The door switch of our duet is in a locked position, but the door is open

Instructions

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1. • 1 Unplug your Whirlpool Duet washer from the wall receptacle.
     
   • 2 Remove the three screws along the bottom front of the washer. Pull the bottom panel from the washer, opening the front of the washer.
     
   • 3 Reach your arm up through the opening to locate the door latch assemble inside the body of the washer. Grasp the tear-shaped tab with your fingers. Gently pull down on the tab until you hear a click. Pull on the Duet door to open it.
     
   • 4 Look inside the latch opening in the body of the washer for foreign material. Remove it from the switch with tweezers or needle-nose pliers. Look for any pieces of broken plastic that could indicate the door lock mechanism is broken and needs replacing.
     
   • 5 Shut the door on the washer and plug it into the wall receptacle. Confirm that the door remains unlocked. Unplug the washer and release the lock on the washer door as before if it fails to remain unlocked.
     
   • 6 Unplug the Duet washer from the receptacle. Pull the washer from the wall so you can access the rear of the washer.
     
   • 7 Remove the three screws from the top back of the Duet washer. Lift the top off the washer. Find the central control unit, or CCU, at the back right of the washing machine.
     
   • 8 Check that all the wiring harnesses plug securely into the CCU. The wiring harness for the door-lock solenoids is the sixth harness from the left of the CCU. The wiring harness for the door-lock main switches is the only black harness connected to the CCU.
     
   • 9 Remove the round retainer holding the rubber boot gasket from the Duet washer door opening by inserting a flat-head screwdriver beneath the spring on the retainer. Pull forward on the retainer spring to release it from the boot gasket.
     
   • 10 Pull the rubber boot gasket away from the opening at the switch location to access the door switch assembly. Check the wiring harness on the switch assembly to make sure it is engaged. Snap the gasket back in place, and replace the retainer on the washer.
     
   • 11 Plug the Duet washer into the wall receptacle. Select a washing cycle and press start. Listen for the door lock to engage. Turn the washer off and listen for the door lock to disengage, or wait 30 seconds and try to open the washer door.
     
   • 12 Unplug the washer from the wall receptacle. Pull the wiring harness for the door-lock solenoids from the CCU. Number the sets of wires attached to the wiring harness as 3, 2 and 1, from left to right.
     
   • 13 Set an electrical multimeter to "Ohm X1K." Insert one probe from the multimeter into opening number 3, along with the wire. Insert the remaining probe into opening number 2, along with the wires. The multimeter should read 60 ohms. Leave the probe in opening number 3, and move the remaining probe to opening number 1. The multimeter should read 60 ohms in this position as well. Should you receive any other reading, replace the wiring harness.
     
   • 14 Reconnect the wiring harness for the door-lock solenoids into the CCU. Plug the Duet washing machine into the wall receptacle. Select a wash cycle on the duet, then press start. Listen for the door lock to engage and immediately unplug the washer from the wall.
     
   • 15 Leave the wiring harness for the door-lock main switches plugged into the CCU. Number the wires in the harness 5, 4, 2 and 1, from left to right. The middle opening on the wiring harness is empty, so there isn't a third wire.
     
   • 16 Set the dial on the electrical multimeter to "Ohms X1K." Insert one probe into the opening next to wire 5, and insert the remaining probe into the opening next to wire 4. The meter should read zero ohms.
     
   • 17 Insert one probe into the opening next to wire number 2, and insert the remaining probe into the opening next to wire 1. The meter should read zero ohms. Replace the wiring harness should you receive any other reading.
     

Found this on the web . Hope this helps

You need to replace the door lock/switch. It is quite an easy job but is a tight fit behind the front so a bit tricky to get the old one out and the new one in.

F/dL error - Door Lock Error

A Door Lock Error occurs if the door cannot be unlocked. It will try to lock it 6 times before displaying the error.

• Door Lock Mechanism broken or removed from the Door
• Check Door Lock/Switch Assembly
• Check the wire harness connections to the Door Lock/Switch Assembly and Central Control Unit (CCU)
• Door Lock/Switch Assembly Failure

If all the connections are good replace the CCU.

