Performed cooling maintenance on one heat pump system. Checked all electrical, mechanical and performance of the system. Cleared and treated the drain line and washed the outdoor coil. I found that the system is slightly low on R-22 refrigerant, the evaporator coil has a leak on it, the secondary pan is rusted and in bad shape and the blower wheel is dirty. At the condenser the starter is burnt and pitted at the contacts and the fan motor is leaking lubricant. No other major issues were found, and the system is operational at this time.