Whirlpool Duet Front-Load Washing Machine Error Codes

duet washing machine

The Whirlpool Duet front loading washing machine has a diagnostic test mode that can be used to help troubleshoot your washing machine's problem. This section of the Duet repair guide shows possible error codes, what they may mean, and what to do next!


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Whirlpool Duet Washing Machine Error Codes

Code

What it Means and What to Do

F/H

No water detected entering washing machine or Pressure switch trip not detected. If after 30 seconds the control does not detect water entering the washing machine, then valves will be turned off and the error code will be displayed.
Or If the control has turned the washer's water valves on and after 8 minutes the flow meter 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.
Potential Causes
• 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, plugged screens in the inlet valves, leak stop inlet hoses.
Verify inlet valve operation
• If there is water in the washer:
Verify Drain pump operation
• Pressure Switch Hose is in good condition and properly connected to Tub and Pressure switch
• Is there a siphon problem? Is the washer's drain line inserted to far into the drain?
• Verify wire harness connections to; Fill Valves, Pressure Switch, Drain Pump, Flow Meter, and Central Control Unit (CCU)
• Check all hoses for possible leaks
• Verify pressure switch operation
• Verify flow meter operation
• Verify CCU operation

F/02

Long Drain
If the drain time exceeds 8 minutes, the water valves are turned off and "F/02" is flashed. Press PAUSE/CANCEL twice to clear the display.
NOTE: After 4 minutes the "Sud" error will be displayed, then 4 minutes later the F/02 error code will be displayed.
Potential Causes
• Check the drain hose and make sure it is not plugged or kinked
• Check the electrical connections at the pump and make sure the pump is running.
• Check the washer's drain pump filter and drain pump for objects
• If the above does not correct the problem replace the pump

F/05

Water Temperature Sensor Error
If during the water heating step in the wash cycle, the water temperature sensor (NTC) value is out of range, or the heating element circuit has failed,  the "F/05" error
code will be displayed.
Potential Causes
• Check the Water Temperature Sensor, Heating Element  and Element Relay
• Check connections to the Sensor, Heating Element and Relay

F/06

Drive Motor Tachometer Error
The Duet washer control is unable to properly detect motor speed and the machine will shut down.
If a failure occurs during high-speed spin the door will be unlocked after 3 minutes.
Potential Causes
• Check wire harness connections between the washer's Drive Motor/Tachometer and the Motor Control Unit (MCU), and between the MCU and the Central Control Unit
(CCU)
• Check the washer's Drive Motor
• Check the MCU
• Check the Wire Harness

F/07

Motor Control Unit Error
The Central Control Unit has detected a short in the motor control unit. If a failure occurs during high-speed spin the door will be unlocked after 3 minutes.
Potential Causes
• Check wire harness connections between the Drive Motor and the Motor Control Unit (MCU), and between the MCU and the Central Control Unit (CCU)
• Check the MCU
• Check the Drive Motor
• Check the Wire Harness

F/09

Overflow Condition
If the Overflow contact on the pressure switch is Closed for more than 60 seconds an Overflow condition will occur. In an Overflow condition,  the Door will remain locked, and the Drain Pump will run constantly, even if  PAUSE/CANCEL is pressed twice and the Display is cleared. Unplug the unit to service.
Potential Causes
• Check the drain hose and make sure it is not plugged or kinked
• Check Wire Harness connections to the Drain Pump, Pressure Switch, and Central Control Unit (CCU)
• Check/ Clean Drain Pump Filter of foreign objects
• Check for Drain Pump Failure
• Check the Water Valve for proper shut off
• Check the Pressure switch for proper operation

F/10

Motor Control Unit (MCU) Heat Sink Thermal Trip
If the thermal protector on the MCU heat sink gets too hot, it will open the thermal protector on the heat sink which will stop motor functions and an "F/10"  will be displayed.
Potential Causes
• Check for Proper Installation, verify the unit is not located near a source of heat and has proper ventilation.
• Check Wire Harness connections to the MCU, the motor, and Central Control
Unit (CCU)
• Check the Drive system for any worn or failed components
• Check MCU
• Check Motor

F/11

Serial Communication Error
Communication between the Central Control Unit (CCU) and the Motor Control Unit
(MCU) cannot be sent correctly.
Potential Causes
• Check Wire Harness connections 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

F/13

Dispenser Circuit Error
If the dispenser motor is not able to be driven to it's proper position.
Potential Causes
• Check mechanical linkage from dispenser motor to the top of the dispenser.
• Check Wire Harness connections to the dispenser motor and Central Control Unit (CCU)
• Check Dispenser Motor

F/14

EEPROM Error
The Central Control Unit (CCU) receives it's data from an EEPROM onboard the CCU. If there is an error reading this data it will cause this error.
Potential Causes
• A power glitch may cause this error. Try unplugging the Unit for two minutes to see if that fixes the error.
• Check CCU.

F/15

Motor Control Unit (MCU) Error
If the MCU detects multiple resets or errors during a wash cycle it will go into this error mode.
Potential Causes
• Check Wire Harness connections to the MCU, the motor, and Central Control Unit (CCU)
• Check Drive belt
• Check MCU
• Check Motor
• Check Wire Harness

Sud

SUDS LOCK (Overdose of Detergent detected during the 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.
Potential Causes
• If too much detergent was used, run the unit through a Rinse/ Spin cycle then a normal cycle without adding any detergent. This should clear the unit of the excess detergent.
• Check the drain hose and make sure it is not plugged or kinked
• Check Wire Harness connections to the Drain Pump, Pressure Switch, and Central Control Unit (CCU)
• Check/ Clean Drain Pump Filter of foreign objects
• Check Drain Pump
• Check the Pressure Switch
• Check CCU

F/dL

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

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.
Potential Causes
• 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

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