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Forum Index => Refrigerator & Freezer Repair => Topic started by: Blanton on July 10, 2019, 05:54:21 PM

Title: Need help with a LG LinearCompressor
Post by: Blanton on July 10, 2019, 05:54:21 PM
Hey guys I need help for the LG linear compressor went out in a service call and had the normal linear compressor failure running not compressing. I ordered a compressor went back out recover the refrigerant replaced filter dryer Brazed in a the new compressor. I did flush the system with nitrogen prior to putting in the new compressor. Refilled it with my fieldpiece scale. The compressor runs for five seconds turns off three minutes later it runs for five seconds and turns off. I did go direct to the compressor with 120 V and it ran and compressed fine. But it wonít run for more than five seconds when everything is hooked up properly. Any ideas?

Itís a Kenmore LG this is the model number 79571073010

Really appreciate any help you can give me!
Title: Re: Need help with a LG LinearCompressor
Post by: Izzy98 on July 16, 2019, 07:48:37 PM
You might want to check the fittings you brazed when you put on the compressor and filter drier. One of the fittings might be restricted which can be causing the compressor to slow down, shut off and try again.
Title: Re: Need help with a LG LinearCompressor
Post by: houptee on August 11, 2019, 08:29:08 PM
Is it the newest LG compressor version did it have a red sticker on the top?
If so you need to do a software update to the main board with the special black box programmer it looks like a jump drive.

New version LG Compressor part # TCA38091801 & Software Jig TCA35911910
Compressor has a purple decal and red decal on top warning about the software update.

FLS075LANA is the new compressor model number
It replaces these older LG/Kenmore Elite compressor versions:
FC75LBNA
FLA075LANA
FLB075LANA
FLB075LBNA
Title: Re: Need help with a LG LinearCompressor
Post by: tcarmen on August 11, 2019, 08:51:39 PM
Is the programmer a part, or something you would need to be LG auth warranty in order to get?
Title: Re: Need help with a LG LinearCompressor
Post by: houptee on August 12, 2019, 12:13:26 AM

Its a part you can order software tool separately as TCA35911910 or apparently sometimes it comes in the box with the new compressor.


Here is a service bulletin about how to do it.
Title: Re: Need help with a LG LinearCompressor
Post by: tcarmen on August 12, 2019, 06:59:47 AM
Thanks!

PS the TCA35911910 number shows up as a "COMPRESSOR,SET ASSEMBLY" when I looked it up @ Marcone.

Is that the programmer or a whole compressor kit?
Title: Re: Need help with a LG LinearCompressor
Post by: houptee on August 12, 2019, 09:17:01 AM
I think the part # TCA38091801 comes with the Compressor and software jig as a kit.

You can get the software jig separately as part number CJT30000002

NOTE:When servicing an LG fridge that will have the compressor replaced with their new Universal Compressor (TCA38091801), control boards manufactured prior to 2014 WILL NOT WORK with the update jig. This means that any fridge made 2013 and prior must have the control board replaced AND reprogrammed with the jig before running the compressor. Failure to do this will result in a dead compressor which must be replaced again.
Title: Re: Need help with a LG LinearCompressor
Post by: Zoren on November 14, 2019, 07:17:41 PM
Hello,
I have Kenmore Elite 795.72053.113  with  FC75LBNA Compressor and EBR73093613 PCB, manufectured 2011
Compressor is broken and i bought FLS075LANA compressor to replace old one.
I'm loooking a PCB for my new compessor.
For my new compressor to update software on it, I need PCB that is made after 2015.
I've tried to buy a new PCB from "Encompass" and "Siers", but they all manufactured before 2015.

If you know anything where i can buy that PCB please help. Thank you.
Title: Re: Need help with a LG LinearCompressor
Post by: houptee on November 14, 2019, 11:45:07 PM
From what I heard LG has stopped selling the new universal compressor and the software jig to the general public. Only authorized LG technicians can order them. They extended the warranty for parts and labor to 5 years and compressor is still 10 years total but owner pays labor after the first 5 years from date of purchase. So I don't know if you can find the main board anymore from online part sites. Try the link on this page at the top for appliancepartspros.com maybe they can get it.
Title: Re: Need help with a LG LinearCompressor
Post by: houptee on November 15, 2019, 09:37:19 AM
The instruction sheet for the software update tool says if you have trouble updating call LG technical support 800-847-7597
Title: Re: Need help with a LG LinearCompressor
Post by: re5513 on September 14, 2020, 01:31:39 PM
NOTE:When servicing an LG fridge that will have the compressor replaced with their new Universal Compressor (TCA38091801), control boards manufactured prior to 2014 WILL NOT WORK with the update jig. This means that any fridge made 2013 and prior must have the control board replaced AND reprogrammed with the jig before running the compressor. Failure to do this will result in a dead compressor which must be replaced again.

