BoilerFaultCodesWorcester Bosch 265 Fault Code
The Worcester Bosch 265 fault code means: your boiler is temporarily turning itself off because your radiators or taps aren't taking away the heat as fast as the boiler is producing it, often due to poor water flow.. It appears on 12 Worcester Bosch models in our database.
Technical description: Heat demand lower than energy supplied
What causes the Worcester Bosch 265 fault?
Energy imbalance
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
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Worcester Bosch models that show the 265 fault code
Click a model for the full fault code list and model-specific repair notes.
- 24 RSF Repair: £0-120
- 24i / 28i Junior Repair: £0-120
- Greenstar 1000 Repair: £120-250
- Greenstar 12i System
- Greenstar 30i Repair: £80-250
- Greenstar 4000 Repair: £120-250
- Greenstar 8000 F
- Greenstar 8000+
- Greenstar 8000+ Style
- Greenstar CDi Compact Repair: £120-250
- Greenstar i
- Hideaway 90 Repair: £0-120
Source
Worcester Bosch 265 fault code information on this page is sourced and cross-checked against the official Worcester Bosch service / installation manuals for each affected model.
- Worcester Bosch 24 RSF manual (PDF)
- Worcester Bosch 24i / 28i Junior manual (PDF)
- Worcester Bosch Greenstar 1000 manual (PDF)
Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 31 August 2026