, H+ l+ }& |1 S, _6 F3 I8 ?$ O, ^! ^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 ~2 Q" d9 n( h1 \9 N5 t1 Y9 x% l
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These kinds of device need be cleaning and maintaining before winter season.