Hunter thermostsat conversion problem

I had the same problem last summer when I replaced my Duotherm thermostat with a Hunter. What I didn't realize at the time was that new thermostats have a built in delay to protect the compressors during situations where powers will go off and right back on( like during a thunderstorm). It takes 2 1/2 to 3 minutes for the AC to be triggered to come on. Originally, I thought I had a bad thermostat when the AC didn't come on. I took the Hunter back to Lowes and got a second one with the same result. I went to the house disgusted and when I came out an hour later the AC was running. I turned it completely off. I resorted to calling Hunter and the tech politely explained this to me. Embarrassingly, it was on page 25 of the manual. I went back to the trailer, turned it back on and waited a few minutes and it powered right up. Worked normal after that.