Question about Whirlpool Washing Machines

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Self diagnostics im 3 ccu boards in on a whirlpool washer repair F28 error machine will NOT step threw self diagnostics no matter gow you try it . machine gets stuck on step 1 CO which is lock the door. I believe im getting bad boards. model# wfw9400sw01

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  • sienemesis Oct 31, 2013

    ive tried 6 ccu boards now they all do the same thing ive been fixing appliances since 2004 this is not my first rodeo. is there anything thing else it can be? ive checked everything. ive had 3 bad boards in a row once on a dishwasher so I guess its possible to have more

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  • Contributor
  • 24 Answers

This sound like defective boards or the boards are not being hoked up correctly causing them to short/melfunction

Posted on Oct 22, 2013

Testimonial: "ive tried 6 ccu boards now they all do the same thing ive been fixing appliances since 2004 this is not my first rodeo. is there anything thing else it can be? ive checked everything. ive had 3 bad boards in a row once on a dishwasher so I guess its possible to have more"

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4 Suggested Answers

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SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

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SOURCE: Duet Sport HT WFW8400TE Washer: hello i have a whirlpool duet we originally had an...

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I had same error code F11 and DL.....I sprayed the door lock (inside) with WD40......so far works OK

I had the same F11/DL problem. I tighten the two screws on the door latch and it's working great. for now

Just some part numbers to help if you need to order parts. For the GHW9200LWO Washer (Sanitary Cycle Model)- the part number for the CCU (Microcomputer or main computer) is 8181924. The part number for the Motor Control Unit (MCU) is 8182706. I did a search for the part numbers and found the CCU for $79.90 shipping included - the same part from Whirlpool was $190 plus with shipping included. I put the CCU on and my washer works perfectly again. Hope this helps someone since I had such a hard time finding out the correct part numbers. Whirlpool first sent me the MCU even though I specifically told them it was not that part but the CCU.

DL is a door lock error. This is usually an indication of a bad door latch. F11 is a serial communications error from the Central Control Unit CCU (which is your main computer). If the door latch is defective it could be generating the communications error code as well. A defective CCU can also give the same symptoms, though. Before replacing any parts, however, double check all you connections to make sure you don't have any loose wires. The least expensive of the two possible solutions would be to replace the door latch (about $50). The CCU can run between $150 and $250. Hope this leads you in the right direction.

I wanna thank all of you for your input. I had the "DL F-11" code also. My washer would run 12 minutes and then stop with the annoying beep and error codes. After learning that the "DL" was the door lock, I decided to order the part online for 50 bucks. After I placed the order I decided to take this $50 thing apart and give it a look-see. (Boys like to tear things apart!)
There is a solenoid inside that actuates the lock. My finding was that there was some hardened goo that seeped out of the solenoid. It didn't look good! I believe this to have caused an electrical imbalance that the computer didn't like, thus sending it into error mode.
Removal and installation was a snap. First I took the top off. Then to make room for my arm to get to the door-lock, I pushed the drum all the way back and held it in place by wedging a shoe in the front end. Then I pushed the drum to the side, opposite the door-lock, and wedged it with another shoe. This gave me plenty of room to reach the door-lock. Unplug the three connectors and remove the three screws from the front side of the door-lock. (Inside door at 2:00.)
Reverse order for the install!
Thanks again for your posts which led me in the right direction!

Posted on Jun 13, 2010

Jahn27
  • 1554 Answers

SOURCE: I have a Kenmore HE2

Let's focus first on error codes F22 and F26. Error code F22 is door lock fault and it flashes when the door lock fails to activate after 6 attempts while F26 flashes when the door switch is opened for more than 5 seconds while the door is locked or when the door is not opened after 3 consecutive cycles. Since you cannot do 3 consecutive cycles without opening the door, this may indicate that the door switch contacts are welded together. But both error codes may also indicate a malfunctioning CCU or any other component such as the motor controller unit (MCU).

Disconnect power then start troubleshooting the machine by disconnecting the MCU wire harnesses (MI3 and MS2) from the CCU then reconnect power and start the machine. If error codes F22 and F26 go away, then the MCU must be the culprit, replace it. If the error codes do not go away, disconnect power then test the continuity of the terminals of door switch harness DS2 both with the door open and close. It must have continuity, if the door lock and switch assembly is good, when the door is close and none when the door is open. Also test the continuity between the terminals of connector DS2 on the CCU and it should read open.

Proceed with the troubleshooting of the door lock switch and solenoids if the door switch contact is open when the door is open and close when the door is close. Disconnect power then disconnect the door lock switch harness from connector DLS2 on the CCU. Jump a wire between the terminals of DLS2 on the CCU then close the door firmly. Reconnect power then start the machine.

Post back the result of the tests and your observations about the behavior of the machine as you do the tests. It will help determine which part is causing the problem.

Please make sure you accept the solution which you found the most helpful and informative. Failure to do so will automatically give credit to the last solution viewed no matter how unhelpful and non-informative it is. Accepting a solution will not prevent you from communicating with the expert at no further cost. You can still post clarifications and follow-up questions as long as you need further assistance regarding the problem stated herein.

Posted on Nov 03, 2010

Jahn27
  • 1554 Answers

SOURCE: Kenmore HE2 stopped mid-cycle. When

This appears to be a problem with the MCU and not the CCU as what has already been found. First, make sure the serial communication connection between the MCU and the CCU is intact, clean, and snug fit. But it seems that you have done all that. The one and simple way to determine whether it is the MCU or CCU is disconnecting the serial communication connection between the two then starting the machine or running the diagnostic test.

