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
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