No AC checked furnace first, found system running with no Air filter, so took a look at evaporator Coil to make sure it was clean, found to be clean, checked condenser, noticed compressor wasn’t coming on, opened up condenser and found compressor went into a thermal overload even though the unit was off all day, cooled down with water hose, fired unit back up checked pressure’s and noticed levels were extremely low, checked capacitor and found capacitor working fine. Recommend residential replacement due to age, system being low on refrigerant and compressor going into thermal overload.