Frost free freezer forming layer of clear ice on floor of freezer
This sounds like clogged drain / hose in the freezer compartment, here's why:
When the defrost circuit turns on, the compressor turns off. The defrost coil melts frost that collects on the freezer coil and drips in to a small pan located below the coil. The pan is formed so that the water that drips in it can flow to a hose connected under it. When the defrost cycle completes. the compressor runs again, bringing the temperature in the freezer to about 0 again. Any water remaining anywhere in the freezer will turn to ice very quickly.
If the hose should become clogged with ice, or slowed by mold, bacteria, etc. - water flow will be slowed, and / or eventually stopped. Ice will become thicker and thicker on the floor of the freezer as there is no place for the water to go.
A service manual for the appliance would be a good idea, but may not be required. You'll need to unplug the freezer and empty the contents. Defrost manually with a hair dryer or other heat source. If you decide to chip away ice, do so carefully.
The defrost and drain area of most refrigerator / freezers are located behind the rear panel of the freezer compartment. This is where the manual would indicate where the parts are located. Remove any ice maker installed if needed to remove the back panel.
Defrost any ice previously hidden by the panel. Chipping ice here should be a last resort, as sharp edges can damage cooling coils, tubing and the drip pan itself. Use a turkey baster filled with hot water to direct a stream at the area of the pan filled with ice. Hot water will likely have to be directed down the opening on the pan to melt ice in the hose as well.
Once the ice is cleared, mix about a 10% to 20% solution of bleach and water (1/2 ounce bleach to 3 ounces water) and direct down the drain hose. This will kill and inhibit further growth of mold and bacteria in the hose, which should help it drain water quickly.
Re-assemble and plug into power.
I hope you found this Very Helpful. If you need more help, ask again - but include the freezer manufacturer's name and model number. Good luck!
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