AVANTI REFRIDGERATOR HAS WATER BUILD UP ON THE BOTTOM OF THE FRIDGE

More than likely you have a clogged drain. This occurs when the machine goes into defrost and the melted ice somehow is prevented from draining and therefor refreezing and blocking the drain for the next defrost cycle. Over time it gradually builds and starts voer a larger area. Being you have a top mount refrigerator(freezer on top) there are air ways that connect the freezer to the fridege, which is how its cooled. The best way to resolve this is to unplug the machine for atleast 24-48 hours to let all ice melt
If thats not an option that you want to use the actual repair method would be to 1) unplug the machine 2) empty everything out of the freezer so you'll have room to work 3) take all the shelving and baskets out 4) locate the screws on the rear wall inside the freezer and remove them 5) take the back panel off exposing the evaporator coils ( the aluminum ) 6) directly below the coils is a trough of sorts and the drain is usually in the middle and runs out the bottom, remove the ice by carefully chipping it out or by using a hair dryer or hot water. 7) once all the ice is gone, the drain is visible and water can flow smnoothly down the drain dry the area and reassemble.

If you need further help, I’m available over the phone at https://www.6ya.com/expert/jason_4570d45317834dd3