What does the Baxi 23 fault code mean?

Your boiler has failed to light or maintain a flame, meaning it cannot heat your water or radiators for safety reasons.

How much does it cost to fix Baxi error code 23?

Typical repair cost for the Baxi 23 fault is £120-350 including labour.

Check if other gas appliances in your home, such as a hob, are working to ensure gas supply exists

Flame Failure

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.

Older boilers — thermocouple, draught, gas supply.

Sludge build-up — needs flushing, not bleeding.