What does the Ariston A01 fault code mean?

Your boiler has failed to light because it cannot detect a steady gas supply, so it has safely shut down to prevent gas from leaking into your home.

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

Typical repair cost for the Ariston A01 fault is £120-250 including labour.

Electronic system shutdown because the supply of gas has been cut off (after third attempt to ignite the burner).

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

Six most common causes of dropping pressure.

Lockout fault with a reset-needed pattern.

Older boilers — thermocouple, draught, gas supply.