Worcester Bosch
Worcester Bosch Control Unit MHP-27 8716122561
Worcester Bosch MHP-27 control unit PCB for Greenstar 4000 GR4700iW combi and system boilers.
At a glance
- Also known as 2248747
£350.98
£292.48 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 CONTROL UNIT MHP-27 is a printed circuit board control unit manufactured by Worcester Bosch. It manages the operating sequence and electronic control functions on Greenstar 4000 GR4700iW appliances. The board is listed for both combi and system variants of the GR4700iW range.
Signs this part needs replacing
- The boiler fails to start or shows no response at the control panel
- Repeated lockouts or fault codes that clear only temporarily
- No display or intermittent display on the appliance interface
- Fan, pump or ignition sequence not being initiated by the board
- Errors that persist after checking wiring and connections to the board
Before you order
- Confirm the appliance model and GC number against the fit list above
- Check the existing board's part number matches 8716122561
- Verify whether the boiler is the combi or system variant, and NG or LPG
- Inspect wiring, fuses and connectors before concluding the board has failed
Compliance
| Alternative numbers | 2248747 |
|---|
| 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
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.
No documents held for this part. The technical team will source them from the manufacturer — usually the same working day.
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