Dexter Laundry Wn0600ea-13en2x-sskcs-usx, Parts & Service Manual

Page: 46 / 159

Symptom Probable Cause Suggested Remedy
Machine
starts but
will not
advance in
cycle (cont.)
CPU Board, Ribbon
Cable, or Input/Out-
put Board
Check Input/Output PCB for( red output LED will not light for
water valve and drain valve #4,5,6,7,8, . If no output lights illumi-
nated, check single red light on CPU board. Single red light should
be illuminated. If light is flashing or not on, remove power from
washer for 2 minutes to reset board. Reapply power to washer
and check red CPU light. If on solid, CPU okay. If still flashing
or not on, replace CPU board. If CPU tests okay, change Ribbon
Cables between CPU and input/output board. (Check GREEN input
LED #14 tub empty has lit in a drain mode of formula.) (Make sure
Green input #13 or #14 are lit if Fill portion of formula is being
called for.) If red drain valve or water valve output light on Input/
Output PCB is lit, check to insure that 120VAC is going from the
Input/Output PCB to the drain valve or water valve. If no voltage,
replace I/O PCB.
Machine
tumbles in
only one
direction
Variable Frequency
Drive
Check blue and orange wires on variable frequency drive for al-
ternating 0V to 24 VDC for forward and reverse direction from the
Input/Output PCB. If no voltage, see CPU board, Ribbon Cable or
Input/Output PCB below. Be sure to check wire connec
tions at drive.
CPU Board, Ribbon
Cable, or Input/Out-
put Board
Check Input/Output PCB for alternating or Input/Output PCB red
output lights for forward #13 and reverse #14. If no red output
lights illuminated, check single red light on CPU board. Single red
light should be illuminated. If light is flashing or not on, remove
power from washer for 2 minutes to reset board. Reapply power
to washer and check red CPU light. If on solid, CPU okay. If still
flashing or not on, replace CPU board. If CPU tests okay, change
Ribbon Cables between CPU and Input/Output PCB. (If red
forward #13 and reverse #14 output lights on the Input/Output
PCB are illuminated, check to insure that 24VDC is going from the
Input/Output PCB to the variable frequency drive. (SEE WASHER
SCHEMATIC FOR TROUBLESHOOTING VFD.) If no
voltage, replace I/O PCB.
Washes but
does not give
intermediate
spin
Pressure Switch Pressure switch must be in the empty position to give close the
circuit to the Input/0utput PCB. The green input tub empty light
#14 on the Input/Output PCB must be lighted. Check pressure
switch for continuity across terminals indicating pressure switch
has reset to empty.
Variable Frequency
Drive
Check Variable Frequency Drive
Check all wires on drive to insure a good connection.
Check LED display at VFD before powering down
1) Disconnect power to washer for 2 minutes to reset motor
drive. Reconnect to power and check for LED display on VFD
2) Check incoming power to washer for correct voltage. Line volt-
age out of the specified operating range will cause the drive to
fault.
Part # 8533-097-001 11/16
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