What does the Saunier Duval Neon 2 NOT lit fault code mean?

Your boiler has automatically turned itself off because it detected that it may be getting too hot, likely to protect the system from damage.

How much does it cost to fix Saunier Duval error code Neon 2 NOT lit?

Typical repair cost for the Saunier Duval Neon 2 NOT lit fault is £120-250 including labour.

Overheat cut off device tripped or thermostat, overheat cut off device faulty

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

Each noise points to a different fault.

Work through these before the call-out.

Lockout fault with a reset-needed pattern.