F42
FAULT CODE
Ferroli
Sensor Control Protection Activated
High Severity
Engineer Required
On Ferroli Bluehelix Tech, F42 indicates the sensor control protection has activated due to heating or return sensor damage or disconnection.
Step-by-Step Fix Guide
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Step 1 Engineer only
Call a Gas Safe engineer to test and replace the faulty sensor
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.