Refrigerator not cold and ice keeps building up in lower freezer unit all over .keep defrosting and runs good and then same problem.

First, I'm not a WOODS tech.
Check your warranty and call for service.
*** Following is for information only.***
* Your circulation fan (usually on the freezer side) has ice building up near fan. OR there is a paper or plastic caught in the fan. Check and clear debris.
* Check for air movement while fan is running. Many have plastic ducting that pulls air from the bottom that is usually covered by the lower drawer. Pull out the lowest tray and check the back for ice or food that fell in back to block the air vent. If it's iced up, DON'T hit it as you will crack the plastic. Leave the door open, Turn off and let the freezer defrost. (remove food).
* Check the upper fan vent for ice blockage. Defrost as needed.
* Unplug refrigerator to defrost. (Get help to move as the fridge is heavy and may tip over on you.)
* Once completely free of ice (it takes a while. A fan blowing into the freezer helps. ***DONOT use a heater!*** Warps panels and may over pressurize refrigerant.)
* Allow a completed defrosting of the freezer. (Place frozen foods in refrigerator side to keep it cold while the refrigerator is off. Better to transfer everything to another refrigerator.)
* Keep checking and dumping the drain tray as the ice melts. If no water drains then the line may be clogged. Call for service.?
* Plug in refrigerator but leave out where you still can unplug it if you need to continue to defrost. Move it back only if everything is working (so far).
* Set the temperature to middle of dial and the freezer diverter to normal (middle). Leave fridge empty to allow it to cool down without a load. Check for icing (there shouldn't be any as there is no moisture in box to ice up.) If there is ice then it did not defrost enough. Turn off and repeat manual defrost (open door)
* Once your sure all the ice is gone and the freezer is cold. Move refrigerator back into the counter/wall. (it's lighter but get help anyway.) Start putting back the frozen goods. Try not to cram in everything. Keep enough space on racks to allow air flow AROUND the whole shelf. Keep away from leaning food against the walls and back.
?* Leave the temperature setting at mid range. Your refrigerator should be able to keep food frozen at this setting.
* Check your door seals for cracks
* Check your door perimeter for warmth. It should not be sweating or ice cold. Cool or slightly warm to the touch is normal.
* Check your side panels (not doors). It should be cool but not iced or sweating.
* Final, with the Temperature set at mid range. If your still getting ice then you have a vapor leak. (Moist air getting into the freezer) Note that this moisture can also come from hot moist food placed in freezer without pre-chilling it. If you must put hot food In the freezer. Then place it in the refrigerator section for at least an hour prior to the freezer. The refrigerator can handle the moisture load better than the freezer. The refrigerator just collects the water and drains it to the bottom pan.
* Again, check your warranty and call for service. Have them perform yearly maintenance to check everything.
Aloha, ukeboy57

PS; If everything is okay (so far) then only gradually adjust the temperature SLOWLY. You will find that maxing to the coldest setting will only build up the ice quicker. Normal freezer operation can take care of the occasional (daily) opening of the freezer door. It will 'dry' out the frost and ice build up (If given the chance). But if you find that Ice keeps building then you need a bigger new ice box.

First, I'm not a LG tech.
Check your warranty and call for service.
*** Following is for information only.***
* Check for air movement while fan is running. Many have plastic ducting that pulls air from the bottom that is usually covered by the lower drawer. Pull out the lowest tray and check the back for ice or food that fell in back to block the air vent. If it's iced up, DON'T hit it as you will crack the plastic. Leave the door open, Turn off and let the freezer defrost. (remove food).
* Check the upper fan vent for ice blockage. Defrost as needed.
* Unplug refrigerator to defrost. (Get help to move as the fridge is heavy and may tip over on you.)
* Once completely free of ice (it takes a while. A fan blowing into the freezer helps. ***DONOT use a heater!*** Warps panels and may over pressurize refrigerant.)
* Allow a completed defrosting of the freezer. (Place frozen foods in refrigerator side to keep it cold while the refrigerator is off. Better to transfer everything to another refrigerator.)
* Keep checking and dumping the drain tray as the ice melts. If no water drains then the line may be clogged. Call for service.
* Plug in refrigerator but leave out where you still can unplug it if you need to continue to defrost. Move it back only if everything is working (so far).
* Set the temperature to middle of dial and the freezer diverter to normal (middle). Leave fridge empty to allow it to cool down without a load. Check for icing (there shouldn't be any as there is no moisture in box to ice up.) If there is ice then it did not defrost enough. Turn off and repeat manual defrost (open door)
* Once your sure all the ice is gone and the freezer is cold. Move refrigerator back into the counter/wall. (it's lighter but get help anyway.) Start putting back the frozen goods. Try not to cram in everything. Keep enough space on racks to allow air flow AROUND the whole shelf. Keep away from leaning food against the walls and back.
* Leave the temperature setting at mid range. Your refrigerator should be able to keep food frozen at this setting.
* Check your door seals for cracks
* Check your door perimeter for warmth. It should not be sweating or ice cold. Cool or slightly warm to the touch is normal.
* Check your side panels (not doors). It should be cool but not iced or sweating.
* Final, with the Temperature set at mid range. If your still getting ice then you have a vapor leak. (Moist air getting into the freezer) Note that this moisture can also come from hot moist food placed in freezer without pre-chilling it. If you must put hot food In the freezer. Then place it in the refrigerator section for at least an hour prior to the freezer. The refrigerator can handle the moisture load better than the freezer. The refrigerator just collects the water and drains it to the bottom pan.
* Again, check your warranty and call for service. Have them perform yearly maintenance to check everything.
Aloha, ukeboy57

