[leonet99]

We got this side-by-side Whirlpool Gold series about a year ago and it started building up ice in the freezer compartment almost since the beginning, blocking the bottom drawer which we had to finally remove it completely.
By the look of the ice patches I can track the ice/water coming from the vents located on the back freezer wall, although there isn't much ice built on the coil behind these vents.
Everything else works just fine: the freezer and the refrigerator seem to do their job, although once in a while we also find a little adjustable window that is communicating between the freezer and the bottom refrigerator drawer, blocked by snow/ice.
We own a few Whirlpool appliances but this refrigerator and another up-right freezer that always gets it's defrost drain frozen, both came as a
disappointing surprise.
Please HELP!

[libertyappl]

The defrost drain seems to be the issue in both of those models. They make a heater to fix that (part # AP631361) or you can use a thin piece of wire down the drain, without touching the sidess of the tube, with a loop over the defrost heater.

Nat

[kakknott]

where is the defrost drain located

[woodchuckie]

Your drain tube may be stopped up with ice at the upper end because it drains too slow because it's stopped up at the lower end in the evaporator pan under the unit at the floor. It can get dust and mold in it. Once you get the ice out at the top a little pressure with a turkey baster will usually clear it out. Flushing it out with hot water and clorox may help.
Make sure it drains quick enough to prevent refreezing. . The drain should be located below the evaporator coils on the lower back of the freezer.
Take a bare copper wire and wrap it around a fin near the heater and put the other end a few inches down the drain. The heat convection may prevent it from freezing.