What does the Worcester Bosch A8 fault code mean?

Your boiler has lost its connection to your thermostat or remote heating controller, meaning it cannot receive instructions to turn the heating on.

How much does it cost to fix Worcester Bosch error code A8?

Typical repair cost for the Worcester Bosch A8 fault is £0-180 including labour.

Check and replace the batteries in your room thermostat or remote control unit.

Break in communication to FX/Sense controls.

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.