Find water on floor near front wheels and sheet of ice in bottom of freezer 'pan'.

Evaporator pans are in the freezer, you mean to say the condensate pan or condenser pan. I could be your drain line is clogged and the water is running out of the freezer and onto the floor in front. To check this see if you have a sheet of ice in the bottom of the freezer floor.

I'm guessing the drain from the freezer defrost pan (below the freezer coil) is clogged and overflowing into the bottom of the box. You'll have to turn off an defrost the freezer, then remove the sheet metal on the back to expose the coil. Try pouring some water into the drain pan and if it backs up, use a fine wire like a sewer snake to clean it out.

Melt the sheet of ice with hot water or a hair dryer (be careful).
thats where the water is coming from. when in defrost the ice melt and rolls on top of that sheet of ice onto the floor. after you melt the ice also melt any ice under the evaporator. get it all!

You are right about the source of the water. It is coming from the evaporator coils. When the freezer goes into defrost mode, it melts the ice on the coils. The water is supposed to run out of a drain below the bottom of the floor of the freezer. It is common for these drains to freeze shut. If you clear this drain and remove all of the ice from the pan under the floor of your freezer, your problem should go away.

your refrig. goes through a periodic defrost cycle whereby this water is produced. It is supposed to travel down to the evaporation pan near the floor of the frig. Your evaportation pan may be clogged, remove the front lower panel and get a flashlight and examine it., or the tube leading from the freezer floor may be clogged or have ice it it. Check that out and if the opening of the tube has ice in it, melt it with a hair blow dryer

Yes the drain is clogged and the water that supouse to go through became ice so it make it worse.Put hot water in the drain hole until it runs through,it'll go to an evaporative pan on top of the compresor to keep it warm and vaporize the water.

The freezer will defrost itself periodically depending on the run times of the compressor. This is determined by the defrost timer and will shut the unit off and turn on a heater to thaw the frost buildup. The resulting water is then channeled to the defrost pan which rests on top of the condensor coil under the freezer section or on top of the compressor, (depending on manufacturer design). The tubing to the defrost pan could be plugged or kinked off. You may also need a modification kit installed to keep the defrost drain trough from freezing over. I would suggest you consult a local technician for advice in this area. Also, make sure all doors are sealing properly as an air leak will cause excessive frost build up and will have a tendency to freeze before it can all drain out, then any successive defrost cycles will overflow the trough and run out the front.

In back of the refrigerator behind a removable panel you will find a hose going into the drain pan under the refrigerator. Check and make sure there is no obstruction in the hose which would back up water into the freezer. After the drain hose is cleared the freezer should be defrosted and ice cleared from the drain area in the back. You can direct some hot water with some bleach in it through the drain to insure it flows into the pan.

unplug it again , sounds like your drain line has frozen, instaead of defrost water going down the tube and under refrig in drain pan, becuse tube is frozen its draining into freezer compartment and eventually spilling out through front of unit. totally defrost unit and behind back wall of freezer youll see a metal trough designed to catch water, in the center (under the ice is gonna be the drain hole, pour boiling water down until it runs freely

you have a froen drain thats why it is allways getting ice on the floor. you need to remove as much as you can then remove the back of the freezer so you can clear the drain pan and clear the drain. its not hard to do just you will have a lot of water on the bottom and your floor maybe. once you remove the ice from the pan have some very hot water and pour it in the pan utill the drain is free and the water go's down into the drip pan. shut the unit off untill tour done and be carefull around the coils. once its clear put the back on and plug the fridge back in. you will now have no more ice build up. make sure there is no food back there that can block the drain either. its a god time to clean the freezer out