Question about Whirlpool GHW9400 Duet Washer

2 Answers

I have a F11 failure. Initially stopped after 2 minutes. But after disconnecting and reconnecting wires to ccu it worked for a couple of days. Then began to stop after 10-12 minutes - then again F11 fault. Tried disconnect reconnect again but now F11 after brief attempt at water fill and drum turns. What next?

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STOP the insanity....that's what you're saying if you encounter the F11 and/or fDL error codes on your washer. If you're not there yet, you will be soon....
The dreaded F11 and/or fDL codes - been there done ALL that!! Our Whirlpool DUET washer is just over 5 years. We experienced our first F11 code 6 months ago (warranty just expired what else is new?). When it first happened, I thought nothing of it - hit the cancel button and the machine reset itself. Then it happened again and again and again. Each time it happened it was more challenging to reset it. I searched for the fix on line - I should have done my research before we purchased the washer.
I was able to determine the error was stemming from the CCU board. Order a new one at over $300.00 and have the same thing happen again - I don't think so. We tried EVERYTHING suggested on multiple websites.....unplugging the washer, hitting the right upper side, checking wires, wiggling the wires, wedging things to improve contacts, soldering, re-soldering, Vaseline, changed relays....anything and everything was a temporary fix. Contact Whirlpool directly? Tried that too, they apparently don't recognize there is an issue with F11 fDL errors, "not a commonly called in concern". Really?? We started searching washers to purchase....I couldn't bare spending $$$ for another washer, but we are a busy active family with 4 kids - what are our options? Then one night after searching the websites for one last desperate attempt at salvaging our washer, I followed through on a link:
http://cgi.ebay.com/Whirlpool-Duet-Kenmore-HE3T-CCU-Repair-For-F11-FDL-Code_W0QQitemZ230397337074QQcmdZViewItemQQptZLH_DefaultDomain_0?hash=item35a4c05df2

email: selling.surplus@gmail.com

Now, I'm the biggest sceptic in the world and the most frugal consumer - really I am. I am posting my testament to this service because I've been there - frustrated, disappointed, angry. I am so pleased with the service Ed provided - from answering all my questions, to the superb job he did on the CCU. You can review all the comments posted by all his other pleased customers on eBay. I had to stand by my washer for the first 6 loads - just in case the beep beep beeps started. To my astonishment, amazement, and surprise - it never happened!! In my opinion, this is the only true fix for your F11/Fdl error!!
I never imagined in my wildest dreams ever telling anyone how happy I am to be doing my laundry again, but I really am!!

Posted on May 14, 2010

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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

Posted on Feb 19, 2014

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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

blueextc3221
  • 15935 Answers

SOURCE: I have a F11 failure. Initially stopped after 2

"F11" is a Serial Communications error between the Central Control Unit (CCU) and Motor Control Unit (MCU). The CCU is the main computer for the washer and is located directly behind the wash tub. The MCU is the Drive Motor Control board and is located in the rear of the washer adjacent to the Drive Motor on the left-hand side (facing from the rear with the back panel removed). The wiring harness can also cause the error, but it is not as common a problem.

Whirlpool is the manufacturer of both model washers and recommends the following troubleshooting advice. Remove the top panel of the washer by removing the three screws holding it in place in the rear. Once the screws are removed, the panel slides back, then off. Remove the rear panel of the washer for access to the drive motor and MCU. Now check the following:

- Check the wire harness connections between the CCU, the MCU and Drive Motor. Make sure all connections are attached and making good contact. Check for any broken wires or connector pins.
- Check the Drive Motor to see if it free spins and that the belt is still attached and not slipping. If the motor is seized, replace it. If the belt is broken or worn, replace it as well.
- Check the MCU. Connector 1 is the Serial Communications Link between the MCU and CCU. Connector 2 is the connector to the drive motor. Resistance checks across pins 1, 2, & 3 are the motor windings. Connector 3 is the power supply - 120VAC should be read across pins 1 and 2 with the door in the locked position. NOTE: The connectors are read 1, 2, and 3 from the bottom to the top with the MCU installed.
- Check the CCU. Verify connectors 7 and 11 are properly installed. Facing from the front of the washer, connector 7 is the 4th connector from the RIGHT along the front. This is MCU Power. Connector 11 is the Serial Communications link from the CCU to the MCU and is located along the left hand side of the CCU (the connectors are numbered 11 through 14 back to front).
- Check the Drive Motor. Remove the connector and perform resistance checks on the motor connector pins. Readings across pins 1 to 2, 2 to 3 and 1 to 3 should read 6 ohms.

