What does the Baxi 25 fault code mean?

Your boiler has detected that it is running too hot and has automatically shut itself down to prevent damage or dangerous overheating.

How much does it cost to fix Baxi error code 25?

Typical repair cost for the Baxi 25 fault is £150-300 including labour.

Safety Thermostat Activated (Boiler or Flue)

This is a emergency 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.

Almost always a stuck diverter valve on combis.

Work through these before the call-out.