Question about Whirlpool GHW9300 Duet Washer

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F 11 error code on Whirlpool Duet - Serial Communication Error ?

My washer sometimes gives an F11 error code-"serial communication error".  It still works, but I'd like to resolve the problem before it breaks completely.  Is this something I can fix? How do I start troubleshooting? what model number are you having these issues with. I have a GHW9300. And how much was the replacement component?

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  • Anonymous Apr 20, 2009

    tech said only repair is to replace both units.... over $700!!! What a rip off!!!! Seems like a common problem too... beware!!!

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Your F11 Code is stateing these things but if it is intermittent probabbly a loose connection.


Serial Communication Error
Communication between the Central Control Unit (CCU) and the Motor Control Unit (MCU) cannot be sent correctly.

  • 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

Posted on Feb 10, 2009

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SOURCE: F 11 error code on Whirlpool Duet - Serial Communication Error ?

I believe EVERY machine will have this F11 error eventually. Here is what fixed mine. Remove the top cover by removing the three 7mm screws on the back of the machine at the top. Slide the cover to the rear and lift off. The CCU board has 2 relays on it. They have white plastic covers. One is labeled K4 and I believe the other is K2. There are five legs on each relay soldering them to the circuit board. Remove the circuit board from the machine. It is the one you can see with the top off in the back of the machine. Unplug all the connectors. Unsolder the 2 relays...brand name Omron. With a jewelers screwdriver carefully remove the plastic cover on the K4 relay. Examine the contact points on the normally open contacts and I will guarantee they will look dull and burnt. They should be bright and shiny. You can burnish the contact points lightly and clean them with electrical contact cleaner. If you take off the cover of the 2nd relay you will see the contact points are nice and bright and shiny. Swap the 2 relays and resolder them on the circuit board. While you have the board out, take a pencil eraser and rub it on the contact points where all the connectors slide onto the board. Spray the electrical contact cleaner to wash any residue away. Carefully reinstall the circuit board and replace the top cover. Our machine has done dozens of loads since I did this with no more problems. I expect another failure at some point when the points deteriorate on the swapped relay. At that point I will try and find replacements for both relays. The K2 relay apparently has less voltage going thru the contacts and does not fail. If you feel real comfortable, you can check the "wiping" action of the points by manually operating the relay when you have it out. I adjusted mine to give a bit more wipe on both relays. I hope this helps...it worked for me!!

Posted on Jan 10, 2009

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1 Answer

Washer keeps giving a F11 error and won't reset


this is what F11 means

"F/11" Serial Communication Error
Communication between the Central Control Unit (CCU) and the Motor Control Unit (MCU) cannot be sent correctly.
  • 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

there's a possibility you may need to repace the motor controller(ccu) but most likely you have a bad connection between the main control(the front board) and the CCU(the board inside the washer). you need to unplug washer and get iside to check wire connections. good luck to you.

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We have a Duet that is 2yr 2 month old the washer will not spin and give a F11 code. What do I do?


HELLO THERE
F/11 Serial Communication Error
Communication between the Central Control Unit (CCU) and the Motor Control Unit (MCU) cannot be sent correctly.
  • 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

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1 Answer

F11 and/or dl code on a whirlpool duet front load washer


F11 is:
Serial Communication Error
Communication between the Central Control Unit (CCU) and the Motor Control Unit (MCU) cannot be sent correctly.
Check for:
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

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

Check the above link for a detailed article about the f11 error code.
Courtesy:JSrock

Apr 01, 2010 | Whirlpool Duet GHW9150P Front Load Washer

1 Answer

F11 code on washer


F11 is:
Serial Communication Error
Communication between the Central Control Unit (CCU) and the Motor Control Unit (MCU) cannot be sent correctly.
Check for:
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

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

Check the above link for a detailed article about the f11 error code.
Courtesy:JSrock

Mar 29, 2010 | Whirlpool Duet GHW9150P Front Load Washer

1 Answer

F11 Code Showing


F11 is:
Serial Communication Error
Communication between the Central Control Unit (CCU) and the Motor Control Unit (MCU) cannot be sent correctly.

Check for:
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

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

Check the above link for a detailed article about the f11 error code.

Courtesy:JSrock

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The F11 error. Where is bottom panel?


f11 serial communication error.communication between the central control unit {ccu} and the motor control unit {mcu} cannot be sent correctly.

Jan 15, 2010 | Whirlpool Duet GHW9150P Front Load Washer

1 Answer

Whirlpool ghw9150pwo f11 error code


f11 Serial Communication Error

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


* 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

Nov 04, 2009 | Whirlpool Duet GHW9150P Front Load Washer

1 Answer

Older whirlpool duet washer has error F11


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Unplug the machine and open the panels.
Unplug and re-plug all wire connectors from the ccu to the mcu.
Inspect all wires and harnesses for a bad wire.
Could be bad components; ccu or mcu or motor

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1 Answer

ERROR F11 (Whirlpool Duet GHW9300)


Hi there this is as it reads for your fault code F11


Serial Communication Error
Communication between the Central Control Unit (CCU) and the Motor Control Unit (MCU) cannot be sent correctly.
  • 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

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1 Answer

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F/11 Serial Communication Error
Communication between the Central Control Unit (CCU) and the Motor Control Unit (MCU) cannot be sent correctly.
globul1a.gif Check Wire Harness connectors to the MCU, the motor, and Central Control Unit (CCU) globul1a.gif Check the Drive system for any worn or failed components globul1a.gif Check MCU globul1a.gif Check CCU globul1a.gif Check Motor globul1a.gif Check Wire Harness

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