Worcester Bosch
Worcester Bosch Code Plug NG 21kW 8737708829
Natural gas code plug for the Worcester Greenstar 21RI ErP+ NG, part number 8737708829.
At a glance
- Also known as 2248329
Showing prices
£9.89
£8.24 ex. VAT · VAT at 20%
Available to order · 7 working days
Available to order · 7 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 code plug (part 8737708829) is a configuration component used on Worcester Greenstar appliances. It sets the appliance for natural gas (NG) operation at 21 kW. It is fitted to the Greenstar 21RI ErP+ NG.
Signs this part needs replacing
- Boiler fails to fire or locks out after a PCB or control board change
- Configuration or parameter fault codes appear on the appliance
- Appliance does not run at the expected gas type or output setting
- Code plug is missing, damaged, or has loose or corroded pins
Before you order
- Confirm the appliance model is the Greenstar 21RI ErP+ NG
- Check the existing code plug part number matches 8737708829
- Verify the gas type is natural gas (NG) and the output is 21 kW
- Check the appliance data badge against the fitment listed
Compliance
| Alternative numbers | 2248329 |
|---|
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| WORCESTER GREENSTAR 21Ri ErP+ NG | 41-406-78 | 41-406-78 | — | — |
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.
No technical questions yet for this part.
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