Originally Posted by BigGeorge
Yeah I guess maybe I am. Cold air blowing down on the sensor does not make sense. That would keep it from coming on. When I say the unit shuts off, I mean it is for like literally one second and then right back on.
It makes sense. The cold air would only blow on the sensor when the AC was on. It would get down to the setting temperature (quickly) and then turn off. But as soon as it turns off, the sensor feels the warm ambient air and turns it right back on.
Having said all that, I can't imagine it happening in one second. Further, there has to be a time-delay in the system that wouldn't let the compressor turn back on for a couple of minutes (at least). I wonder if there's some setting that causes the blower to come on for air circulation right after the AC has finished using it for cooling? Exactly which thermostat do you have? Perhaps you can post a picture?