Ice build up in bottom of freezer

Your drainpipe might be blocked, you will need to check the reservoir at the bottom back of the fridge. It's a bit technical. I would recommend getting some help.

If you have water build-up on the floor of the food compartment, or ice buildup on the floor of the freezer compartment, you are probably suffering from either a frost problem or from a clogged defrost drain.

Remove everything from your freezer, including all food and any shelves. Do not remove the icemaker (if installed.)
Look at and feel the panel covering the bottom or back of the freezer compartment. Is it thick with frost?
On top freezer models, are the holes in the top of the food compartment that lead to the evaporator choked with ice?
Is there ice forming on, or lots of water on the ceiling of the food compartment?
If the answer is yes to any of these questions, there's probably a defrost problem.
If you suspect a defrost problem, first remove any icemaker that may be installed. You will see a removable panel covering the entire back or bottom of your freezer compartment. There may be 6 to 10 or more screws holding it on. In some units there is a light socket attached to the panel; you'll see this arrangement most often in side-by-sides.

If you start to get an unusual buildup of ice in one particular spot in your freezer, especially beneath the icemaker, check for water leaks.
Water leaking onto the kitchen floor not traceable to one of the problems in Chapters 4 or 6 may be from a leak in the icemaker or door dispenser water system. Icemakers have a water solenoid valve mounted on the back of the fridge, usually behind the back bottom panel, and a water tube that leads straight up the back of the fridge to the icemaker. Door dispensers have a similar water solenoid valve with a water tube that leads beneath the fridge and into the door through a hollow hinge. If your fridge has both features, it's usually a dual water solenoid valve. It can be simple or not-so-simple to fix, but basically it's just a plumbing job.

Sounds like the drain is blocked and defrost water is collecting in the base. Try a full defrost and check the drain hole clears.

A common cause on many refrigerators is the the aut-defrost drain hose is plugged resulting in a back-up and depositting in freezer compartment. Check the drain pan under the fridge, if it is dry, then check the drain hose for blockage.

Gabe

this could be one of two things,,, the thermostat has failed or it could be the door is not shuting up tight if the door seal is letting warm air in that will cause the ice build up you getting, ,so will that thermostat if its running flat out all day, look at the door first, then try turning down the stat,

back wall of freezer has thick layer of ice frosting over, freezer not cold frig compartment seems to be ok.///????

Possibly the defrost element is faulty, this is located behind a cover in the back of the freezer compartment and is attached to the fins of the evaporator. It also has a defrost limit thermostat which could also be the problem. I presume that the fan is working after you have defrosted the unit?

One reason for the fan running is that it is trying to distribute the air in the compartment. Look at the very rear of the freezer on the bottom and see if the little vents, which allow water to disperse, are not filled with frozen ice. If so, turn off the fridge (unplug it) and use a hair dryer to melt that ice until it is all gone. That will probably fill the condensation pan under the unit and you'll need to empty it.

clear ice and with hot water pour into the drain hole till open and drains ,, take back panel of freezer out and wrap a piece of thick cooper wire around the heater and drop into the drain hold about 1in and it will keep drain open / thanks

remove back panel inside freezer. you will see drain tray at bottom with a drain hole in the middle - this is blocked usually with ice. melt off with a hairdryer and follow up with hot water till water flows away freely