Whirlpool W10254428A Manual page 17

FOR SERVICE TECHNICIAN'S USE ONLY
6. Remove connector DP2 from the CCU.
With an ohmmeter, measure the resistance
across pins 1 and 2.
7. Resistance should be approximately 16 Ω.
If the reading is infinite (open), go to step 8.
If the reading is correct, go to step 12.
8. Remove the front panel to access drain
pump. Verify pump is free from obstructions.
9. Visually check the electrical connections
at the drain pump.
If visual check passes, go to step 10.
If connections are loose, reconnect the
electrical connections and repeat step 2.
10. With an ohmmeter, check harness for
continuity between the drain pump and CCU.
If there is continuity, go to step 11.
If there is no continuity, replace the lower
machine harness and repeat step 2.
11. With an ohmmeter, measure the resistance
across the two pump terminals. Resistance
should be approximately 16 Ω.
If the reading is infinite (open), replace the
drain pump assembly.
If the reading is correct, go to step 12.
12. If the preceding steps did not correct the
drain problem, replace the CCU.
Unplug washer or disconnect power.
Replace the CCU.
Reassemble all parts and panels.
Perform the "Quick Diagnostic Test"
on pages 4–5 to verify repair.
TEST #9: Flow Meter
This test checks the electrical connections
to the flow meter and the flow meter itself.
1. Perform the "Quick Diagnostic Test" on
pages 4–5. If error code F8E4 is generated,
the washer is detecting less than 0.1L of
water after 30 seconds of starting the test.
Go to step 2.
2. Did the valve(s) turn on and was water
seen and heard entering the drum?
No, the valve(s) did not turn on.
Go to TEST #6: Water Inlet Valves.
DO NOT REMOVE OR DESTROY
Yes, the valve(s) turned on, but no water
entered the drum. Go to step 3.
Yes, the valve(s) turned on and water
entered the drum. Go to step 4.
3. Verify that the hot and cold water inlet
hoses are properly connected to the washer
and the valves are turned on fully. Ensure the
inlet hoses are not kinked or inlet screens
blocked.
4. Unplug washer or disconnect power.
5. Remove top panel to access machine
electronics.
6. Visually check that connector FM3 is
inserted all the way into the CCU. Refer
to CCU diagram on page 12.
If visual check passes, go to step 7.
If connector is not inserted properly,
reconnect FM3 and repeat step 1.
7. With an ohmmeter, check the harness
between the CCU (FM3) and flow meter
for continuity.
If there is continuity, go to step 8.
If there is no continuity, replace the flow
meter harness.
8. With voltmeter set to DC, connect leads
to FM3 pins 1 and 3. Run a wash cycle and
measure the flow meter voltage when the inlet
water valves open and water is entering the
washer. A nominal reading of approximately
200mV should be measured when water
is flowing through the flow meter (voltage
will vary depending on household water
pressure). No water flowing = 0V.
If voltage is present, the flow meter is
working properly. Go to step 9.
If voltage is not present when water is
entering the washer, replace the flow meter.
9. If the preceding steps did not correct the
drain problem, replace the CCU.
Unplug washer or disconnect power.
Replace the CCU.
Reassemble all parts and panels.
Perform the "Quick Diagnostic Test"
on pages 4–5 to verify repair.
PAGE 17