3.
Locate the two metal sensor strips on the
face of the lint screen housing. Bridge
these strips with a wet cloth or finger.
•
If a beep tone is heard and a software
revision number is displayed on the
console, the sensor passes the test.
Go to step 4.
•
If not, unplug dryer or disconnect pow-
er.
•
Access the moisture sensor wires by
removing the front panel. See Remov-
ing the Front Panel/Drum Assembly.
Disconnect the sensor wires from the
harness. See Figure 11. Go to step 8.
4.
Unplug dryer or disconnect power.
5.
Access the machine control electronics.
See Accessing & Removing the Electronic
Assemblies. Remove the connector P13
from the circuit board. Measure the resis-
tance across terminals 1 (yellow-red wire)
and 2 (yellow-red wire). See Figure 16.
•
If the ohmmeter does not indicate (in-
finity) open circuit, go to step 6.
•
Otherwise, measure the resistance be-
tween pins 1 and 2 of connector P13
on the machine control board. If a re-
sistance less than 1 megohm is mea-
sured (with analog or digital ohmmeter),
inspect the control board for any debris
bridging these pins. If no debris, replace
the machine control electronics.
Lint Screen
Housing
Disconnect sensor from wire harness.
Figure 11.
Harness
with MOVs
Harness
Connection
6-13
6.
Access the moisture sensor by removing
the front panel. See Removing the Front
Panel/Drum Assembly. Disconnect the
sensor from the wire harness. See Fig-
ure 11, and refer to the wiring diagram
and strip circuit in Section 7.
7.
Measure the resistance across the outer-
most contacts of the cable that includes
the two MOVs.
•
If a small resistance is measured, re-
place the moisture sensor and harness
with MOVs.
•
Otherwise go 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 mea-
sured, replace the moisture sensor and
harness with MOVs.
9.
If moisture sensor diagnostic test pass-
es, