What does the Halstead 0011 fault code mean?

Your boiler has tried to light the flame five times but failed, so it has safely shut itself down to prevent a build-up of unburnt gas.

How much does it cost to fix Halstead error code 0011?

Typical repair cost for the Halstead 0011 fault is £120-250 including labour.

Ignition lockout - failure during an ignition sequence (5 attempts)

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.