In most cases this is an indication of a failed CCU. This is an easy repair that the average do-it-yourselfer can accomplish on their own. If the washer is still under a warranty, parts and labor would be covered. With no warranty, a replacement parts will vary in price depending on where you get them. There are several good websites available that you can order parts on line and have shipped directly to you.


NOTE: Remove all the connectors from the CCU ONE AT A TIME and reconnect to see if the error code goes away BEFORE you decide to purchase a new one. It is not common, but sometimes a flaky connection can generate error codes.

Thanks for using FixYa - a 4 THUMBS rating is appreciated for answering your FREE question.*(&(*

Posted on Sep 29, 2010

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2 Answers

Washer code F11??? I have a Kenmore Elite front loader


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.
themobilian_2874.jpg

Service manual and more HERE

Aug 22, 2011 | Kenmore Washing Machines

3 Answers

My machine shows an f11 or f14 error code and it won't work. What can I do?


Circuit Board Medics can rebuild and upgrade the CCU to eliminate the F11 error and prevent it from happening again. Find more details at http://circuitboardmedics.com/whirlpool-f11-code/
This video shows how to remove the CCU from the machine.



Aug 02, 2011 | Whirlpool Duet GHW9150P Front Load Washer

2 Answers

I get an F11 error. Washer will not start in any mode.


