Found inducer assembly full of water due to a clog in condensate drain tube. Cleared clog and drained inducer. Performed clean and check on gas furnace. Tested all electrical components, inspected gas supply, drains, burner assembly, inducer and blower assemblies, conducted combustion analysis, measured temperature rise, checked filter and cycled system. Found high ohm reading on hs ignitor and clear signs of wear on filament. Notified customer that the ignitor is beginning to fail. Replaced HS ignitor. Cycled system in heating. Unit is operating normally at this time.