Glow-worm · Energy

F.49 boiler fault code

Energy

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What F.49 means

eBUS fault: Voltage too low.

Gas Safe engineer: Contact a Gas Safe registered engineer for diagnosis of this fault.

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 displayed code. Do not open, adjust or repeatedly reset the boiler. Contact a Gas Safe registered engineer.

When to contact an engineer

Contact a Gas Safe registered engineer for diagnosis of this fault.

Source and provenance