Ice Buildup in Bottom of Freezer

Is this auto-defrost model? Usually, heating element that defrosts the ice in back of freezer can go bad. How old is the model?

Most problems with side by sides frosting up is due to failure of the defrost heater in the bottom of the freezer section behind the panel inside.

Hi,

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If everything is cooling fine and the frost is not on the back wall but just the floor at the bottom then your defrost drain is stopped up. Remove the bottom basket and clean up the ice on the floor of the freezer. Look on the back wall and you will see some more ice up a littler higher at the back. This is where the drain is. Clean all the ice out from this area too using hot water or a hair dryer. Once you find the drain hole make sure you get all this ice out of it as well. You can take a screw driver once you have melted the ice and gently push it through the drain hole. Once the hole is cleared you should be able to pour hot water freely through the hole. (It is best to turn the refrigerator off while you do this)

There's a drain hole in the freezer side behind the bottom drawer in the back wall that must be clogh ; put hot water into it untill melted the ice and keep pouring water to clean the drain (don't worry , the water goes to an evaporative tray) .Keep the drain clean by putting every 3/4 months half a cup of clorox or bleach.

Here I am going to give you a lot of information. Because of the leaking your defrost condensate drain is most likely the reason. All on the page below may not be for your situation and some refrigerators do this over a period of time and the the water has no were to go but the freezer during defrost. Click on link below, Thanks, Sea Breeze
HOW TO FIX A LEAKING REFRIGERATOR OR FREEZER

Replace the defrost heater and defrost thermostat in the freezer section. They are located behind the freezer panel.

It takes weeks for ice to dissipate in a freezer.
You may can adjust your cut off lights or wire cut off to cut off before it's so full.

Sounds llik a defrost heater is open if you
have a VOM you can test it for continuity
Its probably behind a panel in the rear bottom
of the refrilgerator Should have a pan under
there to