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 ...

Use a soft brush or blower to clean the fins ... and check for any loose connections. If your AC doesn’t turn on properly, a faulty capacitor or relay could be the issue. Its best to call ...