The problem is indeed the MCU if the machine seems to work fine with the MCU disconnected except for motor powered functions or the diagnostic test progresses successfully but eventually flashes F28 code (or any other code pertaining to a motor or MCU problem) after the dispenser motor, dispenser contact, hot water inlet valve, and pressure switch test or when the test enters the MCU and motor tests. Replace the MCU then. The problem is the CCU or both if the machine still behaves the same after the MCU is disconnected. Replace the CCU then the MCU if the machine behaves the same after the CCU is replaced. This troubleshooting technique has worked for me all the times the symptoms are like yours and it turned out to be the MCU.

You don't have to accept or reject this post in order to add comment or information. But accepting the solution should you find it helpful and/or informative will not stop you from posting comments or additional information. You can still communicate with the expert should you need further advice regarding the issue stated herein.

Posted on Aug 13, 2011

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1 Answer

Whirlpool f28 error code and door lock light


For the F28 error code:
First, check the wiring harness connections to the MCU, the Motor, and the CCU. Make sure all the connections are tight and there are no ground wires off. Then check the connections of the CCU board within the housing.

If the wiring connections are fine then It would be a good idea to order both, as both components have been problematic for the error code F28.
Here is a link to the CCU.
Here is a link to the MCU.

Oct 13, 2012 | Whirlpool WFW8300SW

2 Answers

I had a short power outage and then my washer gave an error code of F28 and now I can't get it to work. Please help


F28 is a s error from the CCU to the MCUUnit.

remove the lid and the back of the machine.

CCU is the box at the top front right hand corner.
look for connector M13 with a red mark on it and only 3 wires disconnect it and pull gently on the connector.
Spray the contacts of the connector and computer with connector cleaner.
put back together.......

MCU is at back lower left corner.
Find the connector with 3 wires and red mark, pull off this connector , spray it and put it back....should be job done...............

cheers

Apr 11, 2011 | Whirlpool Duet Sport HT WFW8400TE Washer

1 Answer

Getting a F28 code and the machine wont drain


Hi,
The F-28 code is a communication error between the Central Control Unit (CCU) and the Motor Control Unit (MCU).

1.Unplug the washer
2.Check the wire harness connections to the MCU, the motor, and the CCU
Check connections of the CCU board within the housing.
Make sure all grounding switches are engaged.
1.Check the drive system for any worn or failed components.
2.Plug in washer or reconnect power.
3.Verify CCU operation by running a Diagnostic Test or any cycle.
4.Check the MCU by looking for operations of the drive motor.
5.Check the drive motor for powered rotations.
6.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.

Hope this helps.

Shane

Apr 03, 2011 | Whirlpool Duet GHW9150P Front Load Washer

1 Answer

Throws in a little water stops and gives the f28 error code


Try the following Diagnostic Test first, then proceed to check the CCU and MCU connectors:

pctech1_36.jpg

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

  1. Unplug the washer before servicing.
  2. Using a 1/4 inch socket to remove the top of the machine and the back of the machine, check the connection to the CCU and the MCU.
  3. The CCU is the computer looking box at the top front right hand corner.
  4. 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. If you see any corrosion, clean it off and then re-assemble connector.
  5. The MCU is in the back lower left corner.
  6. 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.
  7. Put the back and top back on.
If you still continue to have the F28 code, you may have a failed Motor or Motor Control Board.

Mar 12, 2011 | Kenmore Elite 45986 Front Load Washer

1 Answer

Whirlpool wfw8500sr01 door locks and does not start F24 f26 f28 error codes


DOOR SWITCH ERROR

If the door has not been opened for 3 consecutive cycles or the door switch is open while the door is locked for more than 5 seconds.

Possible Causes/Procedure

-Door not opened during 3 consecutive cycles.

1. Open and close the door.
2. Verify CCU operation by running a Diagnostic Test or any cycle.

-Door switch open while door is locked.

1. Push the door and check if it is completely closed.
2. Verify CCU operation by running a Diagnostic Test or any cycle.

Thanks for using FixYa&^%

Dec 16, 2010 | Whirlpool Duet GHW9150P Front Load Washer

1 Answer

F28 code washer stops working. Reset will only


Error code F28 indicates that one of the below part is bad
  • Motor Control Unit (8540135)
  • Microcomputer Machine Control Unit (8540788)

If you find either the MCU or the CCU(Microcomputer Machine Control Unit) you can fix it,

Here's the online repair manual for Whirlpool Duet Sport, but its identical to your HE2.

Refer page# 4-20 it describes how to get to MCU.

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

May 04, 2010 | Kenmore HE2 Plus 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

Serial #HLT4230350, during washing the washer would stop and sometimes flash F28 , a technician says that the MCU was totally destroyed. Do I have to replace the enire Master Control Unit if the problem...


F28 = SERIAL COMMUNICATION ERROR
The communication between the Central Control Unit (CCU) and the Motor Control Unit (MCU) cannot be sent correctly.
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.

Nov 07, 2009 | Whirlpool Duet 3.8 cu. ft. Front Load...

1 Answer

New Whirlpool Duet Washer(WFW9300VU02) F28 error


You can call whirlpool for service but the tech sheet f28 has a communication problem from you computer to the motor..

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.

Sep 20, 2008 | Washing Machines

1 Answer

Code F28 error


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...

Aug 15, 2008 | Whirlpool WFW8500SR

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