Apologies for bringing up this older post; however, I have a customer with a # LG Refrigerator who needs the new universal compressor and (based on this) also is in need of an updated control board.  My question is, do all the control boards need to be replaced or just the main control board (EBR73304210) and then flashed?  I'm hoping it is just the main control board.

Cheers,
RE5513
Title: Re: Need help with a LG LinearCompressor
Post by: houptee on September 19, 2020, 11:50:14 AM
Read this thread has the mainboard bulletin info.
https://www.appliancejunk.com/forums/index.php?topic=29128.msg124594#msg124594
Title: Re: Need help with a LG LinearCompressor
Post by: re5513 on September 21, 2020, 03:55:47 PM
Thanks for the timely reply, that is helpful.

Looking at this particular unit, I realized that the PCB P/N I cited was not correct.

The actual PCB has the P/N EBR65002702.  I understand from my parts guide, that this was updated to the replacement part EBR65002703.  The page you cited from Service bulletin CNZ201900235-04 only covers EBR7xxx...xx PCBs.

I observed that the FW test port on the EBR65002703 (& the EBER 65002702 as well) has a different pinout than configured in the standard CJT30000002 Firmware update tool.  It appears the VCC, Ground, RX and TX ports are there, but they are not in the right order.  I'm wondering if I can simply rewire the one of the connectors to match the pinout of the EBR65002703 PCB and whether the update tool will be able to update it.  If not, then I'm not sure what the repair strategy will be other than finding an old, new stock OEM compressor that matches the original one.  Given that the original fridge was manufactured in 2010, that might prove challenging.

Thus, my first question is can the EBR65002703 board be updated to work with the LG universal compressor?  If so, what manufacturing date of the board can be used to do the update?

The second question is if the EBR65002703 board can't be updated to work with the universal compressor, what would be the next best compressor replacement steps or strategy?

Cheers,
RE5513
Title: Re: Need help with a LG LinearCompressor
Post by: houptee on September 23, 2020, 11:44:56 AM
I think you have a compressor ends in LANE which is different than the Universal compressors that are LANA.


The last letter E cannot be substituted with a A its different inverter control system.

Title: Re: Need help with a LG LinearCompressor
Post by: re5513 on September 23, 2020, 11:49:40 AM
>I think you have a compressor ends in LANE

That is correct.  The original compressor is the FC75LANE.  Thanks for clarifying that it uses a different inverter system compared to the FC75LANA.
Title: Re: Need help with a LG LinearCompressor
Post by: re5513 on September 23, 2020, 01:02:17 PM
The LG part number for the FC75LANA compressor is TCA36411702 and this appears to still be available.
Title: Re: Need help with a LG LinearCompressor
Post by: houptee on September 23, 2020, 07:01:36 PM
Did you look up the current part number to replace the LANE compressor?
They cannot be interchanged with anything other than that type compressor.
Usually the inverter control is in a box next to the compressor on the LANE systems.
Title: Re: Need help with a LG LinearCompressor
Post by: re5513 on September 23, 2020, 07:20:11 PM
Yes.  I typed my last reply too fast.  It should have read, "The LG part number for the FC75LANE compressor is TCA36411702".  The use of a different inverter system with the FC75LANE compressor is a big help.  Thanks.
Title: Re: Need help with a LG LinearCompressor
Post by: houptee on September 23, 2020, 07:20:51 PM
And are you sure the compressor is bad?
The LANE compressors can be tested with a power cord if you are very careful not to short anything.
You take a old computer power cord and put 3 insulated alligator clips on the end.
Clip to the 2 pins on the compressor (only 2 pins are used on linear compressors the 3rd pin does nothing) and clip the ground to the compressor frame.
Plug in to 120v outlet and compressor should run. If it does run then the inverter board is most likely bad, they revised the inverter boards once or maybe twice.
Title: Re: Need help with a LG LinearCompressor
Post by: re5513 on September 24, 2020, 02:51:33 PM
The main PCB on this unit has a "test mode" that forces the compressor to run, according to the unit service manual.

