thermistor is obviously located on the evaporator.  in the eco mode when the unit cycles off, the room will get 5 or 6 degrees above set temp, yet when you  hit the set button, the set temp comes up and then the "room" temp and yet it may be only 1 degree above set.  In the cool mode its 2 degrees below and 2 degrees above on the cycling. otherwise  it cools great.