本帖最后由 移民电工 于 2010-12-21 22:15 编辑 4 P, i$ a# Y$ Z- M7 U" B' c) {$ n0 C( y+ X" s5 C
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!: W( [ O1 F0 t: D, Z! k
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These kinds of device need be cleaning and maintaining before winter season.