Performed service diagnostic. Inspection found that the drain line was clogged on the system that services the East side of the house. I cleared and treated drain and vacuumed out the primary drain pan. Also looked over the condenser because customer said she heard a grinding sound from one of the units. I found that the unit that services the West side of the house has a fan motor that has no grease left which is causing the motor to grind. Presented the client with options to replace the motor but she declined.