Worcester Bosch
Worcester Bosch Temperature Sensor NTC 12K 6000mm 7735502304
Worcester Bosch NTC temperature sensor, 12K with a 6000mm lead, for Greenstar and British Gas badged boilers. Part 7735502304.
At a glance
- Part type: Temperature sensor (NTC)
- Also known as 1038194
- This part is fitted to a gas appliance; installation must be carried out by a Gas Safe registered engineer.
£95.82
£79.85 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 Worcester 7735502304 is an NTC temperature sensor supplied with a 6000mm lead. It is fitted across a range of Worcester Bosch and British Gas badged gas boilers, where it feeds temperature information back to the appliance control board so the boiler can regulate heating and hot water output. The sensor is a direct replacement for the original fitment in the models listed below.
Signs this part needs replacing
- The boiler locks out or fails to fire on a call for heat or hot water.
- Heating flow or domestic hot water temperature drifts away from the setpoint, running hot then cold.
- Fault codes relating to temperature sensing appear on the appliance display.
- The appliance cycles on and off more frequently than normal.
- A resistance reading taken across the sensor with a multimeter falls outside the expected range for the appliance.
Before you order
- Check the GC number and appliance serial plate against the compatibility list to confirm the sensor suits your model.
- Compare the part number on the existing sensor with the previous numbers listed here before ordering.
- This part is fitted to a gas appliance; installation must be carried out by a Gas Safe registered engineer.
Mechanical
| Part type | Thermostats, Thermistors & Sensors |
|---|
Compliance
| Manufacturer part number (MPN) | 7735502304 |
|---|---|
| GC number | 797-731 |
| Barcode / EAN | 7735502304 |
| Commodity code | 8533 40 00 00 |
| GPC classification | Household Boilers/Furnaces/Tank Water Heaters Replacement Parts/Accessories |
| Alternative numbers | 8-714-500-034-0, 1038194 |
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| WORCESTER BOULTER BUDERUS KSO105SC20 | — | — | — | |
| WORCESTER BRITISH GAS 430/I | 41-311-80 | 41-311-80 | — | — |
| WORCESTER BRITISH GAS GREENSTAR 430/I SYSTEM LPG | 41-311-81 | 41-311-81 | — | — |
| WORCESTER GREENSTAR 30CDI ErP CLASSIC LPG | 41-406-38 | 41-406-38 | — | — |
| WORCESTER GREENSTAR 30CDI ErP CLASSIC NG | 41-406-37 | 41-406-37 | — | — |
| WORCESTER GREENSTAR 30CDI SYSTEM LPG | 41-311-97 | 41-311-97 | — | — |
| WORCESTER GREENSTAR 30CDI SYSTEM NG | 41-311-93 | 41-311-93 | — | — |
| WORCESTER GREENSTAR 35CDI ErP CLASSIC SYSTEM LPG | 41-406-40 | 41-406-40 | — | — |
| WORCESTER GREENSTAR 35CDI ErP CLASSIC SYSTEM NG | 41-406-39 | 41-406-39 | — | — |
| WORCESTER WORCESTER 430i NATURAL GAS | — | — | — |
Showing 10 of 15 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.
WORCESTER appliance manual — BRITISH GAS 430/I (GC 41-311-80), BRITISH GAS GREENSTAR 430/I SYSTEM LPG (GC 41-311-81)
manualmanualWORCESTER appliance manual — GREENSTAR 30CDI ErP CLASSIC LPG (GC 41-406-38), GREENSTAR 30CDI ErP CLASSIC NG (GC 41-406-37)
manualmanualWORCESTER appliance manual — GREENSTAR 30CDI SYSTEM LPG (GC 41-311-97), GREENSTAR 30CDI SYSTEM NG (GC 41-311-93)
manualmanualWORCESTER appliance manual — GREENSTAR 35CDI ErP CLASSIC SYSTEM LPG (GC 41-406-40), GREENSTAR 35CDI ErP CLASSIC SYSTEM NG (GC 41-406-39)
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