I arrived at our clients home for a 2 system maintenance inspection. Our client had concerns about the downstairs unit shutting off a not cooling properly for a few days she said it later came back on and they also turned the upstairs unit on to cool the space. By the way Denise was describing the problem I initially thought it was the water safety switch engaging and shutting off power to the outdoor downstairs condenser. I proceeded int9 the attic and found no existing evidence or water in the drain line for the downstairs unit. Only water in the upstairs unit drain line. I confirmed that both primary drain lines for both units are plumber to 2 separate sinks in the upstairs unit drain restroom. I proceeded outside and tested the electrical components for both upstairs and downstairs units. I began with the upstairs unit and tested a bad capacitor. It is below manufacture specifications. I also found the contactor to be burnt and near complete failure. The upstairs unit has extremel