In test mode 1, it measures >200V at the compressor which would appear to indicate that the compressor is good.  Whether or not the Inverter is good depends on what kind of signal the inverter is designed to output.  So, while the AC RMS voltage measurement is in the proper range.  The waveform and frequency (1.16KHz) is curious in that occasionally it shows a negative DC offset (which I would not expect).  See the photo below.

(https://photos.app.goo.gl/7ktMvqn19YaVFyKn7)
Title: Re: Need help with a LG LinearCompressor
Post by: re5513 on September 24, 2020, 03:00:51 PM
^ I meant to say that the INVERTER appears to be good (output at the compressor is >200V RMS).  It also appears to me that the compressor is running, albeit very quietly when the Main PCB Test Mode 1 is selected.

Here is another look at the voltage at the pins of the Compressor (compressor not attached, just the voltage at the connector).  When the connector is attached, the compressor appears to run.
Title: Re: Need help with a LG LinearCompressor
Post by: re5513 on September 25, 2020, 07:13:21 PM
More follow up.  I made up a jig to safely connect the FC75LANE compressor to 120v RMS line power.  It hums quietly; however I note the following.
     1. The high pressure output does not get warm and the low pressure input does not get cold
     2. The compressor draws a whopping 0.5A when connected this way.

With the low amp reading I believe there are two possibilities.
     A. There is a seal inside the FC75LANE compressor that has failed and it is not able to achieve any kind of compression. or
     B. It is low on freon.

I would expect it to make more noise, perhaps metallic noises if it a seal had failed so next up I'll test the freon level.

Thanks again for the hint to connect it directly to line power, that was a very useful diagnostic.

Cheers,
RE5513
Title: Re: Need help with a LG LinearCompressor
Post by: houptee on October 20, 2020, 09:36:14 AM
What did you find when you tapped the system?
Title: Re: Need help with a LG LinearCompressor
Post by: re5513 on October 20, 2020, 09:53:49 AM
The low side was about 60 psi and stable, compressor running or not running.

I pulled the compressor and noted on the bench that it had no output on the high pressure side indicative of valve failure.

I found a good deal on a NIB compressor which I installed in the unit and also put in a new inverter board.  After nitrogen fill and then deep vacuum, I filled it with the specified 4.9oz of R-134a and the fridge appeared to be back in business.

I got a call about 3 days later indicating the fridge was no longer cooling.  I looked at it again over the weekend and found a leaking schrader valve on the low pressure service port on the new compressor.  That was frustrating.  Replaced schrader valve  It appears the new compressor now may have failed.  High pressure is a steady 95 psi, low pressure is a vacuum, no cooling.  Thus, tis a puzzlement at this point.
Title: Re: Need help with a LG LinearCompressor
Post by: tcarmen on October 20, 2020, 02:10:12 PM
If you didn't change the dryer and flush the high side, it has probably failed again. The compressors often leave a bunch of contamination in the system when they fail.
Title: Re: Need help with a LG LinearCompressor
Post by: re5513 on October 21, 2020, 03:04:47 PM
I changed the dryer and installed a fresh one with the compressor swap.  I did not flush the system so perhaps that is the issue.  My thought is that the failed schrader got the system to a low freon state and overheated the compressor causing the somewhat temperature sensitive valve in the compressor to fail.
Title: Re: Need help with a LG LinearCompressor
Post by: mdesbans on November 01, 2020, 08:31:39 PM
Hello Houptee, I have an 2011 LG with a PCB # EBR733042. The compressore stopped working and I replaced it with the universal FLS075LANA compressor, and did perform the software update. I read the notice you posted about the PCB boards that need to be replaced. I could not find mine there, even though the manufactured date is old, form 2011. The new compressor does not want to start. Would you have any suggestions on what to do next? Can I test this invertor compressor? Please advise. Thanks!!!
Title: Re: Need help with a LG LinearCompressor
Post by: mdesbans on November 10, 2020, 01:28:29 PM
In case it helps anyone, I replaced the PCB with one manufactured in 2019. It shows "version 2" on the lower right side of the board (my original board showed version 1). I tried to a software update on this new board, but it did not go through. After reading a few posts online, I realized it did not need to be upgraded after all because the PCB was newer and already had been programmed for the new compressor. Once I replaced the board, the new compressor started working. Best.
Title: Re: Need help with a LG LinearCompressor
Post by: pmoph71 on November 10, 2020, 04:35:02 PM
All, this is great news. I also have a 2011 LG fridge with the same EBR733042 board that shows version 1 in the lower right corner. If is understand correctly, a new main PCB assembly will not need to be programmed for my new compressor, right?
I'm looking at the AP5332617.
Title: Re: Need help with a LG LinearCompressor
Post by: quada on April 07, 2021, 01:38:12 PM
Also trying to replace FC75LBNA but in a 795.71033.010 manufactured in 2013 with a EBR65640204 PCB.  From the sounds of it I will need a new PCB flashed with the new software. Would anyone be able to point me in the right direction to finding which PCBs would be compatible with the FLS075LANA replacement compressor?
Title: Re: Need help with a LG LinearCompressor
Post by: houptee on April 08, 2021, 02:07:56 PM
I think you will need the newer version board but not sure if it has the newest software flashed on it, I would assume it should but cannot tell you for sure. It might have a decal on it that tells you the flash version.
Title: Re: Need help with a LG LinearCompressor
Post by: quada on April 08, 2021, 02:30:47 PM
I think you will need the newer version board but not sure if it has the newest software flashed on it, I would assume it should but cannot tell you for sure. It might have a decal on it that tells you the flash version.

