本帖最后由 移民电工 于 2010-12-21 22:15 编辑 % M- L1 t h0 U/ O" c5 A9 t( Q) v! `0 R7 Q
This is a horizontal furnurs mount on the top of building and intake air form outsid of building, I think you can not fix it by yourself! 5 d& T/ P6 N% x ( |3 }3 B1 O$ G. dThese kinds of device need be cleaning and maintaining before winter season.