GHW9150P Tech sheet:
FH: If after 30 seconds the control does not detect water entering
machine, the valves will be turned off and the error code will be
displayed. OR If the control has turned the water valves on and after
8 minutes the flow sensor has detected 10.5 gallons of water passing through it, but has not detected the pressure switch trip, the valves will be turned off and the error code will flash.
Press PAUSE/CANCEL twice to clear the display.
If there is no water in the unit:
-Make sure that both valves at the water source(s) are turned
on all the way.
-Check for plugged or kinked inlet hoses or plugged screens in
the inlet valves.
-Verify inlet valve operation.
If there is water in the unit:
-Verify drain pump operation.
-Verify that the pressure switch hose is in good condition and
properly connected to tub and pressure switch.
1. Verify there is not a siphon problem.
2. Unplug washer or disconnect power.
3. Verify wire harness connections to inlet valves,
pressure switch, drain pump, flow meter, and
Central Control Unit (CCU).
4. Check all hoses for possible leaks.
5. Plug in washer or reconnect power
6. Verify pressure switch operation.
7. Verify flow meter operation by blowing air through the part and
measuring the resistance.
8. Verify CCU operation by running a Diagnostic test or any cycle.
F-2 Long Drain
If the drain time exceeds eight minutes, the water valves are turned off
and "F/02" is flashed. Press PAUSE/CANCEL two times to clear the
display.
NOTE: After four minutes the "Sud" error will be displayed, then four
minutes later the "F/02" error code will be displayed.
1. Check the drain hose and make sure it is not plugged
or kinked.
2. Unplug washer or disconnect power.
3. Check the electrical connections at the pump and
make sure the pump is running.
4. Check the drain pump filter for foreign objects.
5. Plug in washer or reconnect power.
6. If the above does not correct the problem, go to step 7.
7. Unplug washer or disconnect power.
8. Replace the pump.
F-5 Water temp sensor failure
If during the water heating step in the wash cycle, the water
temperature sensor (NTC) value is out of range, the "F/05" error code
will be displayed. Possible cause/proceedure:
1. Unplug washer or disconnect power.
2. Check the water temperature sensor. Refer to the
"Water Temperature Sensor" section. Check
connections to the water temperature sensor.
3. Check resistance of heating element, if present on this
model. (abnormal = infinity)
F-06 Drive motor Tachometer error
Possible causes/procedure:
1. Verify the shipping system including shipping bolts, spacers
and cables are removed.
2. Unplug washer or disconnect power.
3. Check wire harness connections between the drive motor and
the Motor Control Unit (MCU), and between the MCU and the
Central Control Unit (CCU).
4. Plug in washer or reconnect power.
5. Check the MCU by looking for operations of the drive motor.
6. Check the drive motor for powered rotations.
F-07 Motor control unit error
Possible causes/proceedure:
1. Unplug washer or disconnect power.
2. Check wire harness connections between the drive motor and
the Motor Control Unit (MCU), and between the MCU and the
Central Control Unit (CCU).
3. Plug in washer or reconnect power.
4. Check the MCU by looking for operations of the drive motor.
5. Check the drive motor for powered rotations.
F-09 Overflow Condition
Possible causes/procedure:
1. Check the drain hose and make sure it is not plugged
or kinked.
2. Unplug washer or disconnect power.
3. Check wire harness connections to the drain pump,
pressure switch, and Central Control Unit (CCU).
4. Check/clean drain pump filter of foreign objects.
5. Check for drain pump failure.
6. Check the inlet valve for proper shut off.
7. the pressure switch for proper operation.
F10 Motor control unit heat sink thermal trip
Possible causes/procedure:
1. Check for proper installation, verify the unit is not located
near a source of heat and has proper ventilation.
2. Unplug washer or disconnect power.
3. Check wire harness connections to the MCU, the motor,
and Central Control Unit (CCU).
4. Check the drive system for any worn or failed components.
5. Plug in washer or reconnect power.
6. Check the MCU by looking for operations of the drive motor.
7. Check the drive motor for powered rotations.
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.
F13 Dispenser circuit error
Possible causes/proceedure:
1. Unplug washer or disconnect power.
2. Check mechanical linkage from dispenser motor to the top of
the dispenser.
3. Check wire harness connections to the dispenser motor and
Central Control Unit (CCU).
4. Check dispenser motor for powered rotations.
F14 The dreaded EEPROM error
The Central Control Unit (CCU) receives its data from an EEPROM
onboard the CCU. If there is an error reading this data it will cause this
error. Possible causes/proceedure:
¦ A power glitch may cause this error.
1. Unplug washer or disconnect power for two minutes.
2. Verify CCU operation by running a Diagnostic test or any
cycle.
F15 Motor control unit error
If the MCU detects multiple resets or errors during a wash cycle it will
go into this error mode. Possible causes/proceedure:
1. Unplug washer or disconnect power.
2. Check wire harness connections to the MCU, the motor, and
Central Control Unit (CCU).
3. Check drive belt.
4. Plug in washer or reconnect power.
5. Check the MCU by looking for operations of the drive motor.
6. Check the drive motor for powered rotations.
F21 F 22 CCU /touchpad/LED assembly unable to transmit/receive data to/from the CCU central control unit
Possible causes/procedure:
1. Check the touch-pad/LED assembly by selecting different
cycles and changing the modifiers and options available to
confirm the touch-pad/LED is responding.
2. Unplug washer or disconnect power.
3. Check wire harness connections to the
touch-pad/LED assembly and Central Control Unit (CCU).
F du Door unlock error
A Door Unlock Error occurs if the door cannot be unlocked. It will try to
unlock the door 6 times before displaying the error code.
Possible causes/procedure:
¦ Door lock mechanism is broken.
¦ Door switch/lock unit failure.
1. Check door switch/lock unit for foreign objects.
2. Unplug washer or disconnect power.
3. Check wire harness connections to the door switch/lock
unit and Central Control Unit (CCU).
NOTE: The door switch/lock unit can be manually unlocked. See
"Manually Unlocking The Door Lock System".
F dl Door lock error
A Door Lock Error occurs if the door cannot be locked. It will try to lock
it six times before displaying the error code.
Possible causes/procedure:
¦ Door lock mechanism is broken or removed from door.
¦ Door switch/lock unit failure.
1. Unplug washer or disconnect power.
2. Check door switch/lock unit.
3. Check the wire harness connections to the door
switch/lock unit and Central Control Unit (CCU).
Sud: Suds lock (overdose of detergent detected during wash cycle)
The motor control unit senses a suds lock condition by analyzing the
current draw on the drive motor. If "Sud" is displayed a potential Suds
Lock is detected. This may signify a bad pump, an extra heavy load,
excessive detergent, or excessive suds.
Possible causes/procedure:
¦ If too much detergent was used:
-Run the unit through a Rinse/Spin cycle.
-Run a Normal cycle without adding any detergent.
This should clear the unit of the excess detergent.
1. Check the drain hose and make sure it is not plugged
or kinked.
2. Unplug washer or disconnect power.
3. Check wire harness connections to the drain pump,
pressure switch, and Central Control Unit (CCU).
4. Check/clean drain pump filter of foreign objects.
5. Plug in washer or reconnect power.
6. Check drain pump.
7. Check the pressure switch.
8. Verify CCU operation by running a Diagnostic test or any
cycle.
Tech sheet link:
https://servicematters.com/secured/docs/wiring/Tech%20Sheet%20-%208182277.pdf

