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L3 FAULT CODE
Firebird

Overheat Lockout

High Severity Engineer Required

The boiler has exceeded its safe temperature and locked out.

Step-by-Step Fix Guide

  1. Step 1

    Allow the boiler to cool

  2. Step 2

    Check system pressure and circulation

  3. Step 3 Engineer only

    Call an engineer if the fault recurs

Gas Safe Reminder

Work on gas appliances must be carried out by a Gas Safe registered engineer. The steps above cover safe checks a homeowner can perform - any internal component replacement requires a qualified professional. If in doubt, always call an engineer.

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