The FanCoil Discover Wizard should be run only after a WEMScontroller3 has been discovered and set up with the appropriate analogue inputs and outputs (fan and heating stages). For a guide on how to set up a FanCoil for the first time, see the FanCoil First-time Setup guide.
If a WEMScontroller3 has already been configured with the appropriate analogue inputs and outputs, the FanCoil Discover Wizard can be used to add a FanCoil to the Floorplan.
For a guide on the wizard, see Run The FanCoil Discover Wizard.