Report "Dry pad I went up to check the MasterCool to make sure the belt was on properly, because it was making a small thump when it turned on. I turned the circuit breakers for pump and fan off at cooler box. Belt was fine. Didn't notice if the pad was wet or not, but it had been nice and cold just before I went up on the roof. Turned the circuit breakers on, came back downstairs and noticed about 4 hours later that I wasn't getting any cool air at all. What could I have done? (I did bring the pump in and try it in the sink and it worked fine.)"