What does the Glow-worm Neon 3 not lit fault code mean?

Your boiler has stopped working because it cannot confirm that the internal fan is safely clearing waste gases from the system.

How much does it cost to fix Glow-worm error code Neon 3 not lit?

Typical repair cost for the Glow-worm Neon 3 not lit fault is £120-£280 including labour.

Manufacturer manual

Air flow proving fault - that is fan or air pressure switch

Shared across the Glow-worm Micron 100FF 120FF range

This code is shared by the boilers in this range, which use the same control board. It may not be printed in this exact variant’s manual.

This is a high severity fault. Stop using the boiler and call a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

Boiler cover options

A cover plan would handle faults like Neon 3 not lit: no call-out fees, no surprise bills.

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Seeing a different code? Every code this model can display, in one place.

Each noise points to a different fault.

7 signs repair isn't worth it anymore.

Break-even maths on monthly cover.