The radiator actuator is equipped with automatic window open detection, which is switched off at the factory. As soon as the radiator actuator detects a cooling by more than 0.3°C within 2 minutes, this is evaluated as "window open" and the thermostat is closed. OPN is displayed on the radiator actuator and the setpoint temperature jumps to 4°C in the HomePilot. No entries can be made on the device for 15 minutes.
To cancel the 15 minutes in advance, you can briefly remove a battery.
The "Window open detection" can always be switched off in the menu. To do this, press the menu key and select the menu item dEt (Detection) with the Plus key and briefly press the menu key. Change the state with the Plus key and confirm with the Menu key. To exit the menu, press the menu key again.
The display shows OPN, what is the reason?
