Whirlpool WDC 1070SL Service Manual page 31

Unable To Unlock
FdU
If the machine cannot be unlocked
after 5 attempts, this error will display.
Unable To Lock The Door
F13
If the machine cannot lock the door,
after 5 attempts, this error will display.
Water Level Sensor Failure
F23
If it is detected L0 and L1 in the same
state, the error is displayed.
Overflow
After the water level sensor detects
the water level exceeds 280mm within
the drum, the drain pump turns on for
F24
30 seconds. If overflow is detected 4
times within the washing stage, this
error code will display.
MCU Heat Sink Temperature is too
F31
High
If the motor control box heat sink
temperature is too high, this error will
appear on the display.
The machine detects clothes loaded
rL
inside the drum during "Clean Washer"
program.
Motor Bus Voltage Is High
F43
MCU detects that the voltage supplied
into the motor is too high, this causes
the MCU to shut down and eventually
display this error.
CCU cannot detect the UI Board
F70
If the UI Board does receive a response
from the CCU within 35 seconds, this
error code will be displayed.
1. Check the wiring harness between the door
lock and the CCU.
2. Check the door lock.
3. Check the CCU.
1. Check the wiring harness between the door
and the CCU.
2. Check the door lock.
3. Check the CCU.
1. Check the resistance of the water level
sensor wiring harness connector.
2. Check the wiring harness connector
between the water level sensor and the CCU.
3. Run the diagnostic routine, if there is water
level sensor failure, the display should show
F23.
4. Check the CCU.
1. Check the drain pump and drain hose to
ensure that it is not blocked.
2. Check the wiring harness connectors
between the drain pump, water level switch
and the CCU.
3. Check the drain pump.
4. Check whether the inlet valve is closing
properly.
5. Check if the water level switch is working
properly.
6. Check the control panel.
1. Check the connection between the motor
and the CCU.
2. Check the motor.
3. Check the CCU
Check whether there is really a piece of
clothing inside the machine, if so, remove it
and then press "Start" to continue the "Clean
Washer" program.
1. Check the voltage supply on the customer's
power outlet.
2. Check the connection between the MCU
and the CCU.
3. Check the motor.
4. Check the CCU.
1. Check the connection between the UI and
the CCU
2. Check the UI Board.
3. Check the CCU.