This function is designed for those situations where the setpoint of Smart Valves and electric radiators is to be changed only via the app, and not manually.
When 'Lock Valve' is active, the clockwise or counter-clockwise rotation of the Smart Valve plastic shell will not produce setpoint changes.
Similarly, when 'Manual lock' is active, electric radiators will not respond to commands given by touching the +/- keys on the keypad.