trying to find source of leak.

The fins inside the cooler box ice up due to humidity and when the fridge defrosts those fins melt that ice build up. It then empties into a small tray across the box under the fins. From there it is supposed to drain to the outside behind the outside inspection panel. The drain tube has a small plug in the end with a tiny hole in it. In a perfect world, that tray fills with water which drains through the drain hose. It's stopped by that little plug and that little hole ensures the flow of water is slow enough to evaporate before draining onto the floor. If any of the drain holes get plugged with debris usually the water will overflow into the fridge box and onto the floor inside the rig. If the water drains too quickly, it will overflow into the fridge compartment which can be viewed outside using the inspection panel.

Whew! Open the fridge and find the tray under the fins. Remove the tray cover by simply lifting it. Check the drain hole, usually on the left side to ensure it's clean and clear of obstructions. Next, take off the inspection panel outside the coach. Find the drain tube and pull it out of the small drain cup. Carefully pry out the small black plastic end but don't lose it. Water should drain out of the tube. Clean the small hole in the black plastic plug and reinsert it into the drain tube. You should have no other issue.

You don't give a model number of your fridge so it's hard to trouble shoot any other issue you may have. If the above does not solve your problem, let us know the model and make of your fridge and whether or not you have an ice maker and we will go from there.....Dennis