Unfortunately every EBR65640204 board I am able to find is the same version (version 3 10.12.01) as what I have in the unit already and I did confirm that mine is functioning correctly.  Do you know if I would be able to choose any PCB in the list to work with the mainboard bulletin posted above to use with the FLS075LANA?
Title: Re: Need help with a LG LinearCompressor
Post by: George227 on April 08, 2021, 11:01:34 PM
quada, i have the exact same fridge model and same board but they sent FC75LANE as the replacement compressor. Why are you replacing with FLSO75LANA?
Title: Re: Need help with a LG LinearCompressor
Post by: quada on April 08, 2021, 11:10:26 PM
I was looking at replacing it with FLS075LANA because of the third post on this thread stating FLS075LANA is the updated compressor for FC75LBNA which is the compressor that is in the unit now.  I also didn't think you could replace a LxNA compressor with an LxNE one?


Is it the newest LG compressor version did it have a red sticker on the top?
If so you need to do a software update to the main board with the special black box programmer it looks like a jump drive.

New version LG Compressor part # TCA38091801 & Software Jig TCA35911910
Compressor has a purple decal and red decal on top warning about the software update.

FLS075LANA is the new compressor model number
It replaces these older LG/Kenmore Elite compressor versions:
FC75LBNA
FLA075LANA
FLB075LANA
FLB075LBNA
Title: Re: Need help with a LG LinearCompressor
Post by: houptee on April 09, 2021, 09:37:03 AM
No you cannot mix compressors and boards between compressors that end with letter E and A. They are different control system for the inverter that drives the compressor.
The newer LG compressors that they call "Universal" are only for A compressors and require a software flash.
The older E compressors there is no universal replacement only the original one can be used and no software flash required.
Usually the E compressor has the box next to the compressor that has the inverter board inside and they did have a revision to that control board but it you just order the entire board and you get the newer version you do not flash it.
The E compressor was LGs older generation linear compressor and seemed much better than when they switched to the A which failed constantly and caused class action lawsuits etc.
The E was never part of any of those lawsuits.
Title: Re: Need help with a LG LinearCompressor
Post by: quada on April 09, 2021, 09:46:25 AM
quada, i have the exact same fridge model and same board but they sent FC75LANE as the replacement compressor. Why are you replacing with FLSO75LANA?


George227, based on the information houptee just posted, do you think they sent you the wrong compressor, or do you think I have the wrong compressor in my fridge?



