Performed AC diagnostic on system. System is original to the home and is 1997. System is a single stage unit zoned off into 2 zones. Says left side unit is not cooling the house down. Cycled system for cooling. Outdoor unit kicks on extremely loud. Indoor unit is not responsive and is not blowing any air. Checked indoor unit electrical and system components. System is recieving proper low voltage command and high voltage power, but indoor fan is not turning on. Found a dead secondary motor control that was not letting indoor fan motor turn on. Informed homeowner of findings, and put in a temporary secondary motor control to further evaluate system. Unit kicked on and started cooling. Refrigerant levels are in range and system is producing proper temperature split. Outdoor compressor is pulling in high amperage. Condenser fan motor is within range. Primary motor control has slight burning and pitting at contact points. Secondary motor control is within range. System is older and ineffic