BoilerFaultCodesIdeal F 03 Fault Code
Also written as F03 — same fault.
The Ideal F 03 fault code means: your boiler has detected that the internal fan is not working correctly, which prevents it from safely venting gases, so it has shut down to protect your home.. It appears on 4 Ideal models in our database.
Technical description: Fan Fault
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
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Ideal models that show the F 03 fault code
Click a model for the full fault code list and model-specific repair notes.
Source
Ideal F 03 fault code information on this page is sourced and cross-checked against the official Ideal service / installation manuals for each affected model.
- Ideal i-mini2 C24 manual (PDF)
- Ideal Independent System2 S15 manual (PDF)
- Ideal Logic Max Combi 2 manual (PDF)
Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 7 July 2026