Question about LG LFX28978

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The frig and freezer of my LG LFX28978 is not cooling at all. iT Appears the the compressor shuts off & does not come back on until the unit is unplugged and then plugged back in

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  • LG Master
  • 9,472 Answers

You will need to replace the control board. The board controls the controls the compressor and it is not allowing it to kick back on after the unit has cooled. Here is the board to order.

The part comes with a 365 day, any part, any reason return policy.

Posted on Nov 10, 2012

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Posted on Jan 02, 2017

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maklean
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SOURCE: LG FRIG NOT COOLING

Hi have a nice day!
The thermostat cycles the refrigerator on and off. The refrigerator normally runs as long as the temperature inside the refrigerator is higher than the set temperature. If the temperature inside the refrigerator is cold enough and the thermostat still does not cycle off, the thermostat may be defective. If so, you need to replace it, because it cannot be repaired. If the thermostat is not defective, you may have a problem with the sealed (refrigerant) system, in which case you should contact a qualified appliance repair technician.
good luck.

Posted on Mar 17, 2008

22yooper
  • 828 Answers

SOURCE: LG refrigerator not working

Check and clean the condenser. Unplugging the system allows it to cool off. when you plug it back in it will cool until the heat rebuilds if not rejected through the condenser. Make sure the condenser fan comes on when the compressor runs. A faulty fan motor will cause the same type of problem.

Posted on May 19, 2008

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SOURCE: door open alarm will not shut off

Try pressing the cut off button manually while the door is open. It sounds like the switch may be bad.

Posted on May 14, 2009

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SOURCE: samsung rs2530bbp... Not cooling... Compressor

my frigerator RS2530BSH has the EXACT same problem! can anyone help??

Posted on Apr 05, 2010

heatman101
  • 43501 Answers

SOURCE: I have acquired an lg

Hi,

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

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Refrigerator or Freezer not Cooling or Getting Cold
heatman101
..

Posted on Oct 31, 2010

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LG lfx28978 Bottom Freezer cooling, but refrigerator section warm; no ice or frost build up anywhere. Started after an eight hour power failure. Also, fan located behind the unit on the lower right doesn't...


Melissa I think you hit the nail on the head! If it was running great before power outage, and problems started after! Power Surge sounds correct to me! below is a link for the service manual! As for board, sounds likely! Check the board for burnt fuses, I think there is 2. Sorry i can't help You more! Good luck!
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Sounds like might be the Temperature Control Thermostat or some sensor in the circuitry telling the compressor and cooling parts to keep running because it thinks it isn't cold enough. There is probably a circulation fan to blow the cold air through the damper and it may not shut off either, conveying too much cold thermal conduction through ducting and all frig parts, regardless of damper being closed or open. With the temperature set on low, do the compressor and fans ever shut off once cold temperatures are attained? Freezer should be 0 or lower, frig 35-40.
check this video at RepairClinic.comhttp://www.youtube.com/watch?v=5vA8Ksv5kVY&feature=player_embedded

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We just had the regrigerator installed today. It was cooling and then we put the food back in and shut the doors and the readout now on the display where the temperature is says ER and CF. The water does...


If the unit was just installed you would call for service. Error Code Er CF -The unit will receive signals from the BLDC fan motor in the freezer compartment during normal operation. If more than 65 seconds pass without a signal from the fan motor, an "Er CF" error message will be displayed. The Cooling Motor Error is usually an indication of a faulty fan motor or loose leads. Customer service should be contacted immediately. IF you have any further questions message me back Thanks Rick

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Check Relay and overload on compressor terminal. sometimes due to faulty relay overload tripping which makes tik tik sound. before replacing relay need to start compressor directly.

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If the compressor is running but the unit is not cooling you may have lost the refrigerant.  See if the condenser coils at the back or bottom are hot.  If they are only warm then the refrigerant is low and can be recharged.  Service tech should check for leak in coolant system.

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you might have a few problems,, make sure to check the condensor is clean, also make sure the condensor fan motor is going... you might have a bad Condensor fan motor, and Ref Control or a Freon Leak @ the Evaporator... I would call a tech to check it out...

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Frig section not cooling and at time appears to stop but freezer is ok


There is one compressor, condenser and evaporator in all refrigerators. The part that makes the cold inside the unit is the evaporator. It's in the freezer, behind a barrier on the back wall. It's a "coil" with many small fins. There is a fan that blows air over the evaporator which makes the air cold. This air comes from the freezer and stays in the freezer. The cold food section (the refrigerator) has a control that opens a hole for air to pass from the freezer to the fridge. This being said...you can rule out the "temperature control" for the fridge.

The sound you hear could be the compressor relay, the evaporator fan or maybe something else. It could be bad, it could be not too bad. (Like a fan blade a bit unbalanced with dust)

OK,,, back to the evaporator. There is a little heater next to the coil that turns on every 8 hours or so to defrost the coil. That's called the "defrost cycle". Makes sense, no? If the defrost timer (common problem) or defrost control board (common problem) go bad, your evaporator coil freezes up, and that's not good for anything in your refrigerator. But it can often keep the freezer section cold. You can easily disassemble the evaporator cover in the back of the freezer and take a look. If it looks like a block of ice, you probably have a defrost issue. An even, thin coat of frost is OK, but lots of ice is a no no.

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Any thoughts?


Any noises from frig at all??? cicking humming???pull the unit out and remove back cover. Is the compressor(football)size motor in back hot to touch??Lights are on in frig right?

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