What does the Worcester Bosch 9 flashes fault code mean?

Your boiler's internal computer has encountered a critical communication error and can no longer control the heating process safely.

How much does it cost to fix Worcester Bosch error code 9 flashes?

Typical repair cost for the Worcester Bosch 9 flashes fault is £280-450 including labour.

Internal error. Check electrical connector contacts, programmer interface module ignition leads are not loose; replace pcb if necessary.

This is a high severity fault. Stop using the boiler and call a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

Lockout fault with a reset-needed pattern.

Safety-critical — turn off, read this.

7 signs repair isn't worth it anymore.