Vaillant
Vaillant Aqua-Sensor 194819
Aqua sensor complete for Vaillant Turbomax Plus, Turbomax Pro and Aquaplus gas boilers.
At a glance
- Also known as 1374111, N2178
Showing prices
£122.53
£102.11 ex. VAT · VAT at 20%
Available to order · 3 working days
Available to order · 3 working days
Not certain it's the right part? The technical team verifies fitment before dispatch — no charge, and it stops a second trip.Call the technical teamSend a technical question
Same-day dispatch
Ordered by 4pm Mon–Fri, 10:30am Sat.
30-day returns
Unused, in original packaging.
What it is
The Vaillant 194819 Aqua-Sensor is an aqua sensor complete for Vaillant gas boilers. It is listed for Turbomax Plus and Turbomax Pro appliances, with fitment across related VUW and VUI models. The part is used in the boiler's water sensing system.
Signs this part needs replacing
- No domestic hot water or intermittent hot water
- Boiler does not fire on a hot water draw
- Hot water demand is not recognised by the boiler
- Inconsistent hot water temperature
- Water flow-related fault codes logged by the boiler
Before you order
- Confirm the appliance model and GC number against the fitment list.
- Check the existing sensor part number is 194819.
- Inspect the sensor and its electrical connections before ordering.
- Verify the boiler is a Vaillant Turbomax Plus, Turbomax Pro, or listed VUW/VUI model.
Compliance
| Barcode / EAN | 4024074366752 |
|---|---|
| Alternative numbers | 1374111, N2178 |
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| VAILLANT TURBOmax Plus 824E VUW 242-5 (2000-2001) | 47-044-04 | 47-044-04 | — | — |
| VAILLANT TURBOmax Plus 824E VUW 242/2-5 (2001-2002) | 47-044-04 | 47-044-04 | — | — |
| VAILLANT TURBOmax Plus 824E VUW 242/2-5 R1 (2002-2002) | 47-044-04 | 47-044-04 | — | — |
| VAILLANT TURBOmax Plus 824E VUW 242/2-5 R2 (2003-2004) | 47-044-04 | 47-044-04 | — | — |
| VAILLANT TURBOmax Plus 824E VUW 242/2-5 R3 (2004-2004) | 47-044-04 | 47-044-04 | — | — |
| VAILLANT TURBOmax Plus 828E VUW 282-5 (2000-2001) | 47-044-09 | 47-044-09 | — | — |
| VAILLANT TURBOmax Plus 828E VUW 282/2-5 (2001-2002) | 47-044-09 | 47-044-09 | — | — |
| VAILLANT TURBOmax Plus 828E VUW 282/2-5 R1 (2002-2002) | 47-044-09 | 47-044-09 | — | — |
| VAILLANT TURBOmax Plus 828E VUW 282/2-5 R3 (2004-2004) | 47-044-09 | 47-044-09 | — | — |
| VAILLANT TURBOmax Plus 836E VUW 362/2-5 (2002-2004) | 47-044-28 | 47-044-28 | — | — |
Showing 10 of 71 compatible appliances.
Fitment listings are a guide, not a guarantee. Plant-room assemblies get modified on site more often than not. Send us the GC number off the data badge and a photo of the existing valve and we will confirm before anything is dispatched.
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.
manual
VAILLANT appliance manual — TURBOmax Plus 824E VUW 242-5 (2000-2001) (GC 47-044-04), TURBOmax Plus 824E VUW 242/2-5 (2001-2002) (GC 47-044-04), TURBOmax Plus 824E VUW 242/2-5 R1 (2002-2002) (GC 47-044-04), TURBOmax Plus 824E VUW 242/2-5 R2 (2003-2004) (GC 47-044-04), TURBOmax Plus 824E VUW 242/2-5 R3 (2004-2004) (GC 47-044-04), TURBOmax Plus 828E VUW 282/2-5 (2001-2002) (GC 47-044-09), TURBOmax Plus 828E VUW 282/2-5 R1 (2002-2002) (GC 47-044-09), TURBOmax Plus 828E VUW 282/2-5 R3 (2004-2004) (GC 47-044-09), TURBOmax Plus 836E VUW 362/2-5 (2002-2004) (GC 47-044-28), TURBOmax Plus 836E VUW 362/2-5 R3 (2004-2004) (GC 47-044-28), TURBOmax Plus 837E VUW 362/2-5 (2002-2004) (GC 47-044-28), TURBOmax Plus 837E VUW 362/2-5 R3 (2004-2004) (GC 47-044-28), VUW 242-5 (GC 47-044-04), VUW 242/2-5 (GC 47-044-04), VUW 242/2-5 R1 (GC 47-044-04), VUW 242/2-5 R2 (GC 47-044-04), VUW 242/2-5 R3 (GC 47-044-04), VUW 282/2-5 (GC 47-044-09), VUW 282/2-5 R1 (GC 47-044-09), VUW 282/2-5 R2 (GC 47-044-09), VUW 282/2-5 R3 (GC 47-044-09), VUW 362/2-5 (GC 47-044-28), VUW 362/2-5 R3 (GC 47-044-28)
manualmanualVAILLANT appliance manual — TURBOmax Pro 24E VUW 242-3 (2000-2001) (GC 47-044-10), TURBOmax Pro 24E VUW 242/2-3 R1 (2002-2002) (GC 47-044-10), TURBOmax Pro 24E VUW 242/2-3 R2 (2003-2004) (GC 47-044-10), TURBOmax Pro 24E VUW 242/2-3 R3 (2004-2004) (GC 47-044-10), TURBOmax Pro 28E VUW 282-3 (2000-2001) (GC 47-044-11), TURBOmax Pro 28E VUW 282/2-3 R1 (2002-2002) (GC 47-044-11), TURBOmax Pro 28E VUW 282/2-3 R2 (2003-2004) (GC 47-044-11), TURBOmax Pro 28E VUW 282/2-3 R3 (2004-2004) (GC 47-044-11), VUW 242-3 (GC 47-044-10), VUW 242/2-3 R1 (GC 47-044-10), VUW 242/2-3 R2 (GC 47-044-10), VUW 242/2-3 R3 (GC 47-044-10), VUW 282/2-3 R1 (GC 47-044-11), VUW 282/2-3 R2 (GC 47-044-11), VUW 282/2-3 R3 (GC 47-044-11)
manualmanualVAILLANT appliance manual — TURBOmax Pro 24E VUW 242/2-3 (2001-2002) (GC 47-044-10), TURBOmax Pro 28E VUW 282/2-3 (2001-2002) (GC 47-044-11), VUW 242/2-3 (GC 47-044-10), VUW 282/2-3 (GC 47-044-11)
manualmanualVAILLANT appliance manual — VUI 362-7 (GC 47-044-29), VUI 362-7 R3 (GC 47-044-29), aquaPLUS VUI 362-7 (2002-2005) (GC 47-044-29), aquaPLUS VUI 362-7 R3 (2005-2008) (GC 47-044-29)
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