For the longest time, I thought there was some big problems with my furnace. My furnace did not seem to work always, no matter how much I fiddled with the control unit! I had just moved into a rental house and a really nice one at that. The rent is cheap, but it’s my responsibility to keep up with the maintenance of appliances and other amenities in the home. That includes the HVAC system. At first, I thought I had been swindled with a crappy heating and cooling system. It was the winter too, so I desperately needed my heater to work. I could swear that I had been setting the thermostat to the comfortable temperature that I wanted it to run at, but it was doing literally nothing. Finally, I decided that I could not figure this problem out on my own, and I called a HVAC professional to come out and see what was wrong with my heater. I made an appointment for the next afternoon, and when she arrived, she did some checking here and there. Then she asked me to elaborate on the particulars of the problem. I told her that I would try to set the appropriate temperature on the thermostat but nothing would happen, then she went over to the thermostat to check it. She hit a few buttons on the touch screen and opened a menu that I didn’t even know existed on the module. Then with a couple more button presses the furnace kicked in. She managed to accomplish what I could not accomplish in hours of fiddling with that darn thing. It turns out that I simply needed to seek out help from the owner’s manual to know how to always adjust the thermostat, then despite that, I still had to pay for the maintenance call!