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- > Do-It-Yourself Appliance Repair Help > The Laundry Appliance Repair Forum > Kenmore HE2 - model # 110.46472501 F29 failure code (F28 Code and test)

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Kenmore HE2 - model # 110.46472501 F29 failure code (F28 Code and test)  Rate Topic 
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 Posted: Sun Oct 24th, 2010 04:45 pm
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GMHilltop
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Note:
Reposted to correct area
;
Final error code corrected (it's F28 Not F29)

Original post:

Using the Diagnostic test that comes with the owners manual (Part No. 8540259 Rev.A)

The diagnostice test shows historical codes:
F29 - Door unlock Error
&
F28 - The communication between the Central Control Unit (CCU) & the Motor Control Unit (MCU) cannot be sent correctly.

We'll Check the harness connections, but does someone have the service Manual Ohm Readings that are required to confirm that the Switch (Door Latch) is still functional?

Are there Tests we can do with the CCU (Ohm readings etc) to confirm that it is still ok?

=============

Also, could someone clarify this for me please:

After the above test is done (which is displaying the historical codes that have been recorded) the system goes into a "Diagnostic Test" Mode.

The Red "Door Locked" light comes on, and the "Drain & Spin" Cycle LED light flashes for 3 Minutes 15 Seconds, and the system flips to Failure Code F28 and all Cycle LED lights flash.

When we start the Diagnostic test Manually, we are supposed to be able to advance to the next step of the test procedure.  We haven't been able to make the system do that.

The Question:  If the test is recognizing a Failure code, will it prevent the system from advancing to the next test procedure?

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 Posted: Sun Oct 24th, 2010 05:07 pm
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RegUS_PatOff
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110.46472501 Tech Sheets



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 Posted: Mon Oct 25th, 2010 12:08 am
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GMHilltop
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Thanks RegUS PatOff, but I already have that document.  It is what came with the Washing machine itself.

What I was looking for specifically is the Ohm readings (if any) so that I can confirm the part has actually failed (outside of the diagnostic test).  Can this be done for the CCU - anyone?

I'd like to avoid replacing parts unnecessarily.

On a side note, all harness connections are solid and don't appear to be the problem.

If anyone has the Ohm readings for testing the door latch out of the system, that would be appreciated as well.

Thanks.

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 Posted: Mon Oct 25th, 2010 12:21 am
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GMHilltop
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Are both of the Ohm readings for the Door latch supposed to be "60" . . . (that is 60 ohms between both the 1+3 and the 1+2 connectors?

I am assuming this information is correct as I found some of the implied information here:

http://applianceguru.com/forum2/16011.html

Thanks

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 Posted: Mon Oct 25th, 2010 12:30 am
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from the Duet Service Manual
 

                              Test Points             Reading
Unlock Solenoid         3 to 2                 60 ohms
Lock Solenoid            3 to 1                 60 ohms

                        (doesn't seem correct)
                        (lock should be 1 to 2)



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 Posted: Mon Oct 25th, 2010 11:10 am
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Budget Appliance Repair
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Whirlpool Duet "SPORT", or Kenmore HE2 models, if you have either the front or rear access panels off the ground switch for that respective panel will be open, thus an open grounding loop and you will always get F28 error.

When testing with the panels off you must tape the grounding switch closed when testing or you will get the F28 error.   I remove the switch from the frame mount, just have to push little locking tab in to slide switch out of mounting, then wrap electrical tape around the switch to keep it closed.

If you have the switches bypassed and are still getting the F28 error you must check the grounding loop and make sure it isn't loose or broken anywhere along it's path.

If all grounding loop is OK and still getting F28 then I believe you would need to replace CCU.



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 Posted: Mon Oct 25th, 2010 11:17 am
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RegUS_PatOff wrote: from the Duet Service Manual
 

                              Test Points             Reading
Unlock Solenoid         3 to 2                 60 ohms
Lock Solenoid            3 to 1                 60 ohms

                        (doesn't seem correct)
                        (lock should be 1 to 2)

The Whirlpool Duet SPORT is different then the standard Whirlpool Duet.

The Kenmore HE2 models are the Whirlpool Duet Sport, different then the Kenmore HE3, HE4 and HE5 models.

The standard Duet and the Duet SPORT both use a different door latch/lock assembly.



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William Burk (Willie)
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 Posted: Mon Oct 25th, 2010 01:38 pm
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RegUS_PatOff
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Budget Appliance Repair wrote: RegUS_PatOff wrote: from the Duet Service Manual
 

                              Test Points             Reading
Unlock Solenoid         3 to 2                 60 ohms
Lock Solenoid            3 to 1                 60 ohms

                        (doesn't seem correct)
                        (lock should be 1 to 2)

The Whirlpool Duet SPORT is different then the standard Whirlpool Duet.

The Kenmore HE2 models are the Whirlpool Duet Sport, different then the Kenmore HE3, HE4 and HE5 models.

The standard Duet and the Duet SPORT both use a different door latch/lock assembly.


:headscratch:

Both Service Manuals mention Pins 1 to 3 and Pins 2 to 3  should be  60 OHMs

but both wiring diagrams, and also the tech sheet, show Pin 2 as common.



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