My Bryant/Carrier FB4ANF036 electric furnace/heat pump is acting strange. While have thermostat on cool-auto, the air will initially be cool then hot air will come out and I can smell the heating element kick on. If I switch the thermostat to off, the EM heat light turns on. Hot air continues to come out and the furnace will not turn off unless I turn the EM heat switch from normal to EM heat. The light then goes off and just recirculated air comes out of the air vents. I can repeat the above process an unlimited number of times. Cool air lasts for about 30 seconds before switching to hot air.