What does the Baxi Lights: On, Flash, Flash fault code mean?

Your boiler has detected that it is heating up internally without enough water flowing through it, causing it to shut down to prevent damage.

How much does it cost to fix Baxi error code Lights: On, Flash, Flash?

Typical repair cost for the Baxi Lights: On, Flash, Flash fault is £120-350 including labour.

Go to Dry-Fire section of the fault finding instructions.

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

Each noise points to a different fault.

Work through these before the call-out.

Lockout fault with a reset-needed pattern.