What does the Biasi Er 02 fault code mean?

Your boiler has switched itself off because it has detected that the water inside has become or is becoming too hot.

How much does it cost to fix Biasi error code Er 02?

Typical repair cost for the Biasi Er 02 fault is £100-280 including labour.

Ensure all radiator valves are fully open to allow water to circulate

Safety thermostat intervention lockout

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.