本帖最后由 移民电工 于 2010-12-21 22:15 编辑 ; W5 s" D9 O% a; A8 n0 [! h! i H6 P1 t$ K
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! 8 l" b/ }+ C/ L, l7 t6 M( u2 |9 d& ]7 j' q4 X4 Q) y# p
These kinds of device need be cleaning and maintaining before winter season.