What does the Ariston 1 09 fault code mean?

Your boiler has detected that the water pressure inside your heating system is too high, which can put unnecessary strain on the internal components.

How much does it cost to fix Ariston error code 1 09?

Typical repair cost for the Ariston 1 09 fault is £80-150 including labour.

Locate a radiator in your home with a bleed valve.

System pressure > 3 bar

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.

Safety-critical — turn off, read this.

7 signs repair isn't worth it anymore.