Whirlpool Duet Sport WFW8300SW Instruction Manual page 81

DISPLAY EXPLANATION AND RECOMMENDED PROCEDURE
DRIVE MOTOR TACHOMETER ERROR
If the control is unable to properly detect motor speed, the
machine shuts down. If a failure occurs during high-speed spin,
the door unlocks after 3 minutes.
Reference Status
Possible Causes/Procedure
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1. Verify the shipping system including shipping bolts, spacers
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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.
DOOR SWITCH ERROR
If the door has not been opened for 3 consecutive cycles or the
door switch is open while the door is locked for more than
5 seconds.
Reference Status
Possible Causes/Procedure
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Door not opened during 3 consecutive cycles.
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1. Open and close the door.
2. Verify CCU operation by running a Diagnostic Test or any
cycle.
Door switch open while door is locked.
1. Push the door and check if it is completely closed.
2. Verify CCU operation by running a Diagnostic Test or any
cycle.
OVERFLOW CONDITION
If the overflow contact on the pressure switch is closed for
more than 60 seconds, an Overflow Condition occurs. In an
overflow condition, the door remains locked and the drain pump
Reference Status
runs constantly, even if PAUSE/CANCEL is pressed twice and
the display is cleared. Turn off hot and cold water faucets and
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unplug the unit before servicing.
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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, water inlet value, 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. Check the pressure switch for proper operation.
SERIAL COMMUNICATION ERROR
The communication between the Central Control Unit (CCU) and
the Motor Control Unit (MCU) cannot be sent correctly.
Possible Causes/Procedure
Reference Status
1. Unplug washer or disconnect power.
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2. Check wire harness connections to the MCU, the motor, and
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Central Control Unit (CCU).
– Check connections of the CCU board within the housing.
– Make sure all grounding switches are engaged.
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.
DISPLAY EXPLANATION AND RECOMMENDED PROCEDURE
DOOR UNLOCK ERROR
If the door unlock has failed 6 times.
Possible Causes/Procedure
Door lock mechanism is broken.
Reference Status
Door switch/lock unit failure.
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1. Check door switch/lock unit for foreign objects.
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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.
DISPENSER SYSTEM ERROR
When the dispenser motor cannot be driven to its proper
position.
Possible Causes/Procedure
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1. Unplug washer or disconnect power.
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2. Check mechanical linkage from dispenser motor to the top
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of the dispenser.
3. Check wire harness connections to the dispenser motor
and Central Control Unit (CCU).
4. Check dispenser motor for powered rotations.
MCU FAILURE
If the heat sink gets too hot, the Motor Control Unit (MCU) will
stop the motor, the MCU will communicate this failure to the
Central Control Unit (CCU), then the CCU will reset the MCU.
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If the condition continues four times, the F31 code will show.
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Possible Causes/Procedure
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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.
PUMP DRIVE SYSTEM ERROR
When the connection between pump and the Central Control
Unit (CCU) is lost.
Possible Causes/Procedure
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1. Unplug washer or disconnect power.
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2. Check wire harness connections to the pump and Central
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Control Unit (CCU).
3. Plug in washer or reconnect power.
4. Verify CCU operation by running a Diagnostic Test or any
cycle. Refer to the Continuity tests.
LOAD INSIDE DRUM DURING CLEANING
WASHER CYCLE
Reference Status
If at the start of the CLEANING WASHER cycle a load is
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NOTE: Detects by weight.
Possible Causes/Procedure
Remove clothes from drum and start the cycle again.
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