What does the Ariston 407 fault code mean?

Your boiler has lost its connection to the room thermostat, meaning it cannot receive the signal to turn your heating on or off.

How much does it cost to fix Ariston error code 407?

Typical repair cost for the Ariston 407 fault is £0-120 including labour.

Check the batteries in your room thermostat and replace them if they are low.

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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.