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Mcu and ccu

What part does mcu and ccu stand for on the Kenmore Elite Quiet pak 4?

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MCU = Motor Control Unit. A control board that is located in the rear of the washer at the bottom adjacent to the drive motor. Remove the back panel for access.

CCU = Central Control Unit. A control board that is located directly behind the wash tub. This is the main "brain" of the washer. You can access by removing the washer top panel.

Posted on Jun 30, 2009

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We have a Kenmore Elite Quiet Pak 4 Washer that we have had for 5 years. It has been flashing F11 and DL back and forth for months. We had a tech come out (not sure he knew what he was talking about) and...


The symptoms are pretty specific for the F11 code on the Whirlpool Duet front loaders and clones (Kenmore Elite and KitchenAid):

If the washer starts to fill but the drum NEVER moves, your MCU is bad

If the washer runs through most of a cycle and then gives the F11 before (or during) a rinse or spin cycle, then you have the CCU relay problem.

If you are interested in having me repair your CCU for you, I offer that service on eBay (website coming soon). My username there is "jhagner"

Thanks

Aug 19, 2011 | Kenmore Front Load Washer

1 Answer

My washer shows me the F 11 message and it won't start up right away I pushed the start botton then wait and it will start back up but it will spin then it will show me that F 11 message again. Also it...


The shaking probably shook a harness connection loose.
F11 Serial communication error
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).
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. Your tech sheet is in the bottom behind the service panel.
How to get into the machine

Dec 28, 2010 | Kenmore Front Load Washer

1 Answer

My washer won't finish a cycle & then beeps stops the cycle & then the screen blinks 06 then F? I just recently moved & it worked fine before that. I already tried unplugging it for 10 mins to...


The error is an indication a motor speed problem. You will need to check the following:
- Check the wiring harness. Verify all connections between the Drive Motor, Motor Control Unit (MCU), and Central Control Unit (CCU).
NOTE: The MCU is a circuit board located in the vicinity of the Drive Motor on the bottom rear of the washer. To access the MCU, you will need to remove the back panel of the washer.
NOTE: The CCU is the main computer for the washer and is located behind the wash tub. You will need to remove the top panel to access the CCU. This is accomplished by removing the three screws in the back of the washer that hold the top in place. Once the screws are removed, the top panel will slide back, then lift off.
- Check the Drive Motor. Perform a continuity check of the Drive Motor windings. Remove the connector plug and check across pins 1 to 2, 2 to 3, and 1 to 3. All readings should be approximately 6 ohms. HINT: You can also take this reading by removing connector 2 from the MCU and measuring across pins 1, 2 and 3. If the readings are good, this will also prove the wiring and connector good.
- Check the MCU. The connectors are numbered 1 to 3 (L to R). That is, with the MCU installed, connector 1 is on the bottom, followed by 2 in the middle, and 3 on top.
Connector 1 - is the serial communications link between the MCU and CCU and has three wires. At the opposite end, this will be the 2nd connector from the rear on the left-hand side of the CCU.
Connector 2 - is the link between the MCU and the Drive Motor. Pins 1, 2, and 3 on this connector are the Drive Motor windings. Pins 4 and 5 are for the tachometer.
Connector 3 - is the primary power connector. Pins 1 to 2 should read 120VAC with the door in the locked position. Pin 3 is ground. At the opposite end, this is the 4th connector from the right on the front of the CCU.
NOTE: All the connector pins are numbered R to L.
If your continuity readings are normal for the Drive Motor and you have verified all connectors, replace the MCU.
If any of the Drive Motor windings indicate readings higher that 6 ohms, replace the Drive Motor.

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Oct 07, 2010 | Kenmore Washing Machines

1 Answer

I have a kenmore elite he3 front loader washer. it gives me a f11 code when i attempt to wash a load.


F/11 is serial communication error code. It means the communication between the central control unit (CCU) and the motor control unit (MCU) is not good. Possible causes include worn or failed drive system components, faulty CCU or MCU, broken wiring harness, faulty drive motor, or faulty wiring harness connections in the CCU, the motor, or the MCU.

Jun 09, 2010 | Kenmore Elite 45986 Front Load Washer

2 Answers

Kenmore Elite Smartheat Quiet Pak 9 won't start. Light turns on and off inside drum when door opens/closes, but no lights come on on the outside display.


My Kenmore Elite dryer keeps beeping..just going through the end of cycle alarm-high,low,off...anyone have any suggestions?

