
PAGE 18
FOR SERVICE TECHNICIAN’S USE ONLY
DO NOT REMOVE OR DESTROY
Water Temperature Controls
Heating Element – Test #10
Temperature Sensor – Test #11
TEST #10: Heating Element
This test checks the heating 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 on page 12.
4.
Using an ohmmeter, measure the resistance
across pins 1 and 2 of connector
HE2
.
If the resistance is between 10-20
Ω
, the
heating element and wiring are good; go
to step 8.
If the resistance is open, go to step 5.
5.
Access the heating element.
6.
Disconnect the wire connectors from the
heating element.
7.
Using an ohmmeter, measure the
resistance across the two heating element
terminals.
If the resistance is between 10-20
Ω
, the
heating element is good; replace the lower
main harness.
If the resistance is open, replace the
heating element.
8.
If the preceding steps did not correct the
heating element 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 #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 on page 12.
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.
If the resistance is within the range shown
in the table, go to step 8.
If the resistance is infinite or close to zero,
go to step 5.
5.
Remove the front panel to access the
heating element.
6.
Disconnect the temperature sensor
connector from the heating element.
7.
Using an ohmmeter, measure the
resistance across pins 1 and 2 of the
temperature sensor (on the heating element).
If the resistance is within the range shown
in the table above, the sensor is good;
replace the lower main harness.
If the resistance is open, replace the
temperature sensor.
8.
If the preceding steps did not correct the
temperature sensor 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.
Temperature Sensor
Figure 13 - Heater & Temperature Sensor
Heater Terminal
Heater Terminal
Approx. Resistance
F°
C°
K
32
0
35.9
50
10
22.8
68
20
14.8
86
30
9.8
104
40
6.6
122
50
4.6
140
60
3.2
158
70
2.3
176
80
1.7
194
90
1.3
Approx. Temperature