Last night I noticed that was house was getting rather warm. I tried to turn down my thermostat and the A/C never kicked on. Usually I can here the stat click and see the spark. This time nothing. I tried popping the breakers in my box, but that didnt do anything. I'm wondering if the stat is bad or if the problem is more serious. I called a few places and one said to hit the reset switch on the outside unit. I couldnt find it since that side is up against a tree. The outside unit is a rheem rpca-024jcs heat pump. any thoughts?