Need manual for Sears thermostat number 152-7758 changed battery, had to reset, tried to run and I heard click sound as if the heat was going to come on. No noise coming from furnace. I figured maybe not programmed correctly, but I had it set to hold at 71 degrees everyday at different times. Is it a way to cancel out the daily programmed settings and just have it to run and hold the settings at 71? I also thought it could be that the pilot light is out? Please help!