What does the Ariston 118 fault code mean?

Your boiler has detected that the water pressure is too high, often caused by the filling loop being left open or a fault in the expansion system.

How much does it cost to fix Ariston error code 118?

Typical repair cost for the Ariston 118 fault is £80-220 including labour.

Check that the filling loop valves are tightly closed

All Boilers

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.

Step-by-step using the filling loop.

7 signs repair isn't worth it anymore.