本帖最后由 移民电工 于 2010-12-21 22:15 编辑 $ H/ p# [1 e5 s; f ; }% a' @' h& ^8 |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! ( S1 j# D$ U2 ?8 K ; c4 D$ b' e( w; H: lThese kinds of device need be cleaning and maintaining before winter season.