Worcester Bosch
Worcester Bosch Code Plug 1131 Low NOx 87144311310
Code plug 1131 for Worcester Bosch Greenstar 28I Junior boilers, used with the low NOx option after FD 988.
At a glance
- Also known as 1030133
£17.48
£14.57 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 code plug 1131 is a configuration component for Greenstar 28I Junior gas boilers. It sets the appliance electronics for the low NOx option on natural gas models after FD 988. The plug carries part number 87144311310.
Signs this part needs replacing
- Boiler fails to fire or locks out repeatedly
- Combustion readings fall outside the expected range for the low NOx setting
- Fault code indicates a configuration or code plug error
- Boiler runs with incorrect gas settings or poor flame stability
Before you order
- Confirm the boiler model is a Greenstar 28I Junior
- Check the fuel type: this code plug is for natural gas (NG)
- Verify the boiler's FD number is after 988
- Check the existing code plug number before ordering
Compliance
| GC number | H90-698 |
|---|---|
| Barcode / EAN | 4047416629643 |
| Alternative numbers | 1030133 |
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| WORCESTER GREENSTAR 28i JUNIOR LPG | 47-311-91 | 47-311-91 | — | — |
| WORCESTER GREENSTAR 28i JUNIOR NG | 47-311-87 | 47-311-87 | — | — |
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.
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