I have a building with 12 Lennox RTUs with the lennox controls package DDC board in them. They also have, factory installed ,UNTs that do the actual temp control and the Lennox board only sees a tstat input that determines what the unit should be doing.
My problem is that I get periodic faults on the lennox board that indicates that the unit saw a simultaneous call for heating and cooling. The unit locks out and needs to be manually reset.
Anyone seen this or know what in JCI is causing the heat and cool
BOs to close at some point.