what icon do i have the hand set on to heat the room. and what is the hightest temp I can go to. There appears to be 4 icon, sun, tear drop, square and a circle, with small strokes comming out of it. what are they all for I dont know the model,as there isn't a manual,and cant contact previous owners. asap please. have family of 4 staying with me from today for one week and it is freezing here. mps1967@optusnet.com.au