A02
FAULT CODE
Ferroli
Flame Loss During Operation
Medium Severity
DIY Check Possible
The boiler ignited but then lost its flame during normal operation. Common causes include gas pressure fluctuations, flue draught issues, or a frozen condensate pipe in winter.
Cold Weather Note
A02 in winter is very often a frozen condensate pipe. Thaw before calling an engineer.
Step-by-Step Fix Guide
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Step 1
Check for a frozen condensate pipe in cold weather and thaw with warm water
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Step 2
Reset the boiler once
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Step 3
If fault returns in warmer weather, call a Gas Safe engineer to check gas pressure and the gas valve
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.