I just added an MS14A (EagleEye) to my system yesterday and addressed it as H1. It is the only "H" unit in my system. Prior to yesterday, I had no icons on the "H" line in "Find Other Computers". Now there's a RED, and 3 through 16 are YELLOW.
Makes me wonder if the YELLOWs in the "A" line are real - since most of my sensord installed themselves in "A".
To be sure about what's going on try the following. Open AHP, click on
Tools and then click on
Clear History. This will clear the contents of the Activity Monitor.
Find Other Computers builds some of its display, over time, from the contents of the Activity Monitor, clearing history resets both reports. Check back every day or so to see how the YELLOWs build back up. If this happens again you may have to do some more hardware level research. I've never seen this fast a buildup exclusively in a single house code with only two unit codes in it. Keep us posted.