Mar 01, 2011 | Whirlpool Duet GHW9150P Front Load Washer

1 Answer

07f error code... duet washer W9150


Tech sheet on this model:
FH: If after 30 seconds the control does not detect water entering
machine, the valves will be turned off and the error code will be
displayed. OR If the control has turned the water valves on and after
8 minutes the flow sensor has detected 10.5 gallons of water passing
through it, but has not detected the pressure switch trip, the valves will
be turned off and the error code will flash.
Press PAUSE/CANCEL twice to clear the display.
If there is no water in the unit:
-Make sure that both valves at the water source(s) are turned
on all the way.
-Check for plugged or kinked inlet hoses or plugged screens in
the inlet valves.
-Verify inlet valve operation.
If there is water in the unit:
-Verify drain pump operation.
-Verify that the pressure switch hose is in good condition and
properly connected to tub and pressure switch.
1. Verify there is not a siphon problem.
2. Unplug washer or disconnect power.
3. Verify wire harness connections to inlet valves,
pressure switch, drain pump, flow meter, and
Central Control Unit (CCU).
4. Check all hoses for possible leaks.
5. Plug in washer or reconnect power
6. Verify pressure switch operation.
7. Verify flow meter operation by blowing air through the part and
measuring the resistance.
8. Verify CCU operation by running a Diagnostic test or any cycle.
F-2 Long Drain
If the drain time exceeds eight minutes, the water valves are turned off
and "F/02" is flashed. Press PAUSE/CANCEL two times to clear the
display.
NOTE: After four minutes the "Sud" error will be displayed, then four
minutes later the "F/02" error code will be displayed.
1. Check the drain hose and make sure it is not plugged
or kinked.
2. Unplug washer or disconnect power.
3. Check the electrical connections at the pump and
make sure the pump is running.
4. Check the drain pump filter for foreign objects.
5. Plug in washer or reconnect power.
6. If the above does not correct the problem, go to step 7.
7. Unplug washer or disconnect power.
8. Replace the pump.
F-5 Water temp sensor failure
If during the water heating step in the wash cycle, the water
temperature sensor (NTC) value is out of range, the "F/05" error code
will be displayed. Possible cause/proceedure:
1. Unplug washer or disconnect power.
2. Check the water temperature sensor. Refer to the
"Water Temperature Sensor" section. Check
connections to the water temperature sensor.
3. Check resistance of heating element, if present on this
model. (abnormal = infinity)
F-06 Drive motor Tachometer error
Possible causes/proceedure:
1. Verify the shipping system including shipping bolts, spacers
and cables are removed.
2. Unplug washer or disconnect power.
3. Check wire harness connections between the drive motor and
the Motor Control Unit (MCU), and between the MCU and the
Central Control Unit (CCU).
4. Plug in washer or reconnect power.
5. Check the MCU by looking for operations of the drive motor.
6. Check the drive motor for powered rotations.
F-07 Motor control unit error
Possible causes/proceedure:
1. Unplug washer or disconnect power.
2. Check wire harness connections between the drive motor and
the Motor Control Unit (MCU), and between the MCU and the
Central Control Unit (CCU).
3. Plug in washer or reconnect power.
4. Check the MCU by looking for operations of the drive motor.
5. Check the drive motor for powered rotations.
F-09 Overflow Condition
Possible causes/proceedure:
1. Check the drain hose and make sure it is not plugged
or kinked.
2. Unplug washer or disconnect power.
3. Check wire harness connections to the drain pump,
pressure switch, and Central Control Unit (CCU).
4. Check/clean drain pump filter of foreign objects.
5. Check for drain pump failure.
6. Check the inlet valve for proper shut off.
7. the pressure switch for proper operation.
F10 Motor control unit heat sink thermal trip
Possible causes/proceedure:
1. Check for proper installation, verify the unit is not located
