My Kenmore Side by Side Has Frozen Coils in the Freezer.

Evaporator Fan

• The evaporator fan sits just behind the freezer at the rear of the unit. This fan circulates air through the freezer, ensuring that stagnant moisture has no chance to freeze on the coils. If the fan breaks down, the ambient moisture in the air will settle on the coils, causing them to freeze. While a broken evaporator fan is not repairable and requires replacement, check whether the fan is simply impeded, rather than broken. Refrigerators that are too close to the wall can sometimes block access to fresh air for the evaporator fan. Move the refrigerator out and check whether the fan is running before replacing it.

Defrost Apparatus

• Consisting primarily of a timer and heater, the defrost apparatus sits at the rear interior of a Kenmore side by side refrigerator. This part of the refrigerator occasionally heats up the interior coils, allowing any accumulated moisture to melt into a drip pan. This helps the freezer work optimally, since ice covering the coils can actually insulate the coils from drawing heat from the freezer chamber. If either part of the defrost apparatus is broken, ice will continue to accumulate.

Drain Tube Clog

• Even if the defrost system is working as it should, a clog in the drain tube can result in the same accumulated water freezing the coils. The drain tube channels water melted during defrosting into a drip pan at the bottom of the refrigerator. If the drain tube is clogged by debris or buildup, it won't channel the water properly and can cause the interior coils to freeze. Clearing the drain pan and unclogging the drain tube will solve this problem.

Dirt on the Coils

• Although the interior coils are somewhat protected from dust and detritus, the protection isn't airtight and a measure of dirt can settle on the interior coils. Dust and dirt particles provide a core for moisture particles to gather around, and as they settle on the interior coils, they freeze. Occasionally wiping down the interior coils can prevent the coils from freezing.