A communication error between the Central Control Unit (CCU)

and the EEPROM onboard the CCU occurred.

PUMP DRIVE ERROR

The pump driver fails to activate.

MAIN RELAYS ERROR

One of the main relays is not working properly.

Unplug washer or disconnect power for two minutes.

Verify CCU operation by running a Diagnostic Test or any cycle.

Replace CCU board.

The relay might be soldered or always open.

Replace CCU board.

The Heater has a internal short circuit.

Measure insulating resistance of heater between contact
and housing (norm. 2 M?).

Replace heater.

Perform test program.

The Motor Control Unit has internal failure; repeating under or
over voltage, or over current conditions. If failure occurs during

high-speed spin the door unlocks after 3 minutes.

2. Check wire harness connections between the drive motor and the
Motor Control Unit (MCU), and b etween the MCU and the Central
Control Unit (CCU). Check the motor and do a continuity test.

3. Plug in washer or reconnect power.

4. Check the MCU by looking for operations of the drive motor.

5. Check the drive motor for powered rotations.

6. Replace MCU board.

The pressure switch is not tripped after 6 minutes.

Make sure that both valves at the water source(s) are turned
on all the way.

Check for plugged or kinked inlet hoses or plugged screens in
the inlet valves.

Verify inlet valve operation.

If there is water in the unit:

Verify drain pump operation.

Verify that the pressure switch hose is in good condition and
properly connected to tub and pressure switch.

1. Verify there is not a siphon problem.

2. Press PAUSE/CANCEL twice to clear the display. The
machine will drain for 3 minutes before unlocking the door.

3. Unplug washer or disconnect power.

4. Verify wire harness connections to inlet valves, pressure switch,
drain pump and Central Control Unit (CCU).

5. Check all hoses for possible leaks.

6. Plug in washer or reconnect power

7. Verify pressure switch operation.

8. Verify CCU operation by running a Diagnostic Test or any cycle.

If the drain time exceeds 8 minutes the water valves turn off.

NOTES:

After 4 minutes the “Sd” error will be displayed, then
4 minutes later the “F/21” error code will be displayed.

Press PAUSE/CANCEL two times to clear the display.

2. Unplug washer or disconnect power.

3. Check the electrical connections at the pump and make sure
the pump is running.

4. Check the drain pump filter for foreign objects.

5. Plug in washer or reconnect power.

6. If the above does not correct the problem, go to step 7.

7. Unplug washer or disconnect power.

8. Replace the pump.

After 6 failed attempts to lock the door.

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).

If the temperature increase during the first 40 minutes is less
than 86°F (30°C).

2. Check connection to water heater.

3. Check resistance of heating element, if present on this
model. (abnormal = infinity)

4. Check the water temperature sensor and connection to it.

Refer to the Water Temperature Sensor section.

If the water temperature sensor (NTC) value is out of range
(23°F to 217°F[-5°C to 103°C]) during the water-heating step

of the WASH cycle.

NOTE: To find correct Ohm reading refer to the Water
Temperature Sensor section.

2. Check the water temperature sensor and connection to it.

3. Check resistance of heating element, if present on this
model. (abnormal = infinity)

4. Refer to the Water Temperature Sensor section.

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.

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.

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.

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.

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
runs constantly, even if PAUSE/CANCEL is pressed twice and
the display is cleared. Turn off hot and cold water faucets and
unplug the unit before servicing.

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.

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

2. Check wire harness connections to the MCU, the motor, and
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.

If the door unlock has failed 6 times.

Door switch/lock unit failure.

1. Check door switch/lock unit for foreign objects.

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.

When the dispenser motor cannot be driven to its proper
position.

2. Check mechanical linkage from dispenser motor to the top
of the dispenser.

3. Check wire harness connections to the dispenser motor
and Central Control Unit (CCU).

4. Check dispenser motor for powered rotations.

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.

If the condition continues four times, the F31 code will show.

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.

If there is no electrical supply to the Pressure Switch from the

CCU or if the Pressure Switch contacts are worn out, then a

Pressure Switch Failure is displayed

2. Check Pressure Switch for correct working with a
DVM/VOM.

3. To manually check the function of the Pressure Switch,
remove hose from switch and apply air to switch. Audible
clicks will be heard from the switch.

When the connection between pump and the Central Control
Unit (CCU) is lost.

2. Check wire harness connections to the pump and Central
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.

The Motor Control Unit continuously checks for voltage. If
during one wash cycle 4 undervoltages occur then a Motor
Control Unit failure is displayed.

2. Check the wire harness connections to the Motor Control

Unit, Central Control Unit, and Interference Filter.

3. Replace the Motor Control Unit.

If a Central Control Unit Heartbeat Failure is displayed, no
communication is detected from the Central Control Unit to the
User Interface.

2. Check wire harness connections to the User Interface and
the Central Control Unit.

3. Replace User Interface if drum is rotating.

4. Replace Central Control Unit if drum is not moving

If a Central Control Unit Heartbeat Failure is displayed, no
communication is detected from the User Interface to the
Central Control Unit.

2. Check wire harness connections to the User Interface and
the Central Control Unit.

3. Replace User Interface if drum is rotating.

4. Replace Central Control Unit if drum is not moving.

User selected on the UI the unsuppor ted Cycle on the CCU.

Mismatch of User Interface and CCU or corrupted EEPROM.

2. Replace User Interface.
If failure still present:

3. Replace also the CCU.

NOTE: During first power up of new CCU and UI combination, a
bootphase (uploading parameters) will be performed.

WASHER CYCLE

If at the start of the CLEANING WASHER cycle a load is
detected inside the drum.

NOTE: Detects by weight.

DETECTED DURING THE WASH CYCLE)

If suds are detected continuously by the pressure switch during the
drain or spin phases, the washer will fill 4 liters of water and during
5 minutes the unit will rest without tumbling, the water will be drained

and it will try to spin or drain again.

– Run the unit through a RINSE/SPIN cycle.

– Run a NORMAL cycle without adding any detergent.

This should clear the unit of the excess detergent.

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, and Central Control Unit (CCU).

4. Check/clean drain pump filter of foreign objects.

5. Plug in washer or reconnect power.

6. Check drain pump.

7. Check the pressure switch.

8. Verify CCU operation by running a Diagnostic Test or any
cycle.

DETECTED DURING THE WASH CYCLE)

If suds are detected continuously by the pressure switch during the
drain or spin phases, the washer will fill 4 liters of water and during
5 minutes the unit will rest without tumbling, the water will be drained

and it will try to spin or drain again.

Run the unit through a RINSE/SPIN cycle.

Run a NORMAL cycle without adding any detergent.

This should clear the unit of the excess detergent.

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, and Central Control Unit (CCU).

4. Check/clean drain pump filter of foreign objects.

5. Plug in washer or reconnect power.

6. Check drain pump.

7. Check the pressure switch.

8. Verify CCU operation by running a Diagnostic Test or any
cycle.