Low
F5 on Ferroli Domi Compact

Your boiler has detected a temporary issue with the air vent or exhaust system and is pausing itself to stay safe, but it should restart on its own once the condition clears.

Monitor it

This is a minor fault. Keep an eye on it and mention it at your next annual boiler service. Reset the boiler and see if it clears.

Technical description

Temporary shutdown that is automatically reset as soon as the value causing the fault comes back within the boiler’s normal working range

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 →

Related fault codes

Related guides you might find useful