What does the Ferroli A01 fault code mean?

Your boiler has failed to light, which means you currently have no heating or hot water because the system cannot create a flame.

How much does it cost to fix Ferroli error code A01?

Typical repair cost for the Ferroli A01 fault is £90-280 including labour.

Check that your gas supply is turned on and that other gas appliances in your home are working.

Ignition error – possible electrode fault or power too low, no gas or excessive condensate level

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.

Lockout fault with a reset-needed pattern.

Older boilers — thermocouple, draught, gas supply.