What does the Worcester Bosch A8 fault code mean?

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

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

Typical repair cost for the Worcester Bosch A8 fault is £90-250 including labour.

Check if your wireless thermostat has run out of batteries and replace them if necessary.

Break communication to FX sensor controls electrical connections need checking.

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.