本帖最后由 移民电工 于 2010-12-21 22:15 编辑 ) j( b* ]! b2 C9 J/ P, b ; k4 k6 n! H' bThis 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! 4 p# q4 d* B( h1 G% D2 [ y/ L- \; G% v( Q$ y2 E, m. b# y' h, P
These kinds of device need be cleaning and maintaining before winter season.