Worcester Bosch · Greenstar Si Compact ErP
CE 266 boiler fault code
Greenstar Si Compact ErP
What CE 266 means
No pressure variation detected after switching pump.
Gas Safe engineer: If pressure drops again, is not low, or the code remains, contact a Gas Safe registered engineer.
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.
Safe check
Check the pressure gauge. If it is below 1 bar, top up to about 1.5 bar using the filling loop as shown by the installer/user guide, without removing a panel or casing. Press Reset once only. If pressure drops again, is not low, or the code remains, contact a Gas Safe registered engineer.
When to contact an engineer
If pressure drops again, is not low, or the code remains, contact a Gas Safe registered engineer.
Source and provenance
- Greenstar Si Compact ErP Installation, Commissioning and Servicing Instructions 6 720 813 278 (2015/07) · §8.5 Information and service menus, Status codes, printed pp. 63–64
installation and service instructions
2015/07 · 6 720 813 278
After: Repressurise the boiler