Vaillant
Vaillant Pipe Flow Sensor 0020211943
Vaillant pipe flow sensor for EcoTEC, EcoFit and Home combi boilers, used to detect water flow on the domestic hot water circuit.
At a glance
- Also known as 1388058
£42.91
£35.76 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 Vaillant 0020211943 is a pipe flow sensor assembly used on Vaillant combi boilers in the EcoTEC, EcoFit and Home families. It detects water flow through the domestic hot water circuit and signals the boiler to fire and modulate on a hot water demand. It is listed under flow switch components in the boiler spares range.
Signs this part needs replacing
- No hot water production despite a clear demand at the tap
- Boiler fails to fire or fires intermittently when a hot tap is opened
- Domestic hot water temperature fluctuates or runs cold during draw-off
- Boiler short-cycles or drops out on hot water demand
- Scale or debris build-up around the sensor body affecting flow detection
Before you order
- Confirm your boiler model and GC number against the fitment list above
- Check the part number on the existing sensor or pipe assembly before ordering
- Confirm whether the sensor alone or the complete pipe assembly is required for your appliance
- Isolate the boiler, drain the domestic hot water circuit and follow the manufacturer's instructions before fitting
Compliance
| Alternative numbers | 1388058 |
|---|
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| VAILLANT HOME COMBI 25 -A | 47-044-62 | 47-044-62 | — | — |
| VAILLANT HOME COMBI 30 -A | 47-044-63 | 47-044-63 | — | — |
| VAILLANT HOME COMBI 35 -A | 47-044-64 | 47-044-64 | — | — |
| VAILLANT VUW 246/7-2 | 47-044-79 | 47-044-79 | — | — |
| VAILLANT VUW 286/7-2 | 47-044-80 | 47-044-80 | — | — |
| VAILLANT VUW 346/7-2 | 47-044-81 | 47-044-81 | — | — |
| VAILLANT ecoFIT PURE 825 - VUW 256/6-3 (2016) | 47-044-68 | 47-044-68 | — | — |
| VAILLANT ecoFIT PURE 830 - VUW 306/6-3 (2016) | 47-044-74 | 47-044-74 | — | — |
| VAILLANT ecoFIT PURE 835 - VUW 356/6-3 (2016) | 47-044-70 | 47-044-70 | — | — |
| VAILLANT ecoFIT SUSTAIN 825 - VUW 256/6-3 (2016) | 47-044-71 | 47-044-71 | — | — |
Showing 10 of 18 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.
VAILLANT appliance manual — HOME COMBI 25 -A (GC 47-044-62), HOME COMBI 30 -A (GC 47-044-63), HOME COMBI 35 -A (GC 47-044-64)
manualmanualVAILLANT appliance manual — VUW 246/7-2 (GC 47-044-79), VUW 286/7-2 (GC 47-044-80), VUW 346/7-2 (GC 47-044-81), ecoTEC SUSTAIN 24 VUW 246/7-2 (2017) (GC 47-044-79), ecoTEC SUSTAIN 28 VUW 286/7-2 (2017) (GC 47-044-80), ecoTEC SUSTAIN 34 VUW 346/7-2 (2017) (GC 47-044-81)
manualmanualVAILLANT appliance manual — ecoFIT PURE 825 - VUW 256/6-3 (2016) (GC 47-044-68), ecoFIT PURE 830 - VUW 306/6-3 (2016) (GC 47-044-74), ecoFIT PURE 835 - VUW 356/6-3 (2016) (GC 47-044-70)
manualmanualVAILLANT appliance manual — ecoFIT SUSTAIN 825 - VUW 256/6-3 (2016) (GC 47-044-71), ecoFIT SUSTAIN 830 - VUW 306/6-3 (2016) (GC 47-044-72), ecoFIT SUSTAIN 835 - VUW 356/6-3 (2016) (GC 47-044-73)
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