Performed AC maintenance on a Day and Night system. Systems cooling temperature split is 22 degrees. Condensate lines are clear but have no safety switch. Duct runs are sealed. Outdoor coils were caked in dog hair but chemically cleaned today. Primary start component is failed on the fan terminal causing the fan to leak oil prematurely. Suggesting replacement. Compressor amps are ok at this time. Refrigerant levels look ok. System was cycled before leaving.