Worcester Bosch
Worcester Bosch Soft Start 25A 8738204486
25A soft start unit for Worcester Greensource air/water heat pumps, part number 8738204486.
At a glance
- Also known as 1030623
£550.96
£459.13 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 soft start 25A is a starting control component used on Worcester Greensource air/water heat pumps. It manages the current drawn when the compressor starts, limiting the initial surge on the supply. It is identified by Worcester Bosch part number 8738204486.
Signs this part needs replacing
- The compressor hums on start-up but does not run
- The circuit breaker or RCD trips repeatedly when the heat pump starts
- The heat pump locks out or fails to run at the point of start-up
- Clicking from the soft start area with no subsequent compressor start
- Localised overheating, discolouration or a burning smell around the unit
Before you order
- Confirm your appliance is one of the Greensource models listed above
- Check the part number on the existing soft start unit matches 8738204486
- Confirm the 25 A rating matches the component being replaced
- Inspect the associated wiring and connections for damage before fitting
Compliance
| Barcode / EAN | 4051516783709 |
|---|---|
| Alternative numbers | 1030623 |
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| WORCESTER GREENSOURCE 6KW AIR/WATER HEATPUMP | — | — | — | |
| WORCESTER GREENSOURCE 7KW AIR/WATER HEATPUMP | — | — | — | |
| WORCESTER GREENSOURCE 9.5KW AIR/WATER HEATPUMP | — | — | — |
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 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.