Neon6 High

Glow-worm Neon6 Fault Code

Also written as NEON6 — same fault.

The Glow-worm Neon6 fault code means: your boiler has stopped working because it failed to light or stay lit when it was supposed to.. It appears on 11 Glow-worm 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: Flame failure has occurred. Reset boiler by turning temperature control to 0 (off), wait 30 seconds, then repeat the lighting instructions.

What causes the Glow-worm Neon6 fault?

This fault occurs when the boiler's internal safety system cannot detect a flame after several attempts to ignite. The root cause is usually a lack of fuel reaching the burner, a worn-out ignition spark, or a sensor that has become too dirty to 'see' the flame even if it is actually lit.

This issue is more frequent during the first cold snap of winter when components that have sat idle all summer are suddenly forced to operate under high demand.

Typical repair cost £120-280 (including labour)

DIY fix possible

Turn the temperature control knob to the 'Off' positionWait for at least 30 seconds for the unit to resetTurn the temperature control knob back to your desired settingEnsure there is gas reaching the property (check other gas appliances)

Find a Gas Safe engineer

Search the official register for a qualified engineer in your area.

Gas Safe Register →
Boiler cover options

Avoid the next call-out bill

A cover plan would handle faults like Neon6: no call-out fees, no surprise bills.

Approved partner
Domestic Appliance Guard
Unlimited call-outs, 24/7 helpline, no price-hike promise
Get a quote →

Affiliate links. We may earn a commission at no extra cost to you.

Glow-worm models that show the Neon6 fault code

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

Source

Glow-worm Neon6 fault code information on this page is sourced and cross-checked against the official Glow-worm service / installation manuals for each affected model.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 7 July 2026