near a source of heat and has proper ventilation.
2. Unplug washer or disconnect power.
3. Check wire harness connections to the MCU, the motor,
and Central Control Unit (CCU).
4. Check the drive system for any worn or failed components.
5. Plug in washer or reconnect power.
6. Check the MCU by looking for operations of the drive motor.
7. Check the drive motor for powered rotations.
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.
F13 Dispenser circuit error
Possible causes/proceedure:
1. Unplug washer or disconnect power.
2. Check mechanical linkage from dispenser motor to the top of
the dispenser.
3. Check wire harness connections to the dispenser motor and
Central Control Unit (CCU).
4. Check dispenser motor for powered rotations.
F14 The dreaded EEPROM error
The Central Control Unit (CCU) receives its data from an EEPROM
onboard the CCU. If there is an error reading this data it will cause this
error. Possible causes/proceedure:
¦ A power glitch may cause this error.
1. Unplug washer or disconnect power for two minutes.
2. Verify CCU operation by running a Diagnostic test or any
cycle.
F15 Motor control unit error
If the MCU detects multiple resets or errors during a wash cycle it will
go into this error mode. Possible causes/proceedure:
1. Unplug washer or disconnect power.
2. Check wire harness connections to the MCU, the motor, and
Central Control Unit (CCU).
3. Check drive belt.
4. Plug in washer or reconnect power.
5. Check the MCU by looking for operations of the drive motor.
6. Check the drive motor for powered rotations.
F21 F 22 CCU /touchpad/LED assembly unable to transmit/receive data to/from the CCU central control unit
Possible causes/procedure:
1. Check the touch-pad/LED assembly by selecting different
cycles and changing the modifiers and options available to
confirm the touch-pad/LED is responding.
2. Unplug washer or disconnect power.
3. Check wire harness connections to the
touch-pad/LED assembly and Central Control Unit (CCU).
F du Door unlock error
A Door Unlock Error occurs if the door cannot be unlocked. It will try to
unlock the door 6 times before displaying the error code.
Possible causes/proceedure:
¦ Door lock mechanism is broken.
¦ Door switch/lock unit failure.
1. Check door switch/lock unit for foreign objects.
2. Unplug washer or disconnect power.
3. Check wire harness connections to the door switch/lock
unit and Central Control Unit (CCU).
NOTE: The door switch/lock unit can be manually unlocked. See
"Manually Unlocking The Door Lock System".
F dl Door lock error
A Door Lock Error occurs if the door cannot be locked. It will try to lock
it six times before displaying the error code.
Possible causes/proceedure:
¦ Door lock mechanism is broken or removed from door.
¦ Door switch/lock unit failure.
1. Unplug washer or disconnect power.
2. Check door switch/lock unit.
3. Check the wire harness connections to the door
switch/lock unit and Central Control Unit (CCU).
Sud: Suds lock (overdose of detergent detected during wash cycle)
The motor control unit senses a suds lock condition by analyzing the
current draw on the drive motor. If "Sud" is displayed a potential Suds
Lock is detected. This may signify a bad pump, an extra heavy load,
excessive detergent, or excessive suds.
Possible causes/procedure:
¦ If too much detergent was used:
-Run the unit through a Rinse/Spin cycle.
-Run a Normal cycle without adding any detergent.
This should clear the unit of the excess detergent.
1. Check the drain hose and make sure it is not plugged
or kinked.
2. Unplug washer or disconnect power.
3. Check wire harness connections to the drain pump,
pressure switch, and Central Control Unit (CCU).
4. Check/clean drain pump filter of foreign objects.
5. Plug in washer or reconnect power.
6. Check drain pump.
7. Check the pressure switch.
8. Verify CCU operation by running a Diagnostic test or any
cycle.
Tech sheet link:
https://servicematters.com/secured/docs/wiring/Tech%20Sheet%20-%208182277.pdf

