Whirlpool WDC 1070SL, Service Manual

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F71
UI Board cannot detect the CCU
If the CCU does not receive a response
from the UI Board within 70 seconds,
this error code will be displayed.
1. Check the connection between the UI and
the CCU.
2. Check the UI Board.
3. Check the CCU.
F75
Program Start Timeout
If the CCU does not respond to the UI
Board 1 minute after the “Start”
button is pressed, this error will be
displayed.
1. Check the connection between the UI
Board, the Door Lock and the CCU.
2. Check the UI Board.
3. Check the Door Locks.
4. Check the CCU.
F76
Program Pause Timeout
If you touch the Pause button within
one minute, and the UI Board does not
receive a response from the CCU, the
error is displayed.
1. Check the connection between the UI and
the CCU.
2. Check the UI Board.
3. Check the Door Locks.
4. Check the CCU.
F77
Program Restart Timeout
If after the start button is pressed to
resume a program, and the UI Board
does not receive a response from the
control box, the error is displayed.
1. Check the connection between the UI
Board, the door locks and CCU.
2. Check the UI.
3. Check the Door Locks.
4. Check the CCU.
F78
Program Canceled Overtime
If you cancel a program within 10
minutes program, UI does not receive
a response from the CCU, the error is
displayed.
1. Check the connection between the UI, door
locks and the CCU.
2. Check the UI.
3. Check door locks.
4. Check the CCU.
F80
Chip Failure
Programmable chip failure is detected.
Check the CCU.
F81
Fan Motor Temperature Sensor Fault
If the value of the fan motor
temperature sensor (NTC) exceeds the
permitted range.
After five seconds, it will disable the
heating process and cooling program
60 runs for seconds into fault mode.
1. Check connection between the fan motor
NTC and the CCU.
2. Check the NTC resistance.
3. Check the CCU.
F82
Exhaust Temperature Sensor Failure
If the exhaust temperature sensor
(NTC) exceeds the allowable
temperature range for 5 seconds, it
will disable the heating process and
cooling program runs for 60 seconds
into fault mode.
1. Check connection between the Exhaust NTC
and the CCU.
2. Check the NTC resistance.
3. Check the CCU.
F83
Temperature Drying System is Too
High
Drying system temperature sensor
detects that the temperature in the
heating tube even after closing is still
high.
1. Check the connection between the dryer
heating element NTC, fan motor, fan capacitor
and the CCU.
2. Check the heating element NTC, fan motor
and fan capacitor.
3. Check the UI Board.