Performed clean and check on a.c. system unit leaking heavily due to improper installation of drain line by a separate company informed customer that existing drain line must be removed and replaced and a condensate trap installed. Also sold maintenance plan to the customer. Installed drain line and trap cycled system and confirmed proper operation continued clean and check found loose wire on contacter from compressor which I repaired all operations are now normal at this time informed customer there is some residual water around cabinet from the unit leaking that will dry in roughly 24 hours.