本帖最后由 移民电工 于 2010-12-21 22:15 编辑 ( P- L. f. w, e0 U' c7 p8 W : T- p3 E8 F2 |7 O) B8 IThis 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! - t$ s# \: l) @/ p3 K 2 b% ^3 ^! D; T$ z. @These kinds of device need be cleaning and maintaining before winter season.