Called out for no heat. Found water safety pan full and water safety tripped. Removed 5 gallons of water and traced issue back to condensate line/secondary drain not properly connected and pitching back to the furnace instead of the drain. After correcting those issues, furnace would try to ignite but combustion would not occur due to flue holding water in the attic causing improper pressure. Hung flue via strapping to achieve proper pitch. After lifting flue, water flooded inducer motor due to amount of standing water in flue pipe. Removed and cleared inducer assembly, reinstalled and verified proper operation of furnace at this time. Tenant had issues with main room power not coming on, found breaker tripped. Reset and power was provided to that area, might want to have electrician inspect wiring.