My air conditioner sounds like it is running. but no cold air comes out . then it just shuts down.. but it won't turn off I have an older Goodman ductless mini split unit that keeps "tripping" the switch between the indoor and outdoor units. I have had it checked and am told it is an issue with the motherboard. trying to locate part...can you help? Part number is B1100134.

Heating & Cooling - Fedders - A7D18E7B Thru-Wall/Window Air Conditioner