Viessmann
Viessmann Adaptor (Step Motor) 7831530
Viessmann step motor adaptor, part number 7831530, for Vitodens 100-W B1HA and B1KA series boilers.
At a glance
- Also known as 2321394
£84.66
£70.55 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 Adaptor (Step Motor) is the mounting adaptor supplied for the step motor on Vitodens 100-W appliances. It is listed by Viessmann under part number 7831530 and covers the B1HA and B1KA model designations together with the wider Vitodens 100-W family. It is used where the step motor is fitted to the appliance, providing the correct interface between the motor and its mounting point.
Signs this part needs replacing
- The step motor will not seat correctly on its mounting point
- The adaptor is cracked, distorted or shows heat damage
- The step motor moves or vibrates in service instead of sitting rigidly
- Burner modulation becomes erratic after work on the step motor or gas valve
Before you order
- Confirm the appliance model and serial number against the fit list above, as the adaptor covers specific build ranges
- Check the existing step motor and its mounting area for damage before ordering, so the correct component is replaced
- Verify the part number 7831530 against the number marked on the appliance or in the Viessmann parts listing for that model
- Isolate the appliance and follow Viessmann's service instructions before removing the step motor or its adaptor
Compliance
| Alternative numbers | 2321394 |
|---|
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| VIESSMANN VITODENS 100-W B1HA 19 KW SYSTEM ERP SERIAL No. 7543420 | 41-819-36 | 41-819-36 | — | — |
| VIESSMANN VITODENS 100-W B1HA 26 KW SYSTEM ERP SERIAL No. 7543421 | 41-819-37 | 41-819-37 | — | — |
| VIESSMANN VITODENS 100-W B1HA 26 SERIAL No. 7560853 | — | — | — | |
| VIESSMANN VITODENS 100-W B1HA 30 KW SYSTEM ERP SERIAL No. 7543423 | 41-819-38 | 41-819-38 | — | — |
| VIESSMANN VITODENS 100-W B1HA 35 KW SYSTEM ERP SERIAL No. 7543425 | 41-819-39 | 41-819-39 | — | — |
| VIESSMANN VITODENS 100-W B1HA 35 SERIAL No. 7560854 | — | — | — | |
| VIESSMANN VITODENS 100-W B1HC 19 KW SYSTEM SERIAL No. 7570671 | 41-819-40 | 41-819-40 | — | — |
| VIESSMANN VITODENS 100-W B1HC 26 KW SYSTEM SERIAL No. 7570672 | 41-819-41 | 41-819-41 | — | — |
| VIESSMANN VITODENS 100-W B1HC 30 KW SYSTEM SERIAL No. 7570674 | 41-819-42 | 41-819-42 | — | — |
| VIESSMANN VITODENS 100-W B1HC 35 KW SYSTEM SERIAL No. 7570676 | 41-819-43 | 41-819-43 | — | — |
Showing 10 of 33 compatible appliances.
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