Jan 27, 2011 | Whirlpool Duet GHW9150P Front Load Washer

1 Answer

I have a kenmore elite smartwash quietPak9. I continue to get an F11 code and a dL code. What does this mean and can it be fixed?


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.
F dl Door lock error
A Door Lock Error occurs if the door cannot be locked. It will try to lock
it six times before displaying the error code.
Possible causes/procedure:
¦ Door lock mechanism is broken or removed from door.
¦ Door switch/lock unit failure.
1. Unplug washer or disconnect power.
2. Check door switch/lock unit.
3. Check the wire harness connections to the door
switch/lock unit and Central Control Unit (CCU).
Your tech sheet is attached to the base panel.
Use that tech sheet as a guide for diagnostics.

Use this service manual to ID and exchange parts

Jan 21, 2011 | Kenmore Washing Machines

1 Answer

Wont start, error code f01


The F01 error code indicates a communication error between the Central Control Unit (CCU) and the EEPROM onboard the CCU occurred. This type of failure generally requires replacing the Central Control Unit (CCU). You could try disconnecting the power cord for a couple of minutes and then reconnect the power cord. If it continues to flash "F01" I recommend calling a service technician to remove and replace the CCU.

Jan 16, 2011 | Dryers

1 Answer

My whirlpool Duet washer keeps stopping in the middle of a cycle with the code F11. It doesn't go through the spin cycle. Any suggestions? Thanks!


Hi.

F11 is communication error between CCU (main control unit) and MCU (motor control unit - additional control module connected to motor and to CCU, located in a sealed box inside the washer).

This usually means that either CCU or MCU is defective. In some case the connectors or the wiring harness connecting the two modules is the problem.

The tech sheet says:

F11:Serial Communication Error
Communication between the Central Control Unit (CCU) and the Motor Control Unit (MCU) cannot be sent correctly.
Solution:
* Check Wire Harness connectors to the MCU, the motor, and Central Control Unit (CCU)
* Check the Drive system for any worn or failed components
* Check MCU
* Check CCU
* Check Motor
* Check Wire Harness

The wiring harness is tested using a multimeter to ensure that there is continuity between the MCU and CCU connectors. If a single wire is good it will read zero Ohms (closed) from contact to contact.
Motor is tested reading Ohms, it must be read about 6 Ohms on three different pairs of contacts.
Drive system in motor is checked observing if any of the parts are broken.
MCU and CCU are tested reading volts during operation and testing at component level. The testing must be done by a tech. Check CCU to see if there is any sign of failure (eg burnt spots).

Most of the time the problem is CCU. Trick to repair it include testing and eventually reheating the solder joint of the two on-board relays, cleaning connector contacts with circuit cleaner solution. This in case that the problem is CCU.

