Alpha · E-Tec 28/33
20 boiler fault code
E-Tec 28/33
What 20 means
Flame sensing fault: false flame detection, flame detected but gas valve is not open
Emergency guidance
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.
Open the emergency safety guideWhen to contact an engineer
Your boiler has shut down for safety. Don't keep resetting it. Leave it off and get a Gas Safe engineer to check it.
Renting? Report it to your landlord or housing provider first. They are responsible for gas safety and boiler repairs, and the repair should not cost you.
Source and provenance
- Alpha E-Tec 28 and 33 Installation and Servicing Instructions · §10.2 p. 47
installation and servicing instructions
Jan 22