Can a bad zone sensor cause comm failure? also If there is comm loss would the fan be enabled? I think I have a wire issue, but voltages, frequencies are the same at all comm link connection points.
This setup is simple 2 units w/ tci 3 boards and one tracker panel. One unit has lost comm. Swapped tci boards and that did not work. same unit stayed in communication. I think the problem is the comm link that goes between the 2 units. ucp functions all work in test. leds on the tci board intermittenly flash. I'm at a loss as to where to go from here. Planning on running a temp wire between the units to see if i can reestablish communication to the 1 unit. any suggestions would help.