New system (installed 6/2009): 2 zones, Bryant Evolution Control thermostat. Control panel regularly shows "system malfunction" reading with several "active events" recorded, although heating continues. Certified Bryant repair person here several times, but can't determine the problem. Says the thermostat is extremely "sensitive" and can react to any "hiccup". Really? Is there anyone who has a better idea for what could be going wrong?

The Evolution contoller should be able to specifically retrieve any fault codes on the device to help pinpoint an intermittent problem (ex. Tripping a limit switch)

Yes thank you. I knew about that; however, it keeps tripping even after the tech re-sets it.