To turn on a system the operator (that is you) needs to turn it on at the power button of the remote. (Do you feel empowered?)
If you do not see the vane move you need to do it again and aim the remote at the area of the sensor at the indoor unit. Note the orange light in the photo. It lights up “blue” in the cool mode.
Set the mode button to cool (snowflake), heat (sun), dehumidify (raindrop), or auto (letter “A”with square of arrows around it.
Set the desired temperture. Dehumidify only slows the fan for a cooler coil in the cooling mode. Leave the fan setting to “auto” in dehumidify mode.
Auto settings (to alternate between heat and cool without your input) and programmable settings, such as time/clock) are specific to each model, so read the operator manual if you want to use those features.
If the room is deep… or long… with the indoor unit at one end, (rather than wide or square), one might set the fan to high and aim the airflow to the center to reach the furthest end.
Much of this instruction might seem obvious, but it is important. Like if one pushes the button on the remote it will beep and lead you to think that it is in communication or “set”, but it only communicates when airmed correctly. Think about your T.V. remote, same principle.
Lastly the sensor(s) are at the indoor unit (head). There are no temperture sensors in the remote! Feel free to keep the remote in a drawer for safe keeping. It will not effect the system once you have set it.