Worcester Bosch
Worcester Bosch Flow Sensor 8737713706
Worcester Bosch flow sensor, part number 8737713706, for Greenstar 1000 and 2000 series appliances.
At a glance
- Appliance family: Greenstar 1000 and Greenstar 2000 series
- Also known as 1038433
£22.25
£18.54 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 flow sensor is a Worcester Bosch component, part number 8737713706. It is fitted to Worcester Bosch Greenstar 1000 and Greenstar 2000 series appliances and monitors water flow through the appliance. The sensor provides the flow signal the boiler uses to regulate its operation.
Signs this part needs replacing
- Domestic hot water demand is not detected and the boiler does not fire
- Hot water delivery is intermittent despite the tap or outlet being fully open
- Domestic hot water temperature fluctuates during draw-off
- The appliance behaves differently on hot water than on heating demand
- Flow-related faults are recorded against the hot water circuit
Before you order
- Check the appliance model against the fit list to confirm compatibility with the Greenstar 1000 or 2000 series
- Confirm the existing component is marked with part number 8737713706
- Identify whether the fault lies with the flow sensor or with another part of the hot water circuit before ordering
- Check the appliance data badge and any fault codes logged by the boiler
Compliance
| Alternative numbers | 1038433 |
|---|
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| WORCESTER GREENSTAR 1000 SERIES GR1000W 24 C NG | 47-800-38 | 47-800-38 | — | — |
| WORCESTER GREENSTAR 1000 SERIES GR1000W 30 C NG | 47-800-39 | 47-800-39 | — | — |
| WORCESTER GREENSTAR 2000 COMBI GR2301iW 25 C LPG | 47-800-35 | 47-800-35 | — | — |
| WORCESTER GREENSTAR 2000 COMBI GR2301iW 25 C NG | 47-800-34 | 47-800-34 | — | — |
| WORCESTER GREENSTAR 2000 COMBI GR2301iW 30 C LPG | 47-800-37 | 47-800-37 | — | — |
| WORCESTER GREENSTAR 2000 COMBI GR2301iW 30 C NG | 47-800-36 | 47-800-36 | — | — |
| WORCESTER GREENSTAR GR1000W 24 C NG | — | — | — | |
| WORCESTER GREENSTAR GR1000W 30 C NG | — | — | — | |
| WORCESTER GREENSTAR GR2301iW 25 C LPG COMBI | — | — | — | |
| WORCESTER GREENSTAR GR2301iW 25 C NG COMBI | — | — | — |
Showing 10 of 12 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.
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