No lights High

Baxi No lights Fault Code

Also written as NOLIGHTS — same fault.

The Baxi No lights fault code means: your boiler has no electricity reaching it or an internal component has failed, causing the unit to stop working completely.. It appears on 2 Baxi models in our database.

Call an engineer soon

Book a Gas Safe engineer within 24 to 48 hours. Your boiler may be unsafe or could break down completely if left.

Technical description: No power
Typical repair cost £60-£180 (including labour)

DIY fix possible

Check if your home's main fuse box has a tripped circuit or a blown fuse.Verify that the boiler's power switch on the wall or fused spur is switched 'ON'.Replace the fuse in the boiler's wall-mounted power socket with a new 3-amp fuse.

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Baxi models that show the No lights fault code

Click a model for the full fault code list and model-specific repair notes.

Source

Baxi No lights fault code information on this page is sourced and cross-checked against the official Baxi service / installation manuals for each affected model.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 27 April 2026