What does the Johnson Starley OVERHEAT LOCKOUT fault code mean?

Your boiler has switched itself off because it became too hot, acting as a safety measure to protect the internal components.

How much does it cost to fix Johnson Starley error code OVERHEAT LOCKOUT?

Typical repair cost for the Johnson Starley OVERHEAT LOCKOUT fault is £120-280 including labour.

Wait at least 15 minutes for the unit to cool down completely.

Should a fault occur, the heater will shut down and these blocking codes will be displayed.

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.