F3
FAULT CODE
Ideal
Fan Fault
High Severity
Engineer Required
The boiler fan is not operating at the required speed, preventing safe ignition.
Step-by-Step Fix Guide
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Step 1
Turn off the boiler
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Step 2
Do not attempt fan repairs yourself
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Step 3 Engineer only
Call a Gas Safe engineer to inspect the fan motor and wiring
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.