本帖最后由 移民电工 于 2010-12-21 22:15 编辑 : Z' [$ ]# d. @7 J- B: d8 e0 ]+ W: v) | R4 `
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! 9 H8 {* O7 p5 x$ r: D- ? - J6 J8 b6 @9 T% \These kinds of device need be cleaning and maintaining before winter season.