F02 displayed, unit cycles rapidly, water temperature unstable.

This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.

If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.

Possible Causes

Intermittent flow sensor pulses, Loose flow sensor connector, Partially blocked turbine, Faulty PCB input

Safety: Close water supply and disconnect power before removing the flow sensor.

1. Clean flow sensor: Remove and clean the Ferroli flow turbine as described for A08. Ensure it spins freely.
2. Secure connector: Reseat the flow sensor plug on the PCB and ensure the cable is strain-relieved.
3. Replace sensor: If F02 persists and the turbine is free, replace the flow sensor assembly.

Medium 3/5

Flow Sensor / Turbine

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