May 30, 2010 | Kenmore Elite HE4 Electric Dryer

1 Answer

Kenmore elite he4 quiet pak 9 dryer display code


PF - Power Failure - PF error code indicates a power failure during the dryer's cycle. Press and HOLD start to continue the cycle, or press off/pause to clear display.

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May 15, 2010 | Kenmore Elite HE4 Electric Dryer

1 Answer

My washer is showing the code F 06.It's a Kenmore Elite Quiet pak 2 HE3.I don't have the manual. What does that mean?


The error is an indication a motor speed problem. You will need to check the following:

- Check the wiring harness. Verify all connections between the Drive Motor, Motor Control Unit (MCU), and Central Control Unit (CCU).

NOTE: The MCU is a circuit board located in the vicinity of the Drive Motor on the bottom rear of the washer. To access the MCU, you will need to remove the back panel of the washer.

NOTE: The CCU is the main computer for the washer and is located behind the wash tub. You will need to remove the top panel to access the CCU. This is accomplished by removing the three screws in the back of the washer that hold the top in place. Once the screws are removed, the top panel will slide back, then lift off.

- Check the Drive Motor. Perform a continuity check of the Drive Motor windings. Remove the connector plug and check across pins 1 to 2, 2 to 3, and 1 to 3. All readings should be approximately 6 ohms. HINT: You can also take this reading by removing connector 2 from the MCU and measuring across pins 1, 2 and 3. If the readings are good, this will also prove the wiring and connector good.

- Check the MCU. The connectors are numbered 1 to 3 (L to R). That is, with the MCU installed, connector 1 is on the bottom, followed by 2 in the middle, and 3 on top.

Connector 1 - is the serial communications link between the MCU and CCU and has three wires. At the opposite end, this will be the 2nd connector from the rear on the left-hand side of the CCU.
Connector 2 - is the link between the MCU and the Drive Motor. Pins 1, 2, and 3 on this connector are the Drive Motor windings. Pins 4 and 5 are for the tachometer.
Connector 3 - is the primary power connector. Pins 1 to 2 should read 120VAC with the door in the locked position. Pin 3 is ground. At the opposite end, this is the 4th connector from the right on the front of the CCU.

NOTE: All the connector pins are numbered R to L.

If your continuity readings are normal for the Drive Motor and you have verified all connectors, replace the MCU.

If any of the Drive Motor windings indicate readings higher that 6 ohms, replace the Drive Motor.


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Apr 17, 2010 | Kenmore 42822 Front Load Washer

1 Answer

My Kenmore Elite Quiet Pak 4 washer will start and everytime it at the exact time it will stop and give an f-11 error message. The drum will not spin.


"F11" is a Serial Communications error. This is a failure in communications between the Central Control Unit (CCU), Motor Control Unit (MCU) and Drive Motor. The following link explains how to troubleshoot:

http://www.fixya.com/support/r666194-f11_error_whirpool_duet_kenmore_elite

Now...some of these error codes can be erroneous. You may try unplugging the washer for at least 30 minutes, first, in an attempt to reset the CCU. Sometimes this is all that is required to correct momentary glitches. If the error code reappears following a CCU reset, then you have a legitimate problem. I would recommend you start by making sure all the wires are plugged in properly and making good contact. A good majority of these problems can be caused by connectors coming loose due to vibration.

If you have any questions along the way, please let me know. I hope this helps you.

Jun 30, 2009 | Washing Machines

1 Answer

I have a Kenmore Elete 45862401 Quiet Pac2 front end washer that stops during the wash cycle. it flashes a f6 error code. The manual says it is a loose wire between the mcu and/or control panel,shipping...


With the front door open, see if you can rotate the basket freely.  If not, most likely the bearing of the rear tub is worn out.  You will have to replace the whole rear tub which is about $300 for the part.  I am having the same issue with my Kenmore Elite Quiet Pak 2.  I'm contemplating with just buy a new top-load washer.

Mar 01, 2009 | Kenmore Elite 45986 Front Load Washer

3 Answers

I have a Kenmore Elite Quiet Pak 4 front load washer. I keep getting the DL and F11 error. The door is locked and won't open and the cycle will not continue. I can hear a small clicking noise in the...


f11 eror is a serial coommunication error check the harness wirinbg tio the motor and cpu unit
check the drive system for worn part
check mcu motor the dl error fial code is for door lock error it will try to lock 6 times before error code is displayed that is the issue see repair clinic.com for help hope that helps

Dec 01, 2008 | Kenmore Elite 45986 Front Load Washer

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