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Customer Questions and Answers for Compressor Start Relay by Lg

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Manufacturer Part
4.89 (64)
By: Lg
Part Number: OEM17848026
Manufacturer Part Number: 6749C-0014E

The Compressor Start Relay is an OEM part for LG refrigerators, playing a critical role in the starting mechanism of the compressor. This small but crucial component helps to kickstart the compressor, enabling it to begin the refrigeration cycle that cools the interior of the fridge. 

Causes of a bad Compressor Start Relay include wear and tear over time, electrical surges that can damage the relay, or overheating of the compressor unit. 

Symptoms of a bad Compressor Start Relay include:

  • The refrigerator failing to cool properly or maintain the set temperature.
  • A noticeable increase in the electric bill due to the refrigerator working harder to maintain temperatures.
  • Strange noises, such as clicking sounds from the compressor area
  • The compressor not starting at all, leading to a complete lack of cooling within the refrigerator.

This OEM LG part is also compatible with some Kenmore models.

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Questions & Answers

For Lg Compressor Start Relay (Part Number: OEM17848026)

1 Answer

Hello Greg, the parts are not listed as being interchangeable. Compressor start relays, overloads, and capacitors are closely matched to the compressor's design and specifications.

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David for Model Number LFD22860ST

So my fridge is not getting cold enough...I checked and the compressor was not running. I found a faulty PTC start relay and the overload was cracked so I change both components. Now the fridge kind of works...Every so often when the compressor goes to start it tries but it does not get there and the overload trips. Once I notice this I unplug the fridge and plug it in again. This forces the fridge to restart and all is OK until the next time. Is this another faulty start relay or is my compressor on the way out. I OHMED out the compressor and the resistance values look OK. One thing I did notice is that the compressor does make an internal knocking sound even when it is only slightly moved around. Not sure what this means. Like when you open and close the freezer drawer the compressor makes a knocking sound. Thanks for any insight. Cheers.

1 Answer

David, As far as the internal knocking noise, that would be normal. For this issue though, it does sound like the compressor is on the way out.

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1 Answer

PK, I found the part number (610.54) But it doesn't show a replacement cross over and doesn't come up as available in any of my resources.

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Bradley for Model Number LRBC20512TT

Hi, unfortunately it doesn't explain which wire is which and so it doesn't make sense to me how 3 & 4 pin relays go down to 2 pin relays. I am under the impression that there is a piece of metal on the relay surface that grounds it acting like a pin. I mean this is a great monkey see monkey do video, but I don't operate like that. I have to understand it as a legitimate fit vs a magical rigging. Besides, if it is grounded somehow it makes me wonder how and do I need a different over load protector or devices to accommodate it? I assume it is appropriately sized for the current it will carry? Your videos are great, I just need more if you could. Unfortunately, I am not at home to investigate my fridge as out of state and a panicky gf is back home. Being I leave a month at a time I have to execute the repair flawlessly as I won't have time to wait for more parts. Hoping to get these in before I get back. My model is LRBC20512TT. I'll be updating all the typical culprits such as OL & Capacitor on top of replacing the starter relay just for piece of mind when gone. Thoughts and explanations on what I need and why as I have never messed with a 2 pin relay and it doesn't register for me on how it works would be appreciated. Thanks, look forward to making an order soon so I can fix it when I get home.

1 Answer

Bradley, this type of relay is a PTC relay. The PTC relay operates by using a ceramic material in series with the start winding so that as more current passes through it, it's resistance increases eventually not allowing the start winding to have adequate access to ground. This causes the compressor to use only the run winding after initial start up. The start relay 6749C-0014E and overload protector 6750CR0004S certainly are common causes for a compressor to not turn on. If the overload protector is receiving 120VAC, then the control would not be an issue. The overload protector disengages the circuit based on amp draw to protect the rest of the system and can be tested for continuity when the power is disconnected from the unit. The only thing left in the circuit if the overload is receiving voltage, the overload is good, and the relay is good (the relay should not rattle when shaken lightly, if it does then the ceramic inside has broken), then the compressor would be bad and would require a certified technician to replace it.

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1 Answer

Joe, For this new relay the red will still go to the overload and the blue will go to the number 2 terminal on the relay, the capacitor would be left off as it is not needed.

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Steve W for Model Number 6749C-0014E

My Refrigerator Make/ Model: LG LMX25981ST. Fault: not cooling (compressor not starting) Based on the information I found on your website, for the most likely cause (90%), I ordered compressor start relay part number 6749C – 0014E. Didn’t look like a big deal at all to replace. I just received the new “relay” (labeled thermostat assembly on the bag). Took the back off the refrigerator only to find that the relay and capacitor assembly up to the compressor looks nothing at all like the new component. The part number on the old assembly is EECON 51304044. When I looked up that part number on your website it crossed reference to the part number that you sent me. Totally confused now. Hoping for some advice. Looks like I can use the part that I just received.

1 Answer

Steve, The original part most likely came as an overload relay assembly. For the new one you have to order a new overload as well as having the relay. The black wire will go to the overload and the blue wire will go to the relay on terminal number 2.

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1 Answer

Hello James. Black to the overload, Pink to start, and blue to run on the relay. Thank you.

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James

I have an LG refrigerator with a bad Ebg 62325702 relay. I cannot recall which pins the wires were connected to they are pink, blue and black. Can you let me know what is the proper configuration? Also I have ordered the correct relay, but if I were to use a universal 1/10th hp supco relay for the time being until the proper part comes could you tell me which wires should go where? The relay says L, L and has an option to connect a capacitor or connect the capacitor wire to a jumper that spans two terminals. I would assume that the pink wire which I believe is supposed to be the capacitor wire should go the the jumper and blue and black should go to the L terminals, which are line in and out. I could also use a 3 in 1 hardstart, which I have. In that case I would assume that blue and pink and either blue or black should go to the start wires for this? Thank you.

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