Vokèra · Vision Plus Combi

E099 boiler fault code

Vision Plus 25C/30C

What E099 means

Reset attempts exhausted, boiler blocked (definitive, not resettable)

Find a Gas Safe engineer

A boiler fault code alone is not a gas or carbon-monoxide emergency. If you smell gas, a CO alarm sounds, or someone has possible carbon-monoxide symptoms, leave and call 0800 111 999 from outside.

Safe check: Note the code shown on the display. Do not open, adjust or repeatedly reset the boiler. Contact a Gas Safe registered engineer.

Gas Safe registered engineer: The code remains or returns after the step above, or no home step applies; arrange diagnosis by a Gas Safe registered engineer.

Official source: Vokèra Vision Plus Combi (25C/30C) Users Instructions · §2.5a Boiler fault codes, E099, printed p.8 (also §8.14 p.42)