Glow-worm · Ultracom2 cxi 24/30/35

F49 boiler fault code

Ultracom2 cxi 24/30/35

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What F49 means

EBUS voltage fault (EBUS line / connector short).

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

Source and provenance