Viessmann
Viessmann Microswitch Vitodens 300 WB3A 7822902
Viessmann microswitch 7822902 for Vitodens 300 WB3A system boilers built from 30 March 2004.
At a glance
- Appliance family: Vitodens 300 WB3A
- Also known as 2321410
£39.43
£32.86 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 7822902 is a microswitch for the Vitodens 300 WB3A system boiler, applicable to appliances built from 30 March 2004. It sits in the boiler's flow switch circuit and signals a flow condition to the appliance control. It is a service component for the WB3A range.
Signs this part needs replacing
- Boiler does not register a flow demand and fails to fire
- Intermittent lockout or unexpected shutdown during operation
- No heating or hot water when there is a call for heat
- Microswitch does not click or operate when the flow switch is actuated
- Visible damage, corrosion or a loose lever on the switch body
Before you order
- Confirm the appliance is a Vitodens 300 WB3A system boiler
- Check the serial number against the fit list where applicable
- Confirm the boiler was manufactured on or after 30.03.2004
- Compare the markings on the existing microswitch with part number 7822902
Compliance
| Alternative numbers | 2321410 |
|---|
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| VIESSMANN VITODENS WB3A SYSTEM 49KW | — | — | — | |
| VIESSMANN VITODENS WB3A SYSTEM 49KW SERIAL No. 7176778 | — | — | — | |
| VIESSMANN VITODENS WB3A SYSTEM 66KW | — | — | — | |
| VIESSMANN VITODENS WB3A SYSTEM 66KW SERIAL No. 7176779 | — | — | — |
Documents & drawings
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No documents held for this part. The technical team will source them from the manufacturer — usually the same working day.
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