What does the Alpha 31 fault code mean?

Your boiler has lost its connection to its wall controller or thermostat, meaning it cannot receive signals to turn on your heating or hot water.

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

Typical repair cost for the Alpha 31 fault is £90-180 including labour.

Check the batteries in your remote thermostat unit and replace them if necessary

Remote control communication lost

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.

Work through these before the call-out.

Safety-critical — turn off, read this.