Upon arrival found system cooling properly but operating with 0 psi in water loop with water pumps making slushing noise, sounded like air in system.. All electrical components operating normal. Increased pressure to 65 psi standing pressure, while operational pressures held at 55 psi entering psi. Noise from water pumps gone once pressures increased. Customer noticed that painting he had done on his house the year before our installation had been chipped off by water from condensate pump drain lines. Requesting extending lines to ground so he can repaint the house.