A device 1, inclduing sensor means for sensing a difference between {HEAD ~ the air temperature} in {TAIL ~ the room} and air temperature outside the room, and for starting operation of the fan means and the cooling circuit when said difference amounts to a predetermined lower value and to stop operation of the fan means and the cooling circuit when said difference amounts to a predetermined higher value 
A device 1 , inclduing sensor means for sensing a difference between { HEAD ~ the air temperature } in { TAIL ~ the room } and air temperature outside the room , and for starting operation of the fan means and the cooling circuit when said difference amounts to a predetermined lower value and to stop operation of the fan means and the cooling circuit when said difference amounts to a predetermined higher value
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH