Turning on the heater in an AC unit without a remote control can be a challenge, but it is possible. Here are some steps on how to do it:
Locate the control panel on the AC unit. It is usually located on the front or side of the unit.Find the button or switch that controls the heating function. It may be labeled “Heat” or “Heater.”Press the button or switch to turn on the heater. The AC unit will start blowing hot air.