Whirlpool WTW4800XQ Technical Manual page 16

FOR SERVICE TECHNICIAN'S USE ONLY
 If the capacitor is either shorted or open,
replace capacitor, calibrate, and repeat step 1.
16. If the preceding steps did not correct the
motor problem, replace the main control.
a. Unplug washer or disconnect power.
b. Replace the main control.
c. Reassemble all parts and panels.
d. Plug in washer or reconnect power. Calibrate
washer and perform Automatic Test to verify repair.
TEST #4: Console and Indicators
Console and Indicators Check:
This test is performed when any of the
following situations occurs during "UI Test
Mode" on page 4.
3 None of the LEDs light up
3 One or more Status LEDs are flashing
3 Turning rotary switch does not toggle LED
None of the LEDs light up:
1. Unplug washer or disconnect power.
2. Access the main control and visually check
that ALL connectors are inserted all the way
into their respective headers.
3. Visually check that the main control
assembly is properly inserted in the console.
4. If both visual checks pass, follow procedure
under TEST #1, "Main Control" on page 12 to
verify supply voltages.
5. To verify repair, activate the Service
Diagnostic Mode, and then perform UI Test
Mode on page 4.
One or more Status LEDs are flashing:
If one or more of the status LEDs are flashing
(on and off in 0.5 second intervals), refer to
the following notes to identify the switch(es)
in question. Reference the appropriate wiring
diagrams on pages 20-21 when performing
the following procedures.
a. Verify the switch connector is inserted
all the way into the main control.
b. Check the harness between the switch and
main control for continuity. Check for shorts.
c. Replace the switch.
d. Replace the main control.
NOTE 1: The number and location of rotary
switches varies between makes and models.
NOTE 2: Regardless of location, switches are
read from left to right (not counting the pressure
switch), the left-most switch being #1.
PAGE 16
NOTE 3: Each rotary switch and the cycle
selector knob is represented by the following
status LEDs:
• Rotary Switch #1 - toggles (1) Fill LED
• Rotary Switch #2 - toggles (2) Wash LED
• Rotary Switch #3 - toggles (3) Rinse LED
• Rotary Switch #4 - toggles (4) Spin LED
• Cycle Select Knob - toggles (5) Done LED
NOTE 4: Status LED names may vary between
makes and models. Use LED # identification.
(1)Fill (2)Wash (3)Rinse (4)Spin (5)Done
Turning rotary switch does not toggle LED:
Perform the procedures under "One or more
Status LEDs are flashing."
TEST #5: Temperature Thermistor
This test checks valves, main control,
temperature thermistor, and wiring.
1. Check the cold valve by performing Cold
Valve test under Manual Test Mode on page 9.
 If cold water is being dispensed, proceed
to step 2.
 If hot water is being dispensed, verify
proper hose connection.
2. Check the hot valve by performing Hot
Valve test under Manual Test Mode on page 9.
 If hot water is being dispensed, proceed
to step 3.
 If cold water is being dispensed, ensure
that household hot water is present.
3. Unplug washer or disconnect power.
4. Remove console to access main control.
5. Remove connector J3 from the main
control. With an ohmmeter, measure the
resistance of the temperature thermistor
between pins J3-9 and J3-10. Verify that the
approximate resistance, shown in the following
table, is within ambient temperature range.
DO NOT REMOVE OR DESTROY