When the heating system repeatedly kicked on, despite the cabin feeling overheated, I had no idea why the unit kept on kicking on and off. I first noticed that the heating system was cycling on and off more frequently because of the unpleasant temperature swings indoors. I’d switch from shivering to covered in sweat within a few hours. Thinking the heating system required a bit of upkeep, I updated the filter, cleaned the vents, and inspected it for faulty connections as well as dusted the burner assembly. I finally went online for problem shooting advice, and found all sorts of potential problems with the control unit. Thermostats handle the communication with the heating system, making them vital for operation. However, control units are sensitive to dust buildup, external temperature problems, and even difficulties with wiring. I started by switching out the battery in the control unit. Even though the display was lit up, I figured the batteries could be old and not functioning properly. When this didn’t solve the heating system malfunction, I decided to scrub the control unit. I removed the cover plate and wiped all of the surfaces carefully, including the bimetallic coil. Still having no luck, I finally hired an HVAC serviceman for heating system repair. The serviceman discovered that the wiring of the control equipment was responsible for the issue. Tightening up the wires took him less. Of course, I still needed to spend money a flat fee for the service call, which was rather expensive. While he was there he was nice enough and went ahead and cleaned, tuned and inspected the entire heating system to promote more reliable and efficient operation. From here on out, I will take better care of the control unit.