This is a very common problem with Whirlpool duet front-loading washers and additional details you can find in this link: Whirpool DL_F_Code


Hope this helps (remember to rate this answer).

The door is not locked after 6 trials then the Central Control Unit (CCU) will enters a failure mode and the digital display flashes FdL. This is a door lock failure and the only viable solution is the replacement of the door lock and switch assembly.

Disconnect power to the washer and open the door. Remove the door gasket retaining hoop by stretching apart the retaining spring at the bottom of the door opening.


Gently peel the part of the door gasket near the door lock and switch assembly off the lip of the door opening outer lip. Remove enough of the door gasket to access the door lock and switch assembly behind the front panel.

Remove the three screws securing the door lock and switch assembly to the front panel and slightly lift then pull it back off the front panel and out of the out of the washer cabinet.

Connect the wiring harness to the new door lock and switch assembly one at a time then install it back in place behind the front panel.

Secure the door lock and switch assembly then put the eased part of the door gasket back over the outer lip of the door opening. Check that the door gasket is properly seated before putting back and securing the retaining hoop around the lip of the door opening and the door gasket.

There's a fault detected with the door lock and switch assembly. The door lock is not working or the door lock switch is not activated. This indicates that the door lock and switch assembly is malfunctioning and needs to be replaced to address the problem.

Disconnect power to the washer and open the door. Remove the door gasket retaining hoop by stretching apart the retaining spring at the bottom of the door opening. Using needle nose pliers, start where the spring and wire are connected and pull the wire out of the groove of the door gasket.



Remove the three screws securing the door lock and switch assembly to the front panel.



Gently peel the part of the door gasket near the door lock and switch assembly off the lip of the right side of the door opening. Remove enough of the door gasket to access the door lock and switch assembly behind the front panel.


Slightly lift the door lock and switch assembly then pull it back off the front panel and out of the cabinet.


Transfer the wiring harnesses to the new door lock and switch assembly one at a time then install it in place behind the front panel. Secure the door lock and switch assembly and put the eased part of the door gasket back into position over the lip of the door opening.

Check that the door gasket is properly seated before putting back and securing the retaining hoop around the lip of the door opening and the door gasket. Install the retaining hoop with the spring positioned at the bottom of the door gasket.

The clicking sound is coming from the door lock/switch assembly trying to lock the door but it cannot. After six trials, the error code "FdL" shows up on the display. Press PAUSE/CANCEL button twice to clear it.

The only way to fix the problem is by replacing the door lock/switch assembly with part numer 8181700 and costs about $40-$55. Some vendors listed it as part number 1094190 or PS972231. Below is the replacement procedure.

Door Lock/Switch Replacement Procedure

1. Unplug the machine and open the door.
   
2. Stretch the retainer spring of the seal boot retaining hoop then remove it. The seal boot is the gray rubber around the door opening. The retaining spring is located at the bottom of the door opening. The door lock/switch assembly is located on the right side of the door opening.
   
3. Ease the part of the seal boot off the lip of the door opening near the door lock/switch assembly. Remove enough of the seal boot to gain access to the door lock/switch assembly behind the front panel of the washer. Be careful not to tear the seal boot because it will cause water to leak from the tub.
   
4. Remove the three screws securing the door lock/switch assembly to the front panel.
5. Lift the door lock/switch assembly and pull it away from the front panel then pull it out of the machine.
   
6. Disconnect the wiring harness connector and connect the new door lock/switch assembly.
7. Reinstall the new door lock/switch assembly and the seal boot in reverse order of the procedure above.

DOOR LOCK ERROR
After 6 failed attempts to lock the door.
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).

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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The first thing to try is to hold the cancel button for 15 seconds. The more labor intensive solution is this: Remove the panel beneath the door (2 or 3 screws). Reach up, there is a little "ring" beneath the door lock. Pull this down, it releases the mechanism.

It is saying there is a problem with your door Lock. when you close the door does it hold like it use too? try to open and close the door if it doesn't really close properly then you will just need a door latch. If the machine gives you an f11 code then its the main computer board that can also give your the door lock error. I would check the door first though.