What If My Window AC Won’t Turn Off? Your window air conditioner unit temperature is regulated by a thermistor or a thermostat. These sensors can occasionally fail. When they do, the air ...

If your window AC unit won’t turn on, there’s a good chance the issue lies in the outlet or the circuit itself. Also, consider how the unit was installed, and how it sits in the window.

Extending the wiring for the AC unit’s controller board (Credit: HowToLou) In the case of widely available window AC units you can indeed use them as designed in a window, or as [HowToLou] is in ...