What does the Baxi 125 fault code mean?

Your boiler has stopped working because the water isn't moving through the system properly, which is causing it to overheat and shut down.

How much does it cost to fix Baxi error code 125?

Typical repair cost for the Baxi 125 fault is £180-450 including labour.

Check that your home's radiator valves are fully open

Water circulation fault

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.

Work through these before the call-out.