F2
FAULT CODE
Ideal
Flame Loss
Medium Severity
DIY Check Possible
The boiler has lost its flame during operation or failed to ignite.
Cold Weather Note
F2 in winter is usually a frozen condensate pipe. Thaw and reset.
Step-by-Step Fix Guide
-
Step 1
Check other gas appliances are working
-
Step 2
Check for a frozen condensate pipe in cold weather and thaw with warm water
-
Step 3
Try a single reset using the restart button
-
Step 4
If the fault persists, a Gas Safe engineer should check the gas valve and ignition system
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.