Whirlpool WFW94HEX Technical Education page 73

COMPONENT TESTING (continued)
FOR SERVICE TECHNICIAN'S USE ONLY
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 Diagnos�c Test"
to verify repair.
Water Temperature Controls
3 Hea�ng Element – Test #10
3 Temperature Sensor – Test #11
TEST #10: Hea�ng Element
This test checks the hea�ng element, wiring,
and CCU.
1. Unplug washer or disconnect power.
2. Remove top panel to access machine
electronics.
3. Disconnect connector HE2 from the CCU.
Refer to CCU diagram.
4. Using an ohmmeter, measure the resistance
across pins 1 and 2 of connector HE2 .
� If the resistance is between 10-20 Ω, the
hea�ng element and wiring are good; go
to step 8.
� If the resistance is open, go to step 5.
5. Access the hea�ng element.
6. Disconnect the wire connectors from the
hea�ng element.
7. Using an ohmmeter, measure the
resistance across the two hea�ng element
terminals.
� If the resistance is between 10-20 Ω, the
hea�ng element is good; replace the lower
main harness.
� If the resistance is open, replace the
hea�ng element.
8. If the preceding steps did not correct the
hea�ng element problem, replace the CCU.
� Unplug washer or disconnect power.
� Replace the CCU.
� Reassemble all parts and panels.
� Perform the "Quick Diagnos�c Test"
to verify repair.
Temperature Sensor
Heater Terminal
Figure 7 - Heater & Temperature Sensor
TEST #11: Temperature Sensor
This test checks the temperature sensor,
wiring, and CCU.
1. Unplug washer or disconnect power.
2. Remove top panel to access machine
electronics.
3. Disconnect connector SET2 from the CCU.
Refer to CCU diagram.
4. Using an ohmmeter, measure the
resistance across pins 1 and 2 of temperature
sensor connector SET2. The measured
resistance should be within the temperature
range shown in the following table.
Approx. Temperature
F° C°
32 0
50 10
68 20
86 30
104 40
122 50
140 60
158 70
176 80
194 90
5-14
GND
(not used)
Heater Terminal
Approx. Resistance
K Ω
35.9
22.8
14.8
9.8
6.6
4.6
3.2
2.3
1.7
1.3