Question about Whirlpool WFW8500SR

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Code F28 error

I just bought a WFW8500SR and in the middle of the cycle sstops and show F28

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F28 error is..
The communication between the Central Control Unit (CCU) and
the Motor Control Unit (MCU) cannot be sent correctly.

Possible Causes/Procedure
1. Unplug washer or disconnect power.
2. Check wire harness connections to the MCU, the motor, and
Central Control Unit (CCU).
– Check connections of the CCU board within the housing.
– Make sure all grounding switches are engaged.
3. Check the drive system for any worn or failed components.
4. Plug in washer or reconnect power.
5. Verify CCU operation by running a Diagnostic Test or any
cycle.
6. Check the MCU by looking for operations of the drive motor.
7. Check the drive motor for powered rotations.
8. Check that the serial harness at the MCU is not mounted
upside down. The wires should be to the left when facing
the MCU connectors

If it is new call for service...

Posted on Aug 15, 2008

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1 Answer

Washing stops in cycle with an F28 code.


Hi

This code indicates an electronics communication problem with the washer.Please check this link to get a detailed idea related to the lists of codes and the resolutions to them:-

http://whirlpool.custhelp.com/app/answers/detail/a_id/2885/~/display-shows-an-error-code---front-load-washer

The error code F28 means one or both of these parts are bad.
Motor Control Unit ,Microcomputer Machine Control Unit .
It would be a good idea to order both, as both components have been problematic for error code F28.

Please get back to us if you have further query or else please accept the solution.

Thanks for contacting fixya.com


Sep 02, 2011 | Whirlpool Washing Machines

2 Answers

My Whirlpool Duet Front Load Washing Machine is showing a F28 error. What does that mean?


F28 is a communication error which usually means there is a connection that has come loose. Removing the top and unpplugging and replugging the connectors in will fix 75% of these codes. If the bottom toe panel is not on it will also give you an F28
  • Unplug or turn the circuit breaker off for 30 seconds.
  • Reconnect the unit to the power source by turning the breaker back on or plugging the unit back into the wall outlet.
  • Press the Pause/Cancel/Stop button twice to clear the display.
  • Start a short cycle to check the operation of the machine by selecting a cycle and pressing and holding the start button until the machine starts if you have any further questions message me back and please remember to rank how this opinion has helped in your appliance situation when our chat has concluded Thanks again Rick
  • Jan 16, 2011 | Whirlpool Duet GHW9150P Front Load Washer

    1 Answer

    I washed a large load in our Whirlpood Duet Washing Machine and it stopped with a flashing F28 code. I unplugged it for 5 minutes and it still will not run a cycle without stopping with a flashing F28...


    The error code F28 means one or both of these parts are bad.
    Motor Control Unit (8540135)
    Microcomputer Machine Control Unit (8540788)
    It would be a good idea to order both, as both components have been problematic for error code F28

    If you find either the MCU or the CCU(Microcomputer Machine Control Unit) fixed it.

    You can download the online repair manual in the below link

    https://secured.whirlpool.com/Service/SrvTechAdm.nsf/2cd44500d572193285256a45004fd9d6/6545d78b3f479480852571650061b1ba/$FILE/8178558.pdf

    On page# 4-20 it shows how to access your MCU.

    Jun 27, 2010 | Whirlpool Duet GHW9150P Front Load Washer

    2 Answers

    It was putting out a error code of f28 I changed the main board on the inside of the washer no it wont run the last spin cycle but it will do every thing else was there anything else I was supposed to do...


    F28 error means the CCU(central control unit) lost communication the the MCU(Motor control Unit) for an HE2 washer.
    I would look inside the lower front panel and get the tech sheet and run a diagnostic test per the instructions... See what comes up. Review troubleshooting for the F28 make sure you did not miss anything.
    I hope this helps

    Mar 20, 2010 | Kenmore HE2 Plus Front Load Washer

    1 Answer

    Kenmore HE5 error code F28 on spin cycle


    F28 is a serial bus error from the CCU (Central Control Unit) to the MCU (Motor Control Unit).

    All you need is some Electronics contact cleaner spray and a 1/4 inch socket to remove the top of the machine and the back of the machine.
    The CCU is the computer looking box at the top front right hand corner.
    Find connector M13, (has red marking on it and only 3 wires) disconnect it by pushing the retainer tab back and pulling gently on the connector.
    Spray the contacts of the connector and computer with connector cleaner.
    Then re-assemble connector.
    The MCU is in the back lower left corner.
    Find the connector with 3 wires and red mark, and remove this connector in the same way you did the other, spray it and re-install.
    Put the back and top back on.

    Thanks for using FixYa - a 4 THUMBS rating is appreciated for answering your FREE question

    Feb 25, 2009 | Kenmore Elite 45986 Front Load Washer

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    Error code f35 on my washer


    The following list of codes indicates an electronics communication problem with the washer:
    Duet HT® washer - F01, F03, F06, F11, F23, F24, F27, F28, F29, F30, F31, F32, F35, F42, F61, F62, F63, F64, F65, F70, F71, and F99
    Duet® washer - F05, F07, F09, F10, F11, F13, F14, F15, F21, F22, and FdU
    Duet SportTM washer - F01, F11, F23, F24, F27, F28, F29, F30, F31, and F33

    To remove the error display, press Pause/Cancel twice.

    If Pause/Cancel does not work:
    1. Unplug washer or disconnect power for one minute.
    2. Plug in washer or reconnect power.
    3. Re-select the cycle and press Start.
    NOTE: If the error remains on the display, call for service.

    Dec 19, 2008 | Whirlpool Duet GHW9150P Front Load Washer

    1 Answer

    F28 error


    F28 is a communication error which usually means there is a connection that has come loose. Removing the top and unpplugging and replugging the connectors in will fix 75% of these codes. If the bottom toe panel is not on it will also give you an F28.

    Jul 18, 2008 | Whirlpool Duet GHW9150P Front Load Washer

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