What does the Ideal Overheat lockout fault code mean?

Your boiler has switched itself off because it became too hot, often because water isn't moving through the system properly.

How much does it cost to fix Ideal error code Overheat lockout?

Typical repair cost for the Ideal Overheat lockout fault is £120-350 including labour.

Check that all radiator valves and boiler service valves are fully open

Bleed radiators, refill system to 1.0 bar, check that radiator and boiler valves are open and reset boiler. If fault continues call an Engineer

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.