Worcester Bosch
Worcester Bosch Control Unit ACU MHP-20 8737714735
Control unit ACU MHP-20 for Worcester Bosch Greenstar 8000+ and Condens 7000 series boilers, part number 8737714735.
At a glance
- Also known as 2249465
£265.00
£220.83 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 ACU MHP-20 is a Worcester Bosch control unit, part number 8737714735. It is used on Greenstar 8000+ and Greenstar Condens 7000 series boilers. The unit forms part of the boiler's control system.
Signs this part needs replacing
- Boiler does not respond to heating or hot water demand
- Control unit display is blank or shows persistent fault codes
- Buttons or dials on the control unit are unresponsive
- Boiler locks out repeatedly with control-related fault codes
- Intermittent boiler operation that cannot be traced to another component
Before you order
- Confirm your boiler model appears in the Fits list above
- Check that the existing control unit is marked ACU MHP-20
- Verify part number 8737714735 against the manufacturer's parts list
- Isolate the boiler from the electrical supply before fitting
Compliance
| Alternative numbers | 2249465 |
|---|
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| WORCESTER GREENSTAR 8000+ STYLE COMBI GR8701iW 32 C NG | 47-800-44 | 47-800-44 | — | — |
| WORCESTER GREENSTAR 8000+ STYLE COMBI GR8701iW 32 CB NG | 47-800-49 | 47-800-49 | — | — |
| WORCESTER GREENSTAR 8000+ STYLE COMBI GR8701iW 36 C NG | 47-800-45 | 47-800-45 | — | — |
| WORCESTER GREENSTAR 8000+ STYLE COMBI GR8701iW 36 CB NG | 47-800-50 | 47-800-50 | — | — |
| WORCESTER GREENSTAR 8000+ STYLE COMBI GR8701iW 40 C NG | 47-800-46 | 47-800-46 | — | — |
| WORCESTER GREENSTAR 8000+ STYLE COMBI GR8701iW 45 C NG | 47-800-47 | 47-800-47 | — | — |
| WORCESTER GREENSTAR 8000+ STYLE COMBI GR8701iW 50 C NG | 47-800-48 | 47-800-48 | — | — |
| WORCESTER GREENSTAR 8000+ STYLE REGULAR GR8701iW 30 R NG | 41-800-29 | 41-800-29 | — | — |
| WORCESTER GREENSTAR 8000+ STYLE REGULAR GR8701iW 35 R NG | 41-800-30 | 41-800-30 | — | — |
| WORCESTER GREENSTAR 8000+ STYLE REGULAR GR8701iW 40 R NG | 41-800-31 | 41-800-31 | — | — |
Showing 10 of 40 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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