Client stated that up stairs unit would not turn on. Verified customer concerns. Found up stairs thermostat was blank, Inspected air handler in the attic. Older insulation. R4 grey duct work. 30 year old air handler, Unit had power going to it. Manually tested unit and unit came on. Found coil pan to be full of water. Suggest condensate flush. Found secondary line not going out side and ending in the attic. Tested capacitor and it was at spec. Tested motor amps and it was at spec. Unit was clean and operating. Replaced batteries in thermostat and it came On. Inspected out door unit. Tested all capacitor and they where all in spec. Tested condenser fan motor and it was at spec. Tested compressor amps and it was at spec. Coil was vary dirty suggest coil clean Plum condensate secondary line out of attic. Clear and flush primary drain. Clean out door unit. Club membership Diagnostics Client went with recommendations.