What does the Potterton Circulation LOCKOUT fault code mean?

Your boiler has detected that hot water isn't moving around your radiators or pipes properly and has shut itself down to prevent overheating.

How much does it cost to fix Potterton error code Circulation LOCKOUT?

Typical repair cost for the Potterton Circulation LOCKOUT fault is £150-350 including labour.

Inadequate circulation checked by casting thermistor; trips 4 times during a call for heat.

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

Almost always a stuck diverter valve on combis.

Each noise points to a different fault.

Lockout fault with a reset-needed pattern.