Hello Ric_Vice, The reason for you not being able to adjust settings of the shown control unit is that it is doesn't support Vitovent D app control. There are three types of wireless control units for Vitovent 100-D H40E B55 (F) with different spectrum of functionalities: Control unit wireless (5V power supply, Mesh, up to 10 Mesh members per control unit, Mesh setup via Vitovent D app, NO control via Vitovent D App) Control unit wireless battery (AAAA battery power supply, Mesh, up to 10 Mesh members per control unit, Mesh setup via Vitovent D app, NO control via Vitovent D App) Control unit wireless WiFi (5V power supply, Mesh, up to 10 Mesh members per control unit, Mesh setup via Vitovent D app, control via Vitovent D App) And FIY: Right now there is no algorhithm on the mainboards of the 100-D H40E B55 (F) control units of fans to auto-adjust the air volume flow when an uneven numebr of fans is installed (this feature is only supported with the cable system right now). As a result you will have a disbalance of exhaust and supply air. It is not that critical but I just wanted to let you know. Best Regards
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