BoilerFaultCodesWorcester Bosch EA (261) Fault Code
Also written as EA261 — same fault.
The Worcester Bosch EA (261) fault code means: your boiler's internal electronic control center is having trouble communicating with the system, preventing the boiler from starting up safely.. It appears on 12 Worcester Bosch models in our database.
Technical description: HCM potentially defective
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
Find a Gas Safe engineer
Search the official register for a qualified engineer in your area.
Gas Safe Register →Worcester Bosch models that show the EA (261) fault code
Click a model for the full fault code list and model-specific repair notes.
- 24 RSF Repair: £280-450
- 26 CDi Xtra Repair: £180-350
- 30i Junior Repair: £280-450
- 35 RSF Repair: £180-350
- Danesmoor Repair: £280-450
- Greenstar 12i System Repair: £150-300
- Greenstar 12i System Repair: £250-450
- Greenstar i Repair: £250-450
- Heatslave Repair: £280-450
- Hideaway Repair: £250-450
- Junior 24i Repair: £180-450
- Junior 28i Repair: £280-450
Source
Worcester Bosch EA (261) fault code information on this page is sourced and cross-checked against the official Worcester Bosch service / installation manuals for each affected model.
Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 27 April 2026