E20 error and unit reports leak or continuous flow when no water is used

Safety: No internal work is required initially, but disconnect power before handling sensors.

• Check for actual leaks: Close all taps and appliances. Observe the Idrobase display for flow indication. If flow is shown, inspect the house plumbing for dripping fixtures or running toilets.
• Adjust leak settings: In the controller menu, review the leak detection sensitivity and time thresholds. Increase the threshold if set too low for the installation.
• Inspect flow sensor: If no leaks are found, clean and inspect the flow sensor/turbine for sticking or vibration-induced movement.
• Secure piping: Ensure that the inlet and outlet pipes are firmly supported to reduce vibration that could cause false flow readings.
• Replace sensor if needed: If E20 persists with no real flow, replace the flow sensor assembly.