Worcester Bosch · Greenstar i System Compact ErP
CE 266 boiler fault code
Greenstar 27i / 30i System Compact ErP
What CE 266 means
No pressure variation detected after switching pump.
Gas Safe engineer: If the gauge is not below 1 bar, pressure drops again, 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 reads below 1 bar, top up to about 1.5 bar using the filling loop shown by your installer and the user guide. Do not remove any panel or casing. Press Reset once only. If the gauge is not below 1 bar, pressure drops again, or the code remains, contact a Gas Safe registered engineer.
When to contact an engineer
If the gauge is not below 1 bar, pressure drops again, or the code remains, contact a Gas Safe registered engineer.
Source and provenance
- Greenstar i System Compact ErP Installation, Commissioning and Servicing Instructions 6 720 813 280 (2015/07) · §8.4 Information and service menus, Status codes, printed pp.63–64; §8.5 Fault codes (Maintenance codes + Table 35 Locking fault and cause code listing), printed p.70
installation and service instructions
2015/07 · 6 720 813 280
After: Repressurise the boiler