What does the Ravenheat E31 fault code mean?

Your boiler is having trouble talking to your smart thermostat or external controls, meaning they cannot tell the boiler when to turn on or off.

How much does it cost to fix Ravenheat error code E31?

Typical repair cost for the Ravenheat E31 fault is £80-220 including labour.

Check that your smart thermostat or wall controller is powered on and has working batteries.

OpenTherm communication error

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.