Totaline Thermostate P274-1100 works fine when following programming but when I adjust the temperature manually it will start the furnace and after a few minutes the screen displays E2 error, blanks out, and then returns to normal and follows the programming correctly. So the problem is only when I override the programming.

SOURCE: Carrier Thermostat Displays Error Code E3

Carrier Air Conditioning display an error code E5 and then swtich off

SOURCE: Fan Won't Spin

Is it humming like a stuck motor or rattling, like a loose fan. If it's rattling, the fan could eith be loose on the motor or, the center hub could have broken loose.

SOURCE: My Carrier 58WAV136 forced air heater's problem is

There should be a code list inside the furnace panel access door. Find it and see what code 41 says, as I can't remember right off hand. Some of the possible causes could be air in gas line or low gas pressure. Could have blocked vent especialy if vented with plastic. Check for bird nest or dirt dobbers in vent. If vented with plastic could not have proper rise 1/4 per foot and have water trapped in pipe blocking vent. Is this a new problem or has this occured since installation?

Mike Butler

• 6674 Answers
• Posted on Mar 13, 2010

SOURCE: Gas Furnace will not start when outside temperature rises to 50F

The anticipator basically prolongs or reduces the time from shut down to start up, so your furnace or air conditioner isn't cycling too much , off and on. It also will anticipate that the setting you have the thermostat set at is near, and will shut thermostat/burner off early, assuming that the temperature will be reached soon, just from heat already in chamber being circulated through system. If it gets too cold before furnace turns on, adjust anticipator, if too hot when it shuts down, go the other way, but whenever you move it, just go a little at a time, until you get it where you want it.

Testimonial: "Thanks for the explanation about anticipators. Do they figure much in furnace problems?"

SOURCE: Blank readings on Carrier Comfort 3 zone thermostat

The stat that works is called the main and the other two are called slave stats. The stats must be set to heat or cool the same as the main. If you want one room to cool and one to heat , sorry. Need to upgrade to auto changeover. Is this AC actally a Heat pump?