Diagnostic Customers have 2 units. She has a leak in the master closet and she thinks that its one of the drain pans over flowing. On arrival upstairs unit was operational. Downstairs was not. On downstairs unit found tripped safety switch (prevents operation). Water is present in emergency drain pans at both units. Primary drain lines is are clogged. Both units’ primaries indirectly tied to plumbers stack (recommend plumber to seal). Downstairs unit has no service stack. Neither unit has a blowout valve. Although both units have clogged this does not account for leaking in master bedroom bathroom (two story home both units in attic space above 2nd story). Recommend having plumber out to inspect leak. Recommend condensate repair-( to install service stack), blowout valve-(to clear primary drain line) and in-line and pan float safety switches-(to protect ceilings.