What does the Biasi 50 fault code mean?

Your boiler is having trouble talking to its smart thermostat or external controller, meaning it may not receive instructions to turn the heating on.

How much does it cost to fix Biasi error code 50?

Typical repair cost for the Biasi 50 fault is £90-250 including labour.

Check that your room thermostat or smart controller is powered on and has working batteries.

OT communication 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.

Work through these before the call-out.

Safety-critical — turn off, read this.

7 signs repair isn't worth it anymore.