'Defrost refridgerator

Notice the Norcold has a little cup to catch the thawed frost water. The Dometic does not. That's why you'll see the end of the white tube in the Dometic pic, stuck out through one of the holes or slots in the lower vent cover once it's back in place.
The Dometic tube should have a little black plug in the end. It allows water to drip out while keeping bugs from getting in. It also reduces the air flow through that tube. Believe it or not, the cooling in these RV fridges is so "fragile" that too much air flow will hinder the fridge from reaching a low enough temp.

Some fridges want a little bend in that tube to form a "trap" holding water so air can't flow, but more water will push through.

Food section has a drain line that allows condensation that drips from the FINS into drip pan and drain out.
If Norcold drain line will go into a drip cup next to burner area in outside compartment
If Dometic drain line will drip outside thru lower vent/access cover to outside compartment

Norcold


Dometic






Freezer section...towels to mop up thawed water. NO DRAIN LINE.

There is a drain line attached to a catch basin somewhere in your refrigerator that is designed to drain any thawing ice or dripping water from condensation away and out of the refrigerator. Sounds like when yours began to melt the ice, it was just too much, the tray filled up. Did it over flow?

Those catch trays under the refrigerator (like in a house), are designed to evaporate as fast as they fill from the heat generated from the refrigerator. When water flow faster than it can evaporate (because you've turned the refrigerator off), it overflows onto the floor.

When defrosting your refrigerator, after a few minutes (leaving the door open), the ice will begin to soften. Using a plastic spachler or plastic pie cutter, pry the ice chunks off the walls and remove them when they fall. Continue to wipe the water from the bottom of the refrigerator inside until everything is thawed and removed.