本帖最后由 移民电工 于 2010-12-21 22:15 编辑 $ u! A `7 g' A, X, w/ z9 \' q7 ~5 V) x6 M
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 j; V; \4 M% L 0 ?, H1 H# L6 T4 Q/ [- I% T' hThese kinds of device need be cleaning and maintaining before winter season.