本帖最后由 移民电工 于 2010-12-21 22:15 编辑 ' {# o' c1 G: e! v4 ^, i0 e9 H8 ^7 F8 X% h/ ^* w
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! 4 |8 } X8 d/ j7 y9 H/ x" Z$ ` 4 j" M6 R& k. LThese kinds of device need be cleaning and maintaining before winter season.