a/c blows warm air.. I checked and replaced my filters and vents(as best I could).is there another way or better yet. Can someone pont me in the right direction for other things to check... the blower and everything else appears to be working fine. The wheel spins..
Any help or guidance would be appreciated... the name of this a/c brand is a carrier.which is located in my attic... next to the working a/c bryant.

The condensing unit should be outside. Check the fuses or the circuit breaker.

This code is for a limit or flame roll out manual reset switch, if the filter is clean , check for any obstructions in the vent pipe or a dirty burner. If it is a roll out switch that means the flame rolled out of the burner compartment when the burner lit up. This manual switch is a very small button(between the wires) that you will have to reset by pushing it in, there are these switches on the top and bottom of the burner (follow the wires) and a switch near the vent connection inside the furnace a round the combustion blower. If the switch that you have to reset is near the burners then it is a roll out switch, if it is near the combustion blower it is a vent limit switch, also look for a switch on the main blower housing, this is in case the filter is plugged or the motor fails. Hope this helps, Mike