What does the Biasi 1 + fault code mean?

Your boiler has tried to light several times but failed, so it has locked itself for safety.

How much does it cost to fix Biasi error code 1 +?

Typical repair cost for the Biasi 1 + fault is £100-£280 including labour.

Check if other gas appliances (like a hob) are working to ensure gas supply is on

Safety lockout due to failed ignition.

This is a high severity fault. Stop using the boiler and call a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

Lockout fault with a reset-needed pattern.

Older boilers — thermocouple, draught, gas supply.

7 signs repair isn't worth it anymore.