Worcester Bosch
Worcester Bosch Printed Circuit Board Greenstar 8748300910
Printed circuit board for Worcester Bosch Greenstar CDi combi boilers, part 8748300910, GC number H99-778.
At a glance
- Part type: Printed circuit board
- Appliance family: Greenstar CDi combi
- Also known as 1030752
- This part is fitted to a gas appliance; installation must be carried out by a Gas Safe registered engineer.
Showing prices
£140.88
£117.40 ex. VAT · VAT at 20%
Available to order · 3 working days
Available to order · 3 working days
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 Worcester Bosch 8748300910 is a printed circuit board used in Greenstar CDi combi boilers. It is the main control board, handling ignition sequencing, fan and pump operation, temperature regulation and communication with the boiler's controls and sensors. The board is listed under Worcester Bosch part number 8748300910 and carries GC number H99-778.
Signs this part needs replacing
- Boiler does not fire when a heating or hot water demand is called
- Blank or unlit display, or no power reaching the control panel
- Repeated lockouts or fault codes that clear only temporarily
- Fan, pump or ignition sequence fails to start
- Intermittent or erratic running of heating and hot water
Before you order
- Check the GC number and rating plate on the appliance to confirm the board matches your model
- Compare the numbers printed on the existing board against 8748300910 and the previous numbers listed above
- 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 CDi combi |
Compliance
| Manufacturer part number (MPN) | 8748300910 |
|---|---|
| GC number | H99-778 |
| Barcode / EAN | 8748300910 |
| Commodity code | 8537 10 99 00 |
| GPC classification | Household Boilers/Furnaces/Tank Water Heaters Replacement Parts/Accessories |
| Alternative numbers | 8-748-300-698-0, 87483008270, 1030752 |
| Previous numbers | 8-748-300-698-0, 87483006980, 87483008270 |
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| WORCESTER GREENSTAR 27CDI EMS COMBI LPG | 47-406-13 | 47-406-13 | — | — |
| WORCESTER GREENSTAR 27CDI EMS COMBI NG | 47-406-12 | 47-406-12 | — | — |
| WORCESTER GREENSTAR 29CDI CLASSIC COMBI LPG | 47-406-35 | 47-406-35 | — | — |
| WORCESTER GREENSTAR 29CDI CLASSIC COMBI NG | 47-406-34 | 47-406-34 | — | — |
| WORCESTER GREENSTAR 29CDI ErP CLASSIC LPG | 47-406-66 | 47-406-66 | — | — |
| WORCESTER GREENSTAR 29CDI ErP CLASSIC NG | 47-406-65 | 47-406-65 | — | — |
| 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 NEW EMS LPG | 47-311-97 | 47-311-97 | — | — |
| WORCESTER GREENSTAR 30CDI NEW EMS NG | 47-311-93 | 47-311-93 | — | — |
Showing 10 of 40 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
WORCESTER appliance manual — GREENSTAR 27CDI EMS COMBI LPG (GC 47-406-13), GREENSTAR 27CDI EMS COMBI NG (GC 47-406-12), GREENSTAR 37CDI EMS COMBI LPG (GC 47-406-09), GREENSTAR 37CDI EMS COMBI NG (GC 47-406-08), GREENSTAR 42CDI CLASSIC COMBI LPG (GC 47-406-11), GREENSTAR 42CDI CLASSIC COMBI NG (GC 47-406-10)
manualmanualWORCESTER appliance manual — GREENSTAR 29CDI CLASSIC COMBI LPG (GC 47-406-35), GREENSTAR 29CDI CLASSIC COMBI NG (GC 47-406-34), GREENSTAR 34CDI CLASSIC COMBI LPG (GC 47-406-37), GREENSTAR 34CDI CLASSIC COMBI NG (GC 47-406-36), GREENSTAR 38CDI CLASSIC COMBI LPG (GC 47-406-39), GREENSTAR 38CDI CLASSIC COMBI NG (GC 47-406-38)
manualmanualWORCESTER appliance manual — GREENSTAR 29CDI ErP CLASSIC LPG (GC 47-406-66), GREENSTAR 29CDI ErP CLASSIC NG (GC 47-406-65), GREENSTAR 34CDI ErP CLASSIC LPG (GC 47-406-68), GREENSTAR 34CDI ErP CLASSIC NG (GC 47-406-67), GREENSTAR 38CDI ErP CLASSIC LPG (GC 47-406-70), GREENSTAR 38CDI ErP CLASSIC NG (GC 47-406-69), GREENSTAR 42CDI ErP CLASSIC LPG (GC 47-406-72), GREENSTAR 42CDI ErP CLASSIC NG (GC 47-406-71)
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 NEW EMS LPG (GC 47-311-97), GREENSTAR 30CDI NEW EMS NG (GC 47-311-93)
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)
manualNo technical questions yet for this part.
Not sure which part?
Search by part number, product name or brand — our technical team confirms fitment before anything is dispatched.