On the keypad press F, 0 followed by engineer code (default: 6789) and # key to access the engineer menu.
Press 7 for System.
Press 4 for Star Menu.
Press 1 for Location.
Enter location 1672 followed by # key. This is the location in which the number of UCMs is stored. It will announce the value of 0 (no UCM).
Enter new value i.e. 1 followed by # key.
The system needs to be reset in order for the change to take effect.
Press # to go to previous menu (Star Menu) and press 2 for System Reset.
D9 and D10 LEDs on UCM05 will be flashing and you should be able to use your UCM05 again to download any modification.
Remember to always put the number of UCMs to be at least 1.
By convention, UCM ID=1 is reserved for upload/download using Comfigurator because when this UCM ID is disconnected, Comfort does not report \"Communication Failure\" while with UCM ID=2 to 8 communication failure will be reported.