PS; If everything is okay (so far) then only gradually adjust the temperature SLOWLY. You will find that maxing to the coldest setting will only build up the ice quicker. Normal freezer operation can take care of the occasional (daily) opening of the freezer door. It will 'dry' out the frost and ice build up (If given the chance). But if you find that Ice keeps building then you need a bigger new ice box.

Hi,

Check out these tips...they can help you figure out what is going wrong with your refrigerator and why it is not cooling

Refrigerator not Cooling or Fridge not Cooling

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heatman101

Hi,
Some ice build up is normal, but it should go away when the unit defrosts...if it continues to build then the defrost is not working correctly...
Check out these tips...they can help you figure out what is going wrong withyour refrigerator and why it is not cooling

Refrigerator not Cooling or Fridge not Cooling

How to Defrost Refrigerator Defrost Timer Problem

Water Running in refrigerator from Freezer

Refrigerator or Freezer not Cooling or Getting Cold
heatman101

Could be frost build up in the freezer compartment or a bad defroster,
Try running a diagnostic defrost cycle test and see what happens

may be you have problem with the Evaporator fan motor not running, defrost heater, defrost timer, open gap on door gasket and bad thermostat (cold control), it may kept the compressor constantly running. Good luck.

The most likely problem is in the defrost system. Behind the freezer panel there is not only an evaporator fan, but also the evaporator itself, and a defrost heater, termination bi-metal, and drain pan (or trough). You will likely find ice build-up in the evap coil. This could be caused by the defrost timer, the heater, or the termination bi-metal.
Have a service tech look at the unit.

it can be two things the refrgerator probably has a small refrigerant leak therefore it ices up, or the defrosting heater on the begining of the coil is faulty.

From your comment. It's not that you have to defrost the parts, that's what they're called. "defrost timer", "defrost t-stat" and "heat element". Defrosting the whole fridge for a few days actually will clear the ice blockage if that's it but it will return in a couple weeks if the "defrost cycle" isn't doing its thing. A fridge typically goes into some form of "defrost cycle" to keep it "frost free". As an example, every 12 hours the compressor turns off and the evap. fan turns off then a heat element turns on to melt the light coating of ice on the "cooling coils". Once about 1/2 hour goes by the heating turns off and the cooling turns back on again. This repeats over and over to keep the ice from building up too much. If that cycle is broken, the ice will build and build till the whole coil is a block of ice. Then the air can't flow around it to provide cold air for the whole unit. It acts basically like putting a large block of ice in the freezer and keeping the doors closed... without a fan to move the cold air only the very lower portion of the freezer is cold, the rest is warm.

Sort of sounds like the adaptive defrost board is bad and you are not going into a defrost cycle. Do you have ice build up on the lower interior freezer section? Are the vent slots full of frost/ice? Ideally, pull the freezer shelfs out and take the little aluminum panel off the interior back to look at the coils. Are they basically a block of ice and frost? The problem happens when the unit doesn't go into defrost cycle and the coils freeze up. That blocks the air flow in the freezer so you get frozen food at the bottom but soft stuff at the top. And the frige just can't get enough cool/cold air from the freezer section to cool anymore. Power surges or blackouts, etc. can just destroy the defrost circuit board. Without good air flow the unit is not going to cool properly.