Viessmann
Viessmann Cable Wiring Harness Ionisation/KM-Bus 7822948
Viessmann cable wiring harness for ionisation and KM-BUS connections, part number 7822948.
At a glance
- Also known as 2321758
£33.50
£27.92 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
This is a Viessmann cable wiring harness carrying the ionisation and KM-BUS connections, supplied under part number 7822948. It is used on Viessmann Vitodens WB3A appliances built from 30.01.2004. The harness links the ionisation electrode and the KM-BUS communication path to the appliance control, so both flame sensing and bus communication depend on its continuity.
Signs this part needs replacing
- Repeated ignition lockouts where the burner lights but the control does not register flame
- Flame supervision faults traced to a broken or intermittent ionisation lead
- KM-BUS communication errors between the appliance and the connected control
- Visible damage to the harness: chafed insulation, scorched or brittle cable, corroded or loose plug terminals
Before you order
- Confirm the appliance is a Vitodens WB3A built from 30.01.2004
- Match the serial number against the fitment list above
- Check the existing harness routing and plug connections for damage before ordering
- Have the appliance model and serial number to hand when ordering
Compliance
| Alternative numbers | 2321758 |
|---|
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| VIESSMANN VITODENS WB3A COMBI 26KW SERIAL No. 7176538 | — | — | — | |
| VIESSMANN VITODENS WB3A SYSTEM 26KW SERIAL No. 7176537 | — | — | — | |
| VIESSMANN VITODENS WB3A SYSTEM 35KW SERIAL No. 7176539 | — | — | — | |
| VIESSMANN VITODENS WB3A SYSTEM 49KW SERIAL No. 7176778 | — | — | — | |
| VIESSMANN VITODENS WB3A SYSTEM 66KW SERIAL No. 7176779 | — | — | — |
Documents & drawings
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