What does the Biasi E01 fault code mean?

Your boiler has failed to ignite, which means it cannot provide heat or hot water and requires a safety reset.

How much does it cost to fix Biasi error code E01?

Typical repair cost for the Biasi E01 fault is £90-250 including labour.

Check if your gas supply is turned on and other gas appliances are working

Injectors for LPG (mod.M96.24SM/...)

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.

Almost always a stuck diverter valve on combis.

Older boilers — thermocouple, draught, gas supply.