What does the Alpha 31 fault code mean?

Your boiler has lost its digital connection to your room thermostat, meaning it no longer knows when to turn your heating on or off.

How much does it cost to fix Alpha error code 31?

Typical repair cost for the Alpha 31 fault is £120-250 including labour.

Loss of communication with external control (Alpha Climatic) - Loss of connection between the boiler and Alpha Climatic control unit

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

Work through these before the call-out.

Safety-critical — turn off, read this.

7 signs repair isn't worth it anymore.