No you cannot mix compressors and boards between compressors that end with letter E and A. They are different control system for the inverter that drives the compressor.
The newer LG compressors that they call "Universal" are only for A compressors and require a software flash.
The older E compressors there is no universal replacement only the original one can be used and no software flash required.
Usually the E compressor has the box next to the compressor that has the inverter board inside and they did have a revision to that control board but it you just order the entire board and you get the newer version you do not flash it.
The E compressor was LGs older generation linear compressor and seemed much better than when they switched to the A which failed constantly and caused class action lawsuits etc.
The E was never part of any of those lawsuits.


houptee, you had posted a service bulletin on the first page.  Would I be able to choose any of those compressor PCBs if I purchased a new FLS075LANA?  Or would you recommend going with a FC75LANE compressor and getting a LANE compatible control board to drive it?
Title: Re: Need help with a LG LinearCompressor
Post by: houptee on April 09, 2021, 09:53:17 AM
Also trying to replace FC75LBNA but in a 795.71033.010 manufactured in 2013 with a EBR65640204 PCB.  From the sounds of it I will need a new PCB flashed with the new software. Would anyone be able to point me in the right direction to finding which PCBs would be compatible with the FLS075LANA replacement compressor?

When I look that fridge up on searspartsdirect it shows compressor is
Refrigerator Compressor TCA36411702 that is the FC75LANE
So somebody probably put the wrong compressor in your fridge and possibly blew the inverter.
The inverter board is Refrigerator Compressor Control Board EBR64173902
Title: Re: Need help with a LG LinearCompressor
Post by: George227 on April 09, 2021, 02:53:33 PM
The board in this fridge is labeled FC75LBNA so i think Sears sent me the wrong compressor and their parts dept. is wrong on their site which has FC75LANE as replacement because you can't replace an A with an E inverter. Thanks, compressor is still in box so it's getting returned.
Title: Re: Need help with a LG LinearCompressor
Post by: quada on April 09, 2021, 04:02:23 PM
Also trying to replace FC75LBNA but in a 795.71033.010 manufactured in 2013 with a EBR65640204 PCB.  From the sounds of it I will need a new PCB flashed with the new software. Would anyone be able to point me in the right direction to finding which PCBs would be compatible with the FLS075LANA replacement compressor?

When I look that fridge up on searspartsdirect it shows compressor is
Refrigerator Compressor TCA36411702 that is the FC75LANE
So somebody probably put the wrong compressor in your fridge and possibly blew the inverter.
The inverter board is Refrigerator Compressor Control Board EBR64173902


houptee, I think the searspartsdirect site may be wrong??  George227 also had a FC75LBNA compressor in his 795.71033.010 fridge -- https://lgcommunity.us.com/discussion/16743/glenn-m-george (https://lgcommunity.us.com/discussion/16743/glenn-m-george).  I also found a reddit post where someone stated there was a FC75LBNA in their 71033 fridge as well.  That would be odd if all of us had the wrong compressor put in our fridge.  I'm pretty sure that the compressor in the fridge I have has never been replaced.  Now I'm somewhat lost on what to do.  Do I get a replacement FLS075LANA and try to find a new PCB that will work with it??  Not sure how I would choose which compressor PCB to go with though??  Or do I go the route of the searspartsdirect and get a FC75LANE compressor with a LxNE compatible compressor board (EBR64173902???) to go with it???
Title: Re: Need help with a LG LinearCompressor
Post by: houptee on April 09, 2021, 07:29:00 PM
Strange because Searspartsdirect Appliancepartspros and Repairclinic all show the TCA36411702 aka FC75LANE as the compressor for the Kenmore model number you have.


Do you have 2 separate control boards because the LANE has a inverter board separate from the main logic board.


The A models went to one big board on the back of fridge with large Capacitors down near the bottom of the board, that is the inverter section built into the main logic board.


So if you can post a pic of the board on the back of fridge maybe can identify what is going on.
Title: Re: Need help with a LG LinearCompressor
Post by: houptee on April 09, 2021, 07:51:09 PM
If you don't want to spend time and money on it anymore the big appliance sales will start around tax return week.
Lowes has a nice 26.6 cu ft french door by Hisense that uses the newer r600 refrigerant and it has been on sale in the past for $1300.
It is also sold by BestBuy but branded as Insignia for them.
I have come to realize these 3k and up fridges are just a bad investment they all have major problems so if you buy a new 1300 fridge and it dies after 6 yrs it doesn't hurt as much to junk it.
Title: Re: Need help with a LG LinearCompressor
Post by: quada on April 09, 2021, 08:26:13 PM
Strange because Searspartsdirect Appliancepartspros and Repairclinic all show the TCA36411702 aka FC75LANE as the compressor for the Kenmore model number you have.


