 050-W BPJD 29KW COMBI SERIAL No. 7202938 | 47-819-38 | 47-819-38 | — | — |
| VIESSMANN VITODENS 050-W BPJD 35 KW COMBI SERIAL No. 7202939 | 47-819-39 | 47-819-39 | — | — |
| VIESSMANN VITODENS 200-W B2HB 19 KW SYSTEM SERIAL No. 7570787 | 41-819-32 | 41-819-32 | — | — |
| VIESSMANN VITODENS 200-W B2HB 26 KW SYSTEM SERIAL No. 7570788 | 41-819-33 | 41-819-33 | — | — |
| VIESSMANN VITODENS 200-W B2HB 30 KW SYSTEM SERIAL No. 7570790 | 41-819-34 | 41-819-34 | — | — |
| VIESSMANN VITODENS 200-W B2HB 35 KW SYSTEM SERIAL No. 7570792 | 41-819-35 | 41-819-35 | — | — |
| VIESSMANN VITODENS 200-W B2KB 26 KW COMBI SERIAL No. 7570789 | 47-819-28 | 47-819-28 | — | — |
| VIESSMANN VITODENS 200-W B2KB 30 KW COMBI SERIAL No. 7570791 | 47-819-29 | 47-819-29 | — | — |
Showing 10 of 11 compatible appliances.
Documents & drawings
Everything we hold for this part. Where a document exists but we don't hold it, the technical team will source it from the manufacturer — usually the same working day.
No documents held for this part. The technical team will source them from the manufacturer — usually the same working day.
No technical questions yet for this part.
Not sure which part?
Search by part number, product name or brand — our technical team confirms fitment before anything is dispatched.