I was curious if anyone could help me. I have a WaterFurnace 5Series NDV, an Intellizone zone panel (2 zones), and the new elite communicating Tstats TPCM32U03. I keep getting the red fault screen on both Tstats with "Communication Error" on the screen. The second zone does not always open or close the zone dampers properly even though they get 24V. The NDV has only the Aurora "Base" board, not the "Advanced" board. I have the Tstats hooked up properly as "traditional" tstats(P1) not the commmunicating hookup (P7). If it matters, I work for a WaterFurnace contractor, I just would like to find a solution before my know-it-all higher-ups. Thank you.