What does the Ariston L.E.D. I (Red) fault code mean?

Your boiler has detected that the water inside has become dangerously hot and has automatically shut itself down to prevent damage.

How much does it cost to fix Ariston error code L.E.D. I (Red)?

Typical repair cost for the Ariston L.E.D. I (Red) fault is £120-250 including labour.

OVERHEATING: This control shuts off the boiler in the case where the primary circuit reaches a temperature in excess of 105°C.

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

Each noise points to a different fault.

Sludge build-up — needs flushing, not bleeding.

Safety-critical — turn off, read this.