Glow-worm
Glowworm & Saunier Duval S5739800 Temperature Sensor
At a glance
- Part type: Standard water heater
- Also known as GLOWWORMS5739800
Showing prices
£70.56
£58.80 ex. VAT · VAT at 20%
In stock
Cut-off passed — dispatches next working day
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 Glow-worm S5739800 is a water heater component listed within the Glow-worm standard water heater range. It sits on the domestic hot water side of the appliance, where the unit raises and delivers hot water to taps, showers and other outlets. The part carries Glow-worm's own numbering, so it can be matched directly against the number marked on the component being replaced.
Signs this part needs replacing
- Domestic hot water runs cold or only lukewarm at the outlet
- Delivered water temperature fluctuates noticeably between outlets or during a draw-off
- Water weeping, staining or scale build-up around the heater body or its connections
- Repeated lockouts or fault codes shown on the appliance display
- Hot water output noticeably reduced compared with normal operation
Before you order
- Note the model and GC number from the appliance data badge and check them against the compatibility list.
- Compare the number on the existing component with S5739800 before ordering.
- Check whether the connection being disturbed uses a gasket or seal that should be renewed at the same time.
Mechanical
| Part type | Standard water heater |
|---|
Compliance
| Manufacturer part number (MPN) | S5739800 |
|---|---|
| GC number | E73-490 |
| GPC classification | Household Boilers/Furnaces/Tank Water Heaters Replacement Parts/Accessories |
| Alternative numbers | 5037985011320, GLOWWORMS5739800, 254889043265, N9221 |
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| GLOWWORM BETACOM 2 24 | 47-019-16 | 47-019-16 | — | — |
| GLOWWORM BETACOM 2 28 | 47-019-17 | 47-019-17 | — | — |
| GLOWWORM BETACOM 24 A | 47-019-13 | 47-019-13 | — | — |
| GLOWWORM BETACOM 28 A | 47-019-14 | 47-019-14 | — | — |
| GLOWWORM BG330 PLUS | — | — | — | |
| GLOWWORM BRITISH GAS BG330+ | 41-019-11 | 41-019-11 | — | — |
| GLOWWORM COMPACT 24C | — | — | — | |
| GLOWWORM COMPACT 24C P | — | — | — | |
| GLOWWORM COMPACT 28C | — | — | — | |
| GLOWWORM COMPACT 28C P | — | — | — |
Showing 10 of 92 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
GLOWWORM appliance manual — BETACOM 2 24 (GC 47-019-16)
manualmanualGLOWWORM appliance manual — BETACOM 2 28 (GC 47-019-17)
manualmanualGLOWWORM appliance manual — BETACOM 24 A (GC 47-019-13), BETACOM 28 A (GC 47-019-14)
manualmanualGLOWWORM appliance manual — BRITISH GAS BG330+ (GC 41-019-11)
manualmanualGLOWWORM appliance manual — EASICOM 24 (GC 47-019-18)
manualmanualGLOWWORM appliance manual — EASICOM 28 (GC 47-019-19)
manualmanualGLOWWORM appliance manual — ENERGY 35 STORE (GC 47-019-37)
manualmanualGLOWWORM appliance manual — FLEXICOM 12HX (GC 41-315-28)
manualmanualGLOWWORM appliance manual — FLEXICOM 15HX (GC 41-315-29)
manualmanualGLOWWORM appliance manual — FLEXICOM 18HX (GC 41-315-42)
manualmanualGLOWWORM appliance manual — FLEXICOM 18SX (GC 41-315-72)
manualmanualGLOWWORM appliance manual — FLEXICOM 24CX (GC 47-047-33)
manualmanualGLOWWORM appliance manual — FLEXICOM 24HX (GC 41-315-61)
manualmanualGLOWWORM appliance manual — FLEXICOM 30CX (GC 47-047-34)
manualmanualGLOWWORM appliance manual — FLEXICOM 30HX (GC 41-315-67)
manualmanualGLOWWORM appliance manual — FLEXICOM 30SX (GC 41-047-76)
manualmanualGLOWWORM appliance manual — FLEXICOM 35CX (GC 47-047-35)
manualmanualGLOWWORM appliance manual — FLEXICOM 35HX (GC 41-315-68)
manualmanualGLOWWORM appliance manual — GW 18Si (GC 41-047-61)
manualmanualGLOWWORM appliance manual — GW 24Ci (GC 47-047-19)
manualmanualGLOWWORM appliance manual — GW 30Ci (GC 47-047-20)
manualmanualGLOWWORM appliance manual — GW 30Ci PLUS (GC 47-047-22)
manualmanualGLOWWORM appliance manual — GW 30Si (GC 41-047-70)
manualmanualGLOWWORM appliance manual — ULTIMATE 24H (GC 41-019-15)
manualmanualGLOWWORM appliance manual — ULTIMATE 30C (GC 47-044-48), ULTIMATE 35C (GC 47-044-49)
manualmanualGLOWWORM appliance manual — ULTRACOM 12HXi (GC 41-019-01)
manualmanualGLOWWORM appliance manual — ULTRACOM 15HXi (GC 41-019-02)
manualmanualGLOWWORM appliance manual — ULTRACOM 18HXi (GC 41-019-03)
manualmanualGLOWWORM appliance manual — ULTRACOM 18SXi (GC 41-019-07)
manualmanualGLOWWORM appliance manual — ULTRACOM 2 12SXi (GC 41-019-12)
manualNo technical questions yet for this part.
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