Called out today to perform a precision tune up. Checked all electronics and motor components to ensure equipment is operating within manufacture specifications. Cleared drain line and vacuumed clear from outside port. Drain line is heavily logged and I recommended a drain solve treatment to help break up the build up and coat the inside of the drain line. Noticed that there is no drain line float switch. Measured the temperature drop across the coil. Tightened wire connections. Outside I removed the fan from the condenser and foam cleaned the coil from the inside out. The contactor was pitted at the coil and buzzing when energized. Replaced contactor and retested system. Equipment is operating properly at this time. There is one more visit remaining on this years maintenance agreement. Thank you for always choosing Total Air!