Don't know if any of this applies, but...
Only the furnace setting in zone 1 triggers our furnace. Also, if zone 2 is set to A/C (don't know about other settings), the furnace setting doesn't seem to get recognized in zone 1.
Now... recently my furnace didn't come on when I had it set to furnace. It was suggested that there might have beeen air in the propane line. After a few hours, it seemed to work again.
Jerry & Shirley Friedman; Dusty & Cricket
2014 Chevy Silverado 3500HD
2015 Mobile Suites 38RSSB3