What does the Ideal -. / A fault code mean?

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

How much does it cost to fix Ideal error code -. / A?

Typical repair cost for the Ideal -. / A fault is £150-300 including labour.

The central heating installation is overheated; the hot water tank is not heated.

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

Almost always a stuck diverter valve on combis.

Each noise points to a different fault.

Safety-critical — turn off, read this.