What does the Ariston L.E.D. B fault code mean?

Your boiler has failed to light the flame properly and has safely shut itself down to prevent a build-up of unburnt gas.

How much does it cost to fix Ariston error code L.E.D. B?

Typical repair cost for the Ariston L.E.D. B fault is £120-250 including labour.

Ignition failure / Ignition Lockout. Signals 7 seconds after a lighting failure.

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

Lockout fault with a reset-needed pattern.

Older boilers — thermocouple, draught, gas supply.

7 signs repair isn't worth it anymore.