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How to fix failed defrost mechanism for LG LRFC21755

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I need help on model lg french door refrigerator model LMX25964ST freezer not freezing etc

Is compressor running? If not check out start cap/relay. Aslo check for evaporator ice buildup due to defrost mechanism not working -possible bad defrost element..

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Aug 25, 2017 | LG Refrigerators

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Clogged drain plug

Happens to me too. The drain freezes, freezer floor freezes and then ice starts building up to the point where it forms in the fan area and then the blades hit the fan and it gets very noisy. In my case, the container that is supposed to carry the defrosted water to the drain has a electric wire running underneath and twisting around the drain hole. I believe this wire is supposed to heat up and melt the ice to stop the drain hole from freezing. I believe the heating mechanism has failed in my case and suspect the same for you. Until fixed, this will continue to freeze up every so often. Search for your LG freezer drain heating element or parts.

Mar 13, 2014 | LG Refrigerators

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The fridge is not cooling. Error ER DH showing on door. Freezer works fine. Was told that the PCB board is to be replaced as well as the defrost module. Cost will be approx $600. Can you advise o

The "Er dH," also known as the Defrost Heater Error message, is displayed when the unit fails to reach 46? F within 2 hours of beginning its defrost cycle. This may be an indication of the defrost heater having broken or the temperature fuse having been pulled out of its slot. Contact customer service if the problem persists after having attempted a system reset.
Quick Fix
  • Unplug the refrigerator for 30 seconds and then plug it back in. Doing this will reset all the codes. Sometimes an error appears by fault. If it does not appear again after restarting, then the refrigerator is fine. If the code appears again, then there is a problem with the defroster.
Defroster Problem
  • The error code itself means that the defroster mode has failed. This means that the defrost mechanism cannot reach 46 degrees Fahrenheit within two hours to defrost ice in the freezer properly. Unplug the refrigerator and move all the items that can spoil into a backup fridge or freezer.
  • Look in the back top of the freezer. Use a screwdriver to remove the ice maker machine that blocks the back defrost panel. Remove the two side screws and pull away the plastic cover guard. Check the wire. If it is unplugged, then secure it to see if that is the problem. If the plug is connected, then remove it to check for more problems. Look for any faulted wires on the defroster. If it appears that the wires are fine, you need to replace the defroster panel. Contact your local LG dealer for the specific part number

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Feb 28, 2014 | LG LFC21760 Bottom Freezer French Door...

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I have an LG LRFD25850ST refrigerator. The ice maker along with the ice tray and all the walls around it continue to frost up. Why is this happening and how can I fix it?

This will be a defrost problem. There are 3 components in the defrost circuit.

  1. Defrost control board (ADC)
  2. The heat element
  3. A bi-metal
If any one of these components fails, the freezer will not defrost. This can be put into a manual defrost to help determine the problem. Put this into a defrost, by doing the following, in order:
  1. Unplug the unit from the wall outlet for at least 13 seconds.
  2. Turn the thermostat off (leave it off)
  3. Plug the power cord back in
In just a few seconds, you should hear a click and the element should come on. Shortly you will hear some popping and hissing. If you never hear this noise, either the heater or bi-metal will be open.

Jan 26, 2011 | LG LRFD25850 Stainless Steel French Door...

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Refrigerator section not cooling: >60F Freezer has been ok. No obstructions to air flow. diagnostic codes displayed are: Refrigerator ER and Freezer section DH Model: LRFC21755 please...


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

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Aug 28, 2010 | LG LRFC-21755 Bottom Freezer Refrigerator

1 Answer

Refrigerator is 18 months old, just quit working...nothing on it will come on is there a reset button.....have checked breaker box and tried different plug to no avail.

If you are sure you are getting power to the machine then you need to start by checking the OLP. This is the overloa protection device on the compressor. If that checks ok then • Check if the power switch is set to OFF.
• Check if the fuse of the power switch is shorted.• Replace the fuse. See page 13

Apr 12, 2010 | LG French Door Cabinet Depth Refrigerator...

1 Answer

Hello, I have a problem with an LG fridge GRS392GCA. temperature inside the machine raises after a few hours. I discovered that the coil was totally surrounded by frost. I heated the frost. the fridge...

usually it is not the heater but the controller for the defrost.
Which is a plastic package on the side if the coil, plugged into the roof.
Replace it, they are not expensive and testing one is.

Sep 12, 2009 | Refrigerators

1 Answer

Freezer and ice maker stopped working

Hi, Your problem will be fixed for a short time by defrosting the appliance but you really need to know why it is doing this? It could be several reasons for it! The main cause is that the defrost heaters have failed and so it does not deforst enough before it starts feeezing again causing the ice buid up again! Check them with a muti meter just to make sure. Let me know how you get on!

Jan 06, 2009 | LG LSC26905TT Side by Side Refrigerator

1 Answer

LG Fridge Freezer display has CF error code

Turns out a CF ER is a Compressor Fan problem.
Had a look and the fan was not turning, although it spins freely. Apparently it's a 3 phase 12v fan. I was able to get a resistance measurement across it but didn't know what to expect.
This also explains why it seemed a bit quieter and why the water is a bit warmer sometimes. The valve for the water dispenser is right beside the fan and it's getting pretty hot in there at the moment.

Dec 07, 2008 | LG French Door Cabinet Depth Refrigerator...

3 Answers

LG refrigerator makes loud noise and then stops running.

You are seriously frozen up. Defrost the unit completely. Then, be aware that 'window shopping', leaving uncovered liquids in the box and poor door sealing (too heavy a load on the door ... too much on shelves) can cause condensation. Defrost with hot air or leave unplugged and open for about 2 days. You'll see alot of water come out.

Jan 10, 2008 | LG French Door Cabinet Depth Refrigerator...

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