when I first turn my thermostat on it blows out warm air.. after about 15 mins the system stops for about 5 mins starts again but blows out cooler air.... the temp says anywhere from 68-70. when we moved into this house it didnt come with a manual and im not sure how to set the programs. I found a site that kinda tells me what to do to set it at times that you will be home... but i have a business out of my home and am here all day long so I would like it to stay on all day with warm air coming out of it.