Do you have 2 separate control boards because the LANE has a inverter board separate from the main logic board.


The A models went to one big board on the back of fridge with large Capacitors down near the bottom of the board, that is the inverter section built into the main logic board.


So if you can post a pic of the board on the back of fridge maybe can identify what is going on.

See this link for a picture of the boards I have: https://imgur.com/a/W2rw1XV (https://imgur.com/a/W2rw1XV)

The top board is what I am assuming is the compressor inverter board is model number EBR65640204.
The bottom board is EBR650027 or EBR65002716, not sure if you include the big numbers.  I assume this is the main logic board.

If you had a choice between the FC75LANE and the FLS075LANA which one would you choose?  Do I even have the option of going the FC75LANE route with a *NE compatible PCB?  Would any compressor inverter PCB work with the main logic board I have?

I understand your note about the $1300 new models but I would like to try to fix the one I have.

Title: Re: Need help with a LG LinearCompressor
Post by: houptee on April 09, 2021, 08:27:25 PM
Does the board you have in the fridge look like this one shown on searspartsdirect EBR64173902?


If you look closely at the picture it has a small red decal on the board that says FC75LANE



If yes then you cannot flash that board it is only used for the E compressors FC75LANE and someone must have worked on the fridge and put a A type compressor in it.
Did you have this fridge since it was new do you know the history of it?

https://www.searspartsdirect.com/product/1iq11z5ofl-0046-795/id-EBR64173902 (https://www.searspartsdirect.com/product/1iq11z5ofl-0046-795/id-EBR64173902?sid=pla:ggl:EBR64173902:pla-293946777986&gclid=CjwKCAjw9r-DBhBxEiwA9qYUpUw6r9hpz9JlVw-tDGQukIkv0HSlgntEpphO3eFneKoDdPYTN5IBSBoCX_QQAvD_BwE)
Title: Re: Need help with a LG LinearCompressor
Post by: quada on April 09, 2021, 08:42:57 PM
Does the board you have in the fridge look like this one shown on searspartsdirect EBR64173902?


If you look closely at the picture it has a small red decal on the board that says FC75LANE



If yes then you cannot flash that board it is only used for the E compressors FC75LANE and someone must have worked on the fridge and put a A type compressor in it.
Did you have this fridge since it was new do you know the history of it?

https://www.searspartsdirect.com/product/1iq11z5ofl-0046-795/id-EBR64173902 (https://www.searspartsdirect.com/product/1iq11z5ofl-0046-795/id-EBR64173902?sid=pla:ggl:EBR64173902:pla-293946777986&gclid=CjwKCAjw9r-DBhBxEiwA9qYUpUw6r9hpz9JlVw-tDGQukIkv0HSlgntEpphO3eFneKoDdPYTN5IBSBoCX_QQAvD_BwE)


I did post a picture of the boards a few minutes before your post, my posts just have to get approved manually by a moderator so they might be a little delayed.  My board has an orange sticker that says FC75LBNA NTC on it.
Title: Re: Need help with a LG LinearCompressor
Post by: breezee361 on April 09, 2021, 10:29:39 PM
So I have a kenmore/lg refrigerator model number 795.51833.411 and I replaced the compressor with a new one however it is not an LG compressor if I'm not mostaken I think it is an embraco is it possible to run this compressor after I program the board with that pcb programming tool.? Or are LG compressors only go in LG refrigerators.?
Title: Re: Need help with a LG LinearCompressor
Post by: houptee on April 09, 2021, 11:30:15 PM
Try reading this LG manual pg 56 they start talking about A or E inverter so apparently they did have 2 versions and 2 compressors in the same model fridge!!


I would order the same part numbers you have now and same compressor since it was working before it broke.


See if this link lets you download the manual


https://www.applianceblog.com/mainforums/attachments/lfx28978-lfx25978-service-manual-pdf.31562/
Title: Re: Need help with a LG LinearCompressor
Post by: houptee on April 10, 2021, 06:58:32 AM
So I have a kenmore/lg refrigerator model number 795.51833.411 and I replaced the compressor with a new one however it is not an LG compressor if I'm not mostaken I think it is an embraco is it possible to run this compressor after I program the board with that pcb programming tool.? Or are LG compressors only go in LG refrigerators.?

No you cannot run Embraco with a LG inverter controller because LG only uses 2 pins on the compressor the other pin is not connected to anything.  Embraco has all 3 pins to a winding and uses 3 phases to operate. Totally different type of motor inside each.
Title: Re: Need help with a LG LinearCompressor
Post by: Usertrojan on April 12, 2021, 05:35:16 PM
NOTE:When servicing an LG fridge that will have the compressor replaced with their new Universal Compressor (TCA38091801), control boards manufactured prior to 2014 WILL NOT WORK with the update jig. This means that any fridge made 2013 and prior must have the control board replaced AND reprogrammed with the jig before running the compressor. Failure to do this will result in a dead compressor which must be replaced again.

Apologies for bringing up this older post; however, I have a customer with a # LG Refrigerator who needs the new universal compressor and (based on this) also is in need of an updated control board.  My question is, do all the control boards need to be replaced or just the main control board (EBR73304210) and then flashed?  I'm hoping it is just the main control board.

Cheers,
RE5513

Hi Houptee,

I'm in this situation: I bought and installed the FLS075LANA, got the software upgrade jig and when I connected to the PCB (ERB7334210) nothing was happening (was not identifying the compressor model#). Based on your note and more research, I learned that my PCB was built on December 2012 and does not have the boot program, therefore cannot be updated.

My question: I understand I need to buy a new PCB, but do I need look for the exact PCB model (ERB7334210) or can I update with a different model like ERB789405 for example?

Thanks
Title: Re: Need help with a LG LinearCompressor
Post by: houptee on April 13, 2021, 10:33:25 AM
Usertrojan did you buy a compressor that has the red decal on top warning about software update?
That is the newest compressor and what you want to install.
It needs the software updated or it will damage the compressor.

This discussion got a bit confused because some of the other posts they have the older LG design with 2 separate boards, one main logic board and one compressor inverter board.

If you have the fridge with one large board on the back with large capacitors near the bottom then you must update those large boards when you install the newest version compressor that has the red decal on top.

Look up your model on the parts search link at top of the page for appliancepartspros.com and it should give you the newest main board part number. Or check other parts sites like searspartsdirect, encompass, repairclinic, etc to confirm that all show same part number for the main board.
Title: Re: Need help with a LG LinearCompressor
Post by: Usertrojan on April 13, 2021, 04:00:55 PM
Thanks for the response. 

Yes, I have the red decal on the new compressor and model # is FLS075LANA.
Yes, I have the fridge with one large board with the large capacitor on the bottom.

I can't find the PCB part# (ERB7334210) anywhere on those suggested sites.  I see them on Ebay but the build# is before 2014 so I know I can't use them.  I also see PCBs with different model#s that visually look the same as the one I have now but just don't know if I can just use them... any other suggestions?  sigh... should've just bought a new fridge to begin with!
Title: Re: Need help with a LG LinearCompressor
Post by: houptee on April 13, 2021, 07:11:58 PM
Look up the board by putting the fridge model number and then use the diagrams and find the main board in the list and see what part number it says is the current part number for that fridge.
It might show a new part number and then a notation > (replaces old # you have now).
Title: Re: Need help with a LG LinearCompressor
Post by: houptee on April 13, 2021, 10:19:11 PM
Official LG training video for the software update procedure:

https://youtu.be/Z5oMBH3CSK0
Title: Re: Need help with a LG LinearCompressor
Post by: houptee on April 14, 2021, 08:47:11 AM
He shows 3 LG main boards and 3 jigs with different versions of the firmware on each jig.
The 8.3, 8.5,  and  8.7 firmware is on his jigs but the update would not work with the 8.5 version so then he used 8.7 and it worked.

So possibly 8.5 version has a glitch and they fixed it with the newer firmware 8.7.

https://youtu.be/55cjX5uRO9c
Title: Re: Need help with a LG LinearCompressor
Post by: Usertrojan on April 14, 2021, 11:02:40 PM
Look up the board by putting the fridge model number and then use the diagrams and find the main board in the list and see what part number it says is the current part number for that fridge.
It might show a new part number and then a notation > (replaces old # you have now).

Okay thanks.  I will try that.