What does the Firebird lock-out fault code mean?

Your boiler's burner has shut itself down because it is struggling to draw fuel, likely due to air or debris blocking the internal pump.

How much does it cost to fix Firebird error code lock-out?

Typical repair cost for the Firebird lock-out fault is £120-280 including labour.

Locate the red reset button on the burner control box

Manufacturer manual

Burner lock-out activates, suggests air in the pump or grit and dirt being forced into the burner pump, resulting in pump blockage or damage.

From this model's manual

Verified against the Firebird Popular Heatpac installation & service manual.

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

Boiler cover options

A cover plan would handle faults like lock-out: no call-out fees, no surprise bills.

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Each noise points to a different fault.

7 signs repair isn't worth it anymore.

Break-even maths on monthly cover.