本帖最后由 移民电工 于 2010-12-21 22:15 编辑 7 S" }9 E: Y+ l& J0 H8 Q; G( b) E
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! 6 c; ?0 F5 G$ M# t / Q7 s* ^$ B) WThese kinds of device need be cleaning and maintaining before winter season.