Arrived and found water in the secondary pan. Found a new transformer that was shorted out pulled out of the unit. Put a new transformer in with a 5amp fuse in line with it and found that the old float switch was shorting the circuit out. Replaced the transformer, replaced the float switch, rewired the low voltage in the unit. Removed the water out of the secondary pan and found the drain was clogged and causing this. Cleared the drain and tested the system. System is operational. DJ to bill customer.