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Repair information, service manuals, and troubleshooting help for refrigerators manufactured by LG Electronics.

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LG refrigerator is not cooling...

hi, I have lg knock refrigerator model# LMXS30796S that’s not cooling.. the freezer is cold but the fridge is warm.. there is no dust or dirt on the condenser coils. the compressor an fan is running. but the evaporator fan is not.. I have tried to reset it, but after I reset it. it seem like everything is working find for about 3 min an then it cut off (evaporator fan)…. but the compressor and condenser fan still be running…. I have replace the main board but still having same problem. the evaporator fan is not coming on…. can anyone help???

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This refrigerator has two evaporator fan motors and two evaporators. When the compressor is on and running, all fans should be too. When the door opens the fan for that section stops. The other components that control that fan are the temperature and defrost sensor. The most common issue is a failed evaporator fan. The bearings overheat after a few mints and this is only a 12vdc low amp motor, it shuts down.

To across this motor you can cause serious damage. Unplug the refrigerator. Remove all selves and drawers. The center bar has screws in top n bottom. Pop if the cover that hides the drew and remove the bar. The entire panel will come off easy, IF it isn’t frozen in place due to a failed defrost component. It just snaps into place sonif pulling on it doesn’t work it might be frozen. The ice will form behind the panel and Incase everything including the evaporator coil. You don’t want to pull and damage those expensive coils. Let the ice thaw for a day with the doors open. The part you need is that panel. It will have an evap motor and tempature sensor. It’s best to buy the complete panel. The old panel has insulation in and foil and will get damaged removing it. This makes it much easier to justunplug and plug in new panel.

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I use a portable clothes garment steamer to defrost and remove panel with little to no damage, also good for clearing frozen drain lines

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@txcellence Zen Tech those portable steamers are perfect for defrosting evaporators and drain lines.

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Thermistor

The thermistor monitors the refrigerator temperature and sends the temperature reading to the control board. The control board then regulates power to the compressor and evaporator fan based on the thermistor readings. If the thermistor is defective, the compressor and evaporator fan may not run when necessary, or may run too frequently. To determine if the thermistor is defective, test it with a multimeter. The thermistor resistance should change in conjunction with the refrigerator temperature. If the thermistor resistance does not change, or the thermistor does not have continuity, replace the thermistor.

Thermistor 6500JB2001B

Genuine OEM Part # 6500JB2001B

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