Viessmann
Viessmann Water Switch / Flow Switch 7823542
Viessmann water switch / flow switch, short pattern without resistance, for Vitodens 200-W combi boilers.
At a glance
- Also known as 2320744
£126.36
£105.30 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 water switch / flow switch, supplied in the short pattern without resistance. It is fitted in the hydraulic circuit of Vitodens 200-W combi boilers, where it detects water flow and signals the boiler to commence heating or hot water operation. The switch carries Viessmann part number 7823542.
Signs this part needs replacing
- Boiler fails to fire on a hot water demand despite adequate flow at the tap
- Central heating does not start when there is a call for heat
- Intermittent or erratic burner operation linked to water flow
- Fault code or lockout relating to water flow detection
- Hot water delivery cycling on and off during draw-off
Before you order
- Confirm the boiler model and serial number against the fit list above
- Check the existing switch is the short pattern without resistance
- Verify the part number 7823542 on the old component or boiler documentation
- Inspect the hydraulic circuit for debris or scale that may have caused the original failure
Compliance
| Alternative numbers | 2320744 |
|---|
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| VIESSMANN VITODENS 200-W B2KA 26 KW COMBI SERIAL No. 7454870 | 47-819-28 | 47-819-28 | — | — |
| VIESSMANN VITODENS 200-W B2KA 30 KW COMBI SERIAL No. 7454872 | 47-819-29 | 47-819-29 | — | — |
| VIESSMANN VITODENS 200-W B2KA 35 KW COMBI SERIAL No. 7454874 | 47-819-30 | 47-819-30 | — | — |
| VIESSMANN VITODENS 200-W WB2B 26KW SERIAL No. 7248825 | 47-819-09 | 47-819-09 | — | — |
| VIESSMANN VITODENS 200-W WB2B 30KW SERIAL No. 7248827 | 47-819-10 | 47-819-10 | — | — |
| VIESSMANN VITODENS 200-W WB2B 35KW SERIAL No. 7248829 | 47-819-11 | 47-819-11 | — | — |
| VIESSMANN VITODENS 200-W WB2C 26KW SERIAL No. 7424987 | 47-819-09 | 47-819-09 | — | — |
| VIESSMANN VITODENS 200-W WB2C 30KW SERIAL No. 7424989 | 47-819-10 | 47-819-10 | — | — |
| VIESSMANN VITODENS 200-W WB2C 35KW SERIAL No. 7424991 | 47-819-11 | 47-819-11 | — | — |
Documents & drawings
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