What does the Ferroli E01 fault code mean?

Your boiler is unable to light the flame needed to heat your water or radiators, resulting in the system shutting down for safety.

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

Typical repair cost for the Ferroli E01 fault is £100-350 including labour.

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

Ignition failure - burner does not ignite

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.

Sludge build-up — needs flushing, not bleeding.