TEMPERATURE IS ADJUSTING ON ITS OWN
If the temperature in the display is changing, it is important to identify how much the temperature is increasing.
When the Timer mode is active, the temperature setting will rise 2°F after 30 minutes, and again after another 30 minutes. The air conditioner will shut off after the specified amount of time has passed.
This provides a slow increase in temperature to allow occupants the opportunity to adjust to the change in temperature more comfortably. This is beneficial at night in preparation for turning the air conditioner off during sleep.
If there is more than a 5° difference, it may because some portable models will display the room temperature instead of the set temperature. This is normal. As the unit cools the room, the temperature display will decrease.