Tip & How-To about Washing Machines

Why Is WHIRLPOOL Duet & Duet HT washing machine showing F/dU error code on display?

The F/dU is shown on the display due to Door Unlock Error in the washing machine.
In this problem check the Door Lock in the washing machine. Either the door is getting blocked or not getting locked or the door latch assembly is got cracked.it needs to be checked and replaced.
This will help. Good Luck.

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1 Answer

error code " du "


DU = Door Unlock code

Washing machine displays error code F/DU after six attempts to unlock.
-Door lock assembly failed.
-Test door lock switch
-Visually inspect wire harness connection on CCU, Door lock assembly, replace door lock assembly.

The door lock assemble on this washing machine can be replaced from either the top of the front. The door boot can be removed or the top of the washer can be removed.

Hope this helps.

Jun 22, 2011 | Washing Machines

1 Answer

I have a du code that will not go off and the door is locked.


The F30 error code (dU) will flash when the dispenser motor cannot be driven to its proper position.



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.


Door Lock Mechanism broken.
Check Door Lock/Switch Assembly for foreign objects
Check Wire Harness connections to the Door Lock/Switch Assembly and Central Control Unit (CCU)
Door Lock/Switch Assembly Failure


If it is a cabrio:
dU flashes if the following conditions occur:
Excessive force on door lid is preventing lock bolt from retracting.
Wash media buildup is preventing lock bolt from retracting.
Machine/motor control cannot determine if door lid is in an unlocked state.





TEST #8 Door Lid Lock
Perform the following checks if washer fails to lock (or unlock).
1. Perform Manual: Door Switch and Manual: Door Lid Lock tests.
2. Remove the console to access the machine/ motor control assembly. See Accessing & Removing the Electronic Assemblies.
3. Visually check that the P12 connector is inserted all the way into the machine/motor control. If visual check passes, go to step 4. If visual check fails, reconnect P4 and repeat step 1.
4. Check the lid lock motor winding and switches by removing P12 from the machine/ motor control and checking the
resistance values....



Component/Resistance Unlocked/Resistance Locked/Contacts Measured/Contacts Measured:


Motor Winding/35 ±5 O/35 ±5 O/P12-2/P12-3/
Lock Switch - Home/0 O/Open Circuit/P12-1/P12-4
Lock Switch - Lock/Open Circuit/0 O/P12-1/P12-7
Lock Switch - Lid/Lid Closed = 0 OLid Open = Open Circuit/Lid Closed = 0 O Lid Open = Open Circuit/P12-1/P12-5


If resistance values are good, go to step 5. If switch measurements do not match the values shown in the table for unlocked (or locked) conditions, a problem
exists in the door lid lock. Replace the door lid lock.

5. If the Manual: Door Switch or Manual: Door Lid Lock in step 1 failed, then the machine/motor control has failed: Unplug washer or disconnect power.
Replace machine/motor control assembly. Perform the Manual: Door Switch and Manual: Door Lid Lock in step 1 to verify repair.



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Sep 27, 2010 | Whirlpool Cabrio WTW6600SBT Top Load...

1 Answer

du f flashes as code on whirlpooll whasher??


The F30 error code (dU) will flash when the dispenser motor cannot be driven to its proper position.



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.


Door Lock Mechanism broken.
Check Door Lock/Switch Assembly for foreign objects
Check Wire Harness connections to the Door Lock/Switch Assembly and Central Control Unit (CCU)
Door Lock/Switch Assembly Failure


If it is a cabrio:
dU flashes if the following conditions occur:
Excessive force on door lid is preventing lock bolt from retracting.
Wash media buildup is preventing lock bolt from retracting.
Machine/motor control cannot determine if door lid is in an unlocked state.





TEST #8 Door Lid Lock
Perform the following checks if washer fails to lock (or unlock).
1. Perform Manual: Door Switch and Manual: Door Lid Lock tests.
2. Remove the console to access the machine/ motor control assembly. See Accessing & Removing the Electronic Assemblies.
3. Visually check that the P12 connector is inserted all the way into the machine/motor control. If visual check passes, go to step 4. If visual check fails, reconnect P4 and repeat step 1.
4. Check the lid lock motor winding and switches by removing P12 from the machine/ motor control and checking the
resistance values....



Component/Resistance Unlocked/Resistance Locked/Contacts Measured/Contacts Measured:


Motor Winding/35 ±5 O/35 ±5 O/P12-2/P12-3/
Lock Switch - Home/0 O/Open Circuit/P12-1/P12-4
Lock Switch - Lock/Open Circuit/0 O/P12-1/P12-7
Lock Switch - Lid/Lid Closed = 0 OLid Open = Open Circuit/Lid Closed = 0 O Lid Open = Open Circuit/P12-1/P12-5


If resistance values are good, go to step 5. If switch measurements do not match the values shown in the table for unlocked (or locked) conditions, a problem
exists in the door lid lock. Replace the door lid lock.

5. If the Manual: Door Switch or Manual: Door Lid Lock in step 1 failed, then the machine/motor control has failed: Unplug washer or disconnect power.
Replace machine/motor control assembly. Perform the Manual: Door Switch and Manual: Door Lid Lock in step 1 to verify repair.



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

Nov 02, 2009 | Whirlpool Duet GHW9150P Front Load Washer

1 Answer

WHAT IS DU?


DU is 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.

Solutions -
  • Door Lock Mechanism broken.
  • Check Door Lock/Switch Assembly for foreign objects
  • Check Wire Harness connections to the Door Lock/Switch Assembly and Central Control Unit (CCU)
  • Door Lock/Switch Assembly Failure
  • May 19, 2009 | Kenmore Elite 45986 Front Load Washer

    2 Answers

    kenmore elite HE 3t - error code F dU and door is locked


    Just in case there is a pull string with a loop, all plastic under the latch, need to pull the toe panel off and reach up inside the right, unplugged of course until you feel the switch. a pull latch is below the switch incase this happens and hats off to all star/ a serial error or a faulty switch is most of what causes this to start.

    Jul 29, 2008 | Kenmore Elite 45986 Front Load Washer

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