Disconnect the unit from power for five minutes as first test. This will reset CCU.

Oct 25, 2010 | Whirlpool Duet GHW9150P Front Load Washer

1 Answer

Stops washing mid cycle flashes f11


Here is what the manufacture says about this error code followed by my comments.

Communication between the Central Control Unit (CCU) and the
Motor Control Unit (MCU) cannot be sent correctly.
What to do:
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.

Phil's comments ---------->

This error usually indicates a failure of the circuit board that controls the motor. It is a repair I would suggest leaving to a professional as it can be tricky to diagnose the problem

Apr 19, 2010 | Kenmore Elite 45986 Front Load Washer

1 Answer

I have a F11 failure. Initially stopped after 2 minutes. But after disconnecting and reconnecting wires to CCU, it worked for a couple of days. Then began to stop after 10-12 minutes - then again F11...


"F11" is a Serial Communications error between the Central Control Unit (CCU) and Motor Control Unit (MCU). The CCU is the main computer for the washer and is located directly behind the wash tub. The MCU is the Drive Motor Control board and is located in the rear of the washer adjacent to the Drive Motor on the left-hand side (facing from the rear with the back panel removed). The wiring harness can also cause the error, but it is not as common a problem.

Whirlpool is the manufacturer of both model washers and recommends the following troubleshooting advice. Remove the top panel of the washer by removing the three screws holding it in place in the rear. Once the screws are removed, the panel slides back, then off. Remove the rear panel of the washer for access to the drive motor and MCU. Now check the following:

- Check the wire harness connections between the CCU, the MCU and Drive Motor. Make sure all connections are attached and making good contact. Check for any broken wires or connector pins.
- Check the Drive Motor to see if it free spins and that the belt is still attached and not slipping. If the motor is seized, replace it. If the belt is broken or worn, replace it as well.
- Check the MCU. Connector 1 is the Serial Communications Link between the MCU and CCU. Connector 2 is the connector to the drive motor. Resistance checks across pins 1, 2, & 3 are the motor windings. Connector 3 is the power supply - 120VAC should be read across pins 1 and 2 with the door in the locked position. NOTE: The connectors are read 1, 2, and 3 from the bottom to the top with the MCU installed.
- Check the CCU. Verify connectors 7 and 11 are properly installed. Facing from the front of the washer, connector 7 is the 4th connector from the RIGHT along the front. This is MCU Power. Connector 11 is the Serial Communications link from the CCU to the MCU and is located along the left hand side of the CCU (the connectors are numbered 11 through 14 back to front).
- Check the Drive Motor. Remove the connector and perform resistance checks on the motor connector pins. Readings across pins 1 to 2, 2 to 3 and 1 to 3 should read 6 ohms.

In most cases this is an indication of a failed CCU. This is an easy repair that the average do-it-yourselfer can accomplish on their own. If the washer is still under a warranty, parts and labor would be covered. With no warranty, a replacement parts will vary in price depending on where you get them. There are several good websites available that you can order parts on line and have shipped directly to you.


NOTE: Remove all the connectors from the CCU ONE AT A TIME and reconnect to see if the error code goes away BEFORE you decide to purchase a new one. It is not common, but sometimes a flaky connection can generate error codes.

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Mar 16, 2010 | Whirlpool GHW9400 Duet Washer

1 Answer

AFter start of cycle F11 displays and washer stops


The Motor Control Unit has internal failure; repeating under or over voltage, or over current conditions. If failure occurs during high-speed spin the door unlocks after 3 minutes. Possible Causes/Procedure 1. Unplug washer or disconnect power. 2. Check wire harness connections between the drive motor and the Motor Control Unit (MCU), and b etween the MCU and the Central Control Unit (CCU). Check the motor and do a continuity test. 3. Plug in washer or reconnect power. 4. Check the MCU by looking for operations of the drive motor. 5. Check the drive motor for powered rotations. 6. Replace MCU board.

Jun 18, 2009 | Whirlpool Duet GHW9150P Front Load Washer

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