Worcester Bosch
Worcester Bosch Printed Circuit Board Greenstar 8748300938
At a glance
- Part type: Printed circuit board
- Appliance family: Greenstar i System
- Also known as WB8748300938, 1038188
- This part is fitted to a gas appliance; installation must be carried out by a Gas Safe registered engineer.
£108.04
£90.03 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 Bosch 8748300938 is a printed circuit board (PCB) for the Greenstar range of gas-fired boilers. It is the main control board, handling the ignition sequence, fan and pump operation, temperature sensing and the safety interlocks that govern burner demand. The board is supplied as a service replacement for the original factory-fitted unit.
Signs this part needs replacing
- The boiler fails to fire, or locks out repeatedly on demand
- No heating or hot water, with a blank or unresponsive display
- Fault codes relating to the board, fan, pump or sensor communication
- The fan or pump does not run when a demand is called
- Intermittent running, random shutdowns or erratic temperature control
Before you order
- Check the GC number and the appliance data badge to confirm the correct board for your model.
- Confirm the existing board carries part number 8748300938 or one of the alternative numbers listed below.
- This part is fitted to a gas appliance; installation must be carried out by a Gas Safe registered engineer.
Mechanical
| Part type | Printed circuit board |
|---|---|
| Appliance family | Greenstar i System |
Compliance
| Manufacturer part number (MPN) | 8748300938 |
|---|---|
| GC number | H28-966 |
| Barcode / EAN | 8748300938 |
| Commodity code | 8403 90 00 00 |
| GPC classification | Household Boilers/Furnaces/Tank Water Heaters Replacement Parts/Accessories |
| Alternative numbers | WB8748300938, WB87161095390, 8-716-109-539-0, 1038188 |
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| WORCESTER GREENSTAR 12i SYSTEM LPG | 41-311-69 | 41-311-69 | — | — |
| WORCESTER GREENSTAR 12i SYSTEM NG | 41-311-67 | 41-311-67 | — | — |
| WORCESTER GREENSTAR 15I SYSTEM LPG | 41-406-26 | 41-406-26 | — | — |
| WORCESTER GREENSTAR 15I SYSTEM NG | 41-311-84 | 41-311-84 | — | — |
| WORCESTER GREENSTAR 18I SYSTEM LPG | 41-311-87 | 41-311-87 | — | — |
| WORCESTER GREENSTAR 18I SYSTEM NG | 41-311-86 | 41-311-86 | — | — |
| WORCESTER GREENSTAR 24I JUNIOR NG | 47-311-86 | 47-311-86 | — | — |
| WORCESTER GREENSTAR 24i JUNIOR LPG | 47-311-90 | 47-311-90 | — | — |
| WORCESTER GREENSTAR 24i SYSTEM LPG | 41-311-70 | 41-311-70 | — | — |
| WORCESTER GREENSTAR 24i SYSTEM NG | 41-311-68 | 41-311-68 | — | — |
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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 — GREENSTAR 12i SYSTEM LPG (GC 41-311-69), GREENSTAR 12i SYSTEM NG (GC 41-311-67), GREENSTAR 15I SYSTEM LPG (GC 41-406-26), GREENSTAR 15I SYSTEM NG (GC 41-311-84), GREENSTAR 18I SYSTEM LPG (GC 41-311-87), GREENSTAR 18I SYSTEM NG (GC 41-311-86), GREENSTAR 24i SYSTEM LPG (GC 41-311-70), GREENSTAR 24i SYSTEM NG (GC 41-311-68)
manualmanualWORCESTER appliance manual — GREENSTAR 24I JUNIOR NG (GC 47-311-86), GREENSTAR 24i JUNIOR LPG (GC 47-311-90), GREENSTAR 28i JUNIOR LPG (GC 47-311-91), GREENSTAR 28i JUNIOR NG (GC 47-311-87)
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