Subzero freezer has frost/ice build up on the

Hi Nancy,

I bet you've got all kinds of frost / ice behind the plastic cover that protects (and shields from view) the cooling coil in the freezer compartment.

You probably have one or more: defrost timer, defrost terminator or defrost heating element that has failed. Call for service - or empty the fridge and unplug with door open for a day - ice will melt and when you plug in again it will work just fine. Until frost builds up again that is.

Good luck!

is it a frost free model? if it is the defrost timer may be out or the defrost element may be bad. but if this is not a frost free model the door seals may be bad and need replaced

this subzero freezer compartment did not free, but stayed cool. The problem was that defrost limit switch went bad, so when it was going to defrost cycle heater never came on, so it builded up snow and ice on evaporator coils and air stopped circulate. I replaced that little thermostat, and melted down ice.

Hi,

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heatman101

The heating element, located behind the back plate of the freezer, is probably not working. A failed heating element leads to a build up of ice around the evaporator coils in the rear of the freezer. If the back plate of the freezer is removed (ONLY DO THIS WITH THE APPLIANCE UNPLUGGED FROM THE POWER SUPPLY) and there is a large build up of ice around the evaporator coils then it's a fairly good indication that the heating element is not working. The heating element comes on periodically to defrost/de-ice the evaporator coils. Heating element is often activated by a small timer switch which turns the heater on for a set time every 24 hrs or so. Heating element may be open circuit or timer switch may not be operating. Most likely to be open circuit heating element.

If freezer is icing up, you might have a defrost problem. Frost free models have a heating element that is controlled by a timer to automatically defrost ice, ie defrost timer turns on defrost heating element every 12 hours to melt ice in freezer and allow good air flow.
You can test defrost element with an ohm meter(located inside freezer coils-will have two wires going to a plug connection), if OK replace defrost timer (located in various places depending on make and model

you have a bad seal, Take a dollar bill and slide it in between the door seal and the frig. slide it up and down to see if if has drag on it. If you find places it dont touch loosen the screws and adjust the hinges till it fits tight. In some cases you might have to tweak the doors if they need it.

It sounds like your defrost controller has gone bad. I have an LFC25760 and had ice build up in the bottom of the freezer such that water would start leaking onto the floor. The ice build up in the bottom of the freezer was due to a failing/bad defrost controller. Behind the back white wall in the freezer compartment exists the cooling fins along with a heating element underneath. Due to moisture that comes into the freezer from opening it, frost/ice builds up on the cooling fins. Thus the defrost controller turns on the heating element to melt the ice/frost off of the fins which then drips into a metal pan which channels the water to a drain hole which drops into the drip pan underneath the fridge next to the fan. The problem is that the defrost controller doesn't keep the heating element on long enough or the cooling cycle comes on too soon thereby freezing the water and plugging up the drain. I had my defrost controller replaced (just outside the warranty period!) and it worked for about 1-month and then same thing happened again. Instead of paying for another defrost controller that would probably not work 100% my serviceman used the old paper-clip trick. He took a paper clip, stretched it out and then wrapped one end around the heating element and placed the other end into the drain hole. Thus when the heating element comes on the paper clip keeps the drain hole warm/hot and prevents the water from freezing. It has been 9 months since this fix and I haven't had any ice pooling in bottom of the freezer.

you have a leak in the evapator you will have to call a subzero tech to get it changed..

freezer side is working good but cooling side is not cool