I have a two year old Bryant furnace (355CAV042080) and Evolution Control thermostat (SYSTXBBUID01).

Last year and again this year, shortly after turning on the furnace, the thermostat displays:

SYSTEM MALFUNCTION
CALL TECHNICIAN

After pressing the RIGHT button on the thermostat the following is displayed:

FN 9/30/2012 9:03AM F
33- LIMIT FAULT
9 EVENTS ACTIVE

F=FAULT

The furnace continues to operate and warm the house at the set temperature. I cannot set or change the temperature from the main screen because of the MALFUNCTION message, although I can change the settings through the SCHEDULE menu.

My question is: Is this a known bug with this system? How can I clear the fault so the main display returns to normal, since the fault does not appear detrimental to the furnace's operation?

I don't necessarily want to call a service technician every year just to have him reset the fault and clear the display.