I just got an apex jr, my first controller ever mainly for heating after a heater failed on me and was stuck in on position. Tank hit 91 but thankfully I got it down and didn't lose anything. My question is, does apex kill power to heater automatically if it hits high temp alarm setting or do I have to program it? Couldn't find anthing in the manual. I have heater set to come on at 78 and off at 78.5, fan set to come on at 79.5 until it gets back down to 79.