What does the Ariston 40-70 (ll-ll) fault code mean?

Your boiler is struggling to stay lit and has failed to restart after several attempts to create a steady flame.

How much does it cost to fix Ariston error code 40-70 (ll-ll)?

Typical repair cost for the Ariston 40-70 (ll-ll) fault is £120-250 including labour.

Re-ignition attempt

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.