F018
FAULT CODE
Intergas
Flue or Air Supply Blocked (Xtreme/Xclusive)
High Severity
DIY Check Possible
On Intergas Xtreme/Xclusive, F018 indicates the flue and/or air supply duct is blocked. Check for obstructions at the flue terminal.
Cold Weather Note
In cold weather, check for ice forming at the flue terminal.
Step-by-Step Fix Guide
-
Step 1
Check the external flue terminal for debris, ice, or bird nests
-
Step 2
If the terminal is clear, call a Gas Safe engineer to inspect the internal flue 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.