What does the Baxi H.01 – .08 fault code mean?

Your boiler is struggling to move water around the system properly, causing it to heat up much faster than it should and shut down for safety.

How much does it cost to fix Baxi error code H.01 – .08?

Typical repair cost for the Baxi H.01 – .08 fault is £120-300 including labour.

Check that all radiator valves are fully open

Sensor fault, flow temperature increasing too fast in heating mode or insufficient circulation.

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.

Sludge build-up — needs flushing, not bleeding.