Maytag W10393006 Service Manual page 18

FOR SERVICE TECHNICIAN'S USE ONLY
10. Unplug dryer or disconnect power.
11. Reassemble all parts and panels.
12. Plug in dryer or reconnect power.
13. Perform steps under "Install Diagnostics",
page 5, to verify repair.
TEST #5: Moisture Sensor
This test is performed when an automatic cycle
stops too soon, or runs much longer than expected.
NOTE: Dryer will shut down automatically
after 2½ hours.
The following items are part of this system:
Part of Moisture System
Harness/connection
Metal sensor strips
Machine control electronics
1. Activate the Service Diagnostic Mode and
then select the User Interface/Control System
Test. See procedures on page 4.
2. Open the door. Using a wet cloth or one
finger, jointly touch both sensor strips.
 If a repeating beep tone is heard and an
alphanumeric number is displayed on the
console, the moisture sensor passes the
test. Go to step 9.
 If a beep tone is not heard, or a repeating
beep tone is heard before touching both
moisture strips, continue with step 3.
NOTE: Overdrying may be caused by a short
circuit in the sensor system.
3. Unplug dryer or disconnect power.
4. Remove console to access the CCU
and User Interface (UI).
5. Access the moisture sensor wires by
removing the front panel. Disconnect the
3-wire moisture sensor connector (see
Figure 14).
6. Access the CCU and remove connector
P13 from the circuit board. Check the wire
harness for continuity between P13 and the
moisture sensor connector.
 If there is continuity, go to step 7.
 If there is no continuity, or if a short is
detected, replace the main harness.
PAGE 18
Electric Gas
Dryer Dryer
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7. Measure the resistance
across the outermost
contacts of the connector
that includes the two MOVs.
 If any resistance is measured, clean the two
 If the reading is open, continue to step 8.
8. Measure the resistance
across each of the outermost
contacts and the center
terminal (ground connection).
 If a resistance less than infinity is
9. If the moisture sensor diagnostic test
passes, check the outlet thermistor: TEST #4a,
page 15.
 If the problem persists after replacing the
10. If the preceding steps did not correct the
problem, replace the CCU.
Lint Screen
Housing
Figure 14 - Disconnect sensor connector.
metal moisture strips inside the drum. If
any resistance is measured after cleaning,
replace the sensor harness.
measured, replace the sensor harness.
moisture sensor and thermistor, consider
adjusting the dryness level (see TEST #5a:
Adjusting Customer-Focused Dryness Level,
page 19).
DO NOT REMOVE OR DESTROY
Sensor
Sensor Harness
with MOVs
(Metal Oxide
Varistors)
Sensor
Connector