three controllers top middle and lower vent........hot air comes out through upper and lower....middle vent blows cold.......help...I replaced the microfilter last summer...I hope I didnot unplug anything...any idea what is wrong help
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three controllers top middle and lower vent........hot air comes out through upper and lower....middle vent blows cold.......help...I replaced the microfilter last summer...I hope I didnot unplug anything...any idea what is wrong help