Came home from work to find no AC. I checked the thermostat and the display was blank. After replacing the batteries and resetting the program, my AC unit never started up.
I checked: - The AC unit (Carrier) outside to see if the fans was spinning, but it was not. It does appear to move freely when I pushed/spun it. - The breaker downstairs, it was fine. Still I flipped it on-off-on. - The tech switch on the side of furnace was on, still I flipped that on-off-on. - The fan does come on, but only blows ambient temperature air. - When I set the thermostat (White-Rogers) Off, then to Cool. The cool message blinks for a while. - I moved the Y wire to the RC terminal, but nothing happens.
I just moved into this house, and AC was working fine for the past 3 months.
R
and/orRc
terminal at the thermostat? If you put the fan switch in theFAN
position, does the blower come on? When the thermostat is calling for cool, is there continuity betweenRc
andY
? Are there separate power supplies for heat and cool (i.e. is there a wired connected toR
andRc
, or is there a jumper between the two and only a wire toR
orRc
?