What does the Grant Lock-out fault code mean?

Your boiler has stopped working because it failed to start the heating process, triggering a safety system that keeps the burner turned off.

How much does it cost to fix Grant error code Lock-out?

Typical repair cost for the Grant Lock-out fault is £150-350 including labour.

Burner does not light and the 'Lock-out' reset button lights.

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.

Safety-critical — turn off, read this.

7 signs repair isn't worth it anymore.