What does the Ariston Pressure Gauge J < 0.5 bar fault code mean?

Your boiler has stopped working because the water pressure is too low for the system to circulate heat safely.

How much does it cost to fix Ariston error code Pressure Gauge J < 0.5 bar?

Typical repair cost for the Ariston Pressure Gauge J < 0.5 bar fault is £0-120 including labour.

Locate the filling loop (usually a silver braided hose with small valves underneath the boiler).

Your boiler has stopped working because the water pressure is too low for the system to circulate heat safely.

Typical repair cost for the Ariston Pressure Gauge J < 0.5 bar fault is £0-120 including labour.

Locate the filling loop (usually a silver braided hose with small valves underneath the boiler).

Shutdown Due To Insufficient Circulation. If the boiler is off, one possible cause for this state is an insufficient pressure of water in the system.

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