Author Topic: LE code  (Read 3274 times)

Offline Rayfacci

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LE code
« on: August 17, 2011, 11:33:13 AM »
Due to the fact that I am posting, you can assume I have exhausted every option thus far.
I have visually inspected all wires from the control board to each motor, pump, control, etc.
I have removed down to the macerator, which was clean and in the right direction.
I have removed pump and motor, both shafts move freely.

Does anyone have an idea?

I was thinking since many people have had success with fixing the broken wire in the adhesive defect, maybe the wire may have resistance through it? How can I check properly the volts or ohms in the dw, I do have a voltmeter. Thanks
Ray

Model LDF7811ST


Online wildimaginations

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Re: LE code
« Reply #1 on: August 17, 2011, 12:02:22 PM »
Find the connection between the motor and the control board and use your meter to make sure that you have good continuity.  It is possible that the wire harness may be bad.

Hope this helps.
Appliance Service Technician
Authorized servicer on LG appliances.
About 45 mins east of San Francisco

Offline Rayfacci

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Re: LE code
« Reply #2 on: August 17, 2011, 02:34:21 PM »
Thanks for the help.
I checked continuity to all wires, they are all intact.
I also wired the drain pump and motor assembly briefly with a direct hook up to a wall outlet and the shafts spin.
Do I assume at this point that PCB is at fault.
It may be a point of interest, I have never replaced any parts to date and the dishwasher is 6 yes old 1 owner
Thanks

Offline Rayfacci

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Re: LE code
« Reply #3 on: August 18, 2011, 09:05:57 AM »
Wild, thanks for the response but now I have a parts question.
If I want to control the PCB due to a LE code, what part number on the exploded view do I need to buy? K251, 252, or 253.
Also if i need to buy 251, my serial number(starts out 501kw) does not match the referenced list. If you go to the exploded diagram it will make sense.
Thanks for the help

Online wildimaginations

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Re: LE code
« Reply #4 on: August 18, 2011, 11:09:27 AM »
Depending on the serial number, you have 3 choices.  The location number is K251.

If you want to be sure, pull the control panel assembly and look for the part number on the control board.  It will start with 6871---.  You will probably have an older version number so that's ok.  When you order that number, they will give you the updated part number.

Before you order the part, need you to check the motor to make sure that it's ok.  If you look at the wire connections to the motor.  3 of the connectors are bigger than the rest.  The first connector is  your white common.  Test point between 1 and 2  and  1 and 3.  Make sure you have continuity in those two connections.  It's possible that your motor may have an open short that doesn't allow the electricity to run the motor.

Good luck.
Appliance Service Technician
Authorized servicer on LG appliances.
About 45 mins east of San Francisco

Offline Rayfacci

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Re: LE code
« Reply #5 on: August 18, 2011, 02:08:12 PM »
I pulled the PCB and the number is 6870ed9001a.
I have found according to Repairclinic website only 1 PCB that has a close resemblance: it is AP4439539. These guys offer 4 PCBs for my model... The number mentioned is close but still is missing a small capacitor in the corner.

Also, I checked continuity and there is continuity between 1 and 2 and 1 and 3.
I really can't fathom it's the PCB, since nothing else has failed in the past, but everything according to my newbie skills proves otherwise.
Thanks
Ray

Online wildimaginations

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Re: LE code
« Reply #6 on: August 18, 2011, 07:47:17 PM »
That's not the correct part number.  The correct part number starts with a 6871...

It is usually on the board encased inside the plastic acrylic.

I believe the correct part number you need is 6871DD1014A if your serial number begins with 501.
Appliance Service Technician
Authorized servicer on LG appliances.
About 45 mins east of San Francisco

Offline john63

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Re: LE code
« Reply #7 on: August 18, 2011, 10:30:46 PM »
Rayfacci

Replace the SUMP ASSY (AJH31248604)

Using electrical tape---wrap the wire loom inside the door from the bottom of the door up to the detergent dispenser assy.

Add a small section of cardboard between the taped wire loom & the black tar material. Re-install the door panel.

Offline Rayfacci

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Re: LE code
« Reply #8 on: August 25, 2011, 10:23:04 AM »
Well I replaced the PCB 6871dd1006E and I get the same damn results- LE code... Very frustrated.

If I already disconnected the pump and motor and gave them power externally ( shaft and impeller both rotate) does this mean the parts could still be bad? Thanks for the help

Online wildimaginations

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Re: LE code
« Reply #9 on: August 25, 2011, 10:35:06 AM »
Since you have already replaced the control board, there are only 2 other parts that can be at fault.  Either sump assembly or the wire harness.  Since you checked the wire harness and you say it's ok, then it would have to be the sump assembly.  The part number is AJH31248604.
Appliance Service Technician
Authorized servicer on LG appliances.
About 45 mins east of San Francisco

Offline Rayfacci

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Re: LE code
« Reply #10 on: August 25, 2011, 10:40:38 AM »
Also now when I press rinse and delay start together while turning the unit on I get: n:3H then blinks to U:04
does this meaning something? It appears to be in a diagnostic mode

Offline Rayfacci

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Re: LE code
« Reply #11 on: August 25, 2011, 11:03:57 AM »
Wild and John thanks, however do I need to buy the whole assembly or can I just buy the motor or sump

Offline john63

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Re: LE code
« Reply #12 on: August 25, 2011, 07:48:36 PM »
<<<Well I replaced the PCB 6871dd1006E and I get the same damn results- LE code... Very frustrated.>>>

*******

That usually happens when someone sends you on a wild goose chase:)

Perform the following...and you're done:

Rayfacci

Replace the SUMP ASSY (AJH31248604)

Using electrical tape---wrap the wire loom inside the door from the bottom of the door up to the detergent dispenser assy.

Add a small section of cardboard between the taped wire loom & the black tar material. Re-install the door panel.

*******

<<<when I press rinse and delay start together while turning the unit on I get: n:3H then blinks to U:04
does this meaning something?>>>

*******

Not relevant---this is a factory check code (Software Version Numbers).


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