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Kenmore HE2 Plus--F-28 error code  Rating:  Rating
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 Posted: Thu Apr 16th, 2009 12:33 am
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bkmomto3
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Hi!!!

Washer model number is:  110.47512600

Error code is F-28.  Lights on are 1) Rinse  2) Spin 3) Clothes Clean

We have the troubleshooting guide and dh has checked everything that is suggested.  We also replaced the CCU, so that's been covered. 

Do we need a new MCU?

 

Thanks!!!
Bonnie

Last edited on Thu Apr 16th, 2009 01:05 am by bkmomto3

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 Posted: Thu Apr 16th, 2009 01:51 am
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110.47512600 Tech Sheets
(for reference)

Did you do the recommended CCU Operations Diagnostic test ?



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 Posted: Thu Apr 16th, 2009 02:16 am
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bkmomto3
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Yes, and it wouldn't go beyond the door switch test.  There was no water nor drum rotation.  
 

Bonnie

Last edited on Thu Apr 16th, 2009 02:18 am by bkmomto3

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 Posted: Thu Apr 16th, 2009 02:18 am
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did it pass the Door Switch test ?



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 Posted: Thu Apr 16th, 2009 02:19 am
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We don't know because we heard it click and then another click that sounded like the MCU.  Nothing happened, though.

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 Posted: Thu Apr 16th, 2009 02:27 am
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and the Door locked ?



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 Posted: Thu Apr 16th, 2009 02:35 am
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Yes and the door lock light came on. 

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 Posted: Thu Apr 16th, 2009 02:43 am
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sorry, I don't know ..

 maybe someone else or one of the other Masters on here will respond ...



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 Posted: Thu Apr 16th, 2009 02:46 am
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Good to know I am not the only one stumped...

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 Posted: Thu Apr 16th, 2009 02:54 am
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Dunno, sort of sounds like the door lock assy is not sending info to the ccu that is is locked, do you have power back to the ccu from the door lock assy?



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 Posted: Thu Apr 16th, 2009 03:36 am
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try unplugging the machine and then disconnecting the MI3 edge connector on the CCU. plug the machine back in and try to start it....if it starts up then you have a bad MCU

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 Posted: Thu Apr 16th, 2009 03:53 am
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Can hear the selonoid click.  Door lock light lights up.  Nothing happens.  Add Garmet light is lit.  Error code reads F-28. 

Getting ready to head to bed.  Will check back for suggestions tomorrow.  Thank you.

Last edited on Thu Apr 16th, 2009 03:56 am by bkmomto3

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 Posted: Thu Apr 16th, 2009 04:31 pm
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We're online again.  If anyone has any suggestions, please pass them on. 

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 Posted: Thu Apr 16th, 2009 05:34 pm
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When we unplugged the connector the same fault condition occured, so there was no change in how it has been behaving.  The door locked, light came on for door lock, a faint click from the interior then nothing.  After a few minutes the dial lights light up and f-28 flashes. 

I have unplugged every connector, ohmed out all swithces and the motor windings, all good according the Maytag service manual.  I am at a loss...

This happened when I was away, but the original fault was the machine hung on a cycle with 1 minute left on the timer.  My wife and son tried to stop the cycle but the machine would not allow the door to unlock.  This is stil the case, if I turn on a cycle the door lock solenoid energizes, you can hear the loud click of the lock engaging, the light comes on for door lock, then nothing.  A few seconds later a faint click is heard from in the machine and then nothing for a few minutes till the dial lights come on and f-28 is displayed.  We can not get the door to unlock, it hangs up.  We then unplug the machine and release the lock manually. 

 

HELP!!!!!!

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 Posted: Thu Apr 16th, 2009 10:18 pm
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could be ccu or mcu. most likely the mcu



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 Posted: Thu Apr 16th, 2009 10:25 pm
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I replaced the ccu, is there any way to verify it is the mcu?  The ccu cost me $200.00 + and the mcu is looking like another big chunk of change...  Want to make sure I don't spend more repairing this thing than it is worth. 

Last edited on Thu Apr 16th, 2009 10:29 pm by bkmomto3

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 Posted: Fri Apr 17th, 2009 02:45 am
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 Posted: Fri Apr 17th, 2009 11:02 am
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Are you sure you don't have a bad door lock switch.

If the door lock/latch assembly is anything like the other HE?T machines and Whirlpool Duets, you could have a bad coil on the unlock solenoid.

Thus you hear door lock and light comes on then hears light click from another relay in CCU but door doesn't unlock and error code pops up.

The normal HE?T models and Duets have a sequence that has to complete to let the CCU know everything is operating correctly and that it's getting the correct signals back.  One of these sequences is to lock and unlock the door and check the switch status after each attempt to make sure it can infact lock and unlock.

I don't know what the F28 code means but if it has anything to do with the door lock then I would sure be checking in that area.

Last edited on Fri Apr 17th, 2009 11:04 am by Budget Appliance Repair



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 Posted: Fri Apr 17th, 2009 02:46 pm
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I measured the coils per the manual and had 1-2 = 60 ohms, 2-3 = 60 ohms and 1=3 = 120 ohms. 
If two is the common between the coils, then the coils are good, it makes a loud click as the coil engages and the door latches.  Just never get the command to unlatch.

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 Posted: Fri Apr 17th, 2009 04:08 pm
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The coils could be good , it is not closing a contact in the switch assy.... Page 13, unplug DS2, close door, start unit, continuity thru switch?? plug DS 2 back in..   Unplug DLS2, push start, continuity thru switch?? The wiring diagram does not indicate if the unit is at rest for switch open/close...some thing to try.......................keep us posted...............

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