Worcester Bosch · Greenstar 8000 Life Combi
258 boiler fault code
Greenstar 8000 Life Combi (GR8300iW 30 C / 35 C / 40 C / 45 C / 50 C)
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What 258 means
The official Greenstar 8000 Life Combi manual includes code 258 in its fault code table on printed page 76. The manufacturer table linked below gives the display text and fault category.
Safe check
Make a note of the displayed code. Do not remove the boiler casing or inspect internal gas, electrical or combustion components.
When to contact an engineer
Use only the homeowner action in your product guide. If this fault or maintenance message remains or returns, contact Worcester Bosch or a Gas Safe registered engineer.
Safety notice
A boiler fault code alone is not a gas or carbon-monoxide emergency. If you smell gas, a CO alarm sounds, anyone feels unwell, or there is an unsafe flame, leave and call 0800 111 999 from outside.
Source and provenance
- Greenstar 8000 Life Combi Installation and Maintenance Instructions · 6720883865 · §10.1.2 Fault code table, code 258, printed p. 76
installation and maintenance instructions
2021/11 · appliances manufactured from 12/11/2021 onwards