Worcester Bosch
Worcester Bosch Sensor NTC 8716121957
Worcester Bosch NTC flow temperature sensor for Greenstar 4000 GR4700iW combi and system boilers.
At a glance
- Appliance family: Greenstar 4000 GR4700iW combi and system boilers
- Also known as 2248758
£16.82
£14.02 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 SENSOR NTC is a Worcester Bosch flow temperature sensor used on Greenstar 4000 GR4700iW combi and system boilers. It provides the boiler's control system with a temperature signal from the heating circuit, allowing accurate monitoring and modulation. It is supplied under Worcester Bosch part number 8716121957.
Signs this part needs replacing
- Boiler displays a temperature-related fault code or lockout
- Flow temperature readings are erratic, implausible or fail to rise as expected
- Heating or hot water demand is intermittent despite normal controls
- Boiler short-cycles or modulates poorly due to incorrect temperature feedback
Before you order
- Confirm the boiler model and GC number against the fit list above
- Check the existing sensor's part number matches 8716121957 where visible
- Isolate the appliance electrical supply before inspection or replacement
- Verify the fault is sensor-related and not a wiring or control board issue
Compliance
| Alternative numbers | 2248758 |
|---|
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| WORCESTER GREENSTAR 4000 COMBI GR4700iW 25 C LPG | 47-800-31 | 47-800-31 | — | — |
| WORCESTER GREENSTAR 4000 COMBI GR4700iW 25 C NG | 47-800-30 | 47-800-30 | — | — |
| WORCESTER GREENSTAR 4000 COMBI GR4700iW 30 C LPG | 47-800-33 | 47-800-33 | — | — |
| WORCESTER GREENSTAR 4000 COMBI GR4700iW 30 C NG | 47-800-32 | 47-800-32 | — | — |
| WORCESTER GREENSTAR 4000 SYSTEM GR4700iW 12 S LPG | 41-800-08 | 41-800-08 | — | — |
| WORCESTER GREENSTAR 4000 SYSTEM GR4700iW 12 S NG | 41-800-07 | 41-800-07 | — | — |
| WORCESTER GREENSTAR 4000 SYSTEM GR4700iW 15 S LPG | 41-800-10 | 41-800-10 | — | — |
| WORCESTER GREENSTAR 4000 SYSTEM GR4700iW 15 S NG | 41-800-09 | 41-800-09 | — | — |
| WORCESTER GREENSTAR 4000 SYSTEM GR4700iW 18 S LPG | 41-800-12 | 41-800-12 | — | — |
| WORCESTER GREENSTAR 4000 SYSTEM GR4700iW 18 S NG | 41-800-11 | 41-800-11 | — | — |
Showing 10 of 28 compatible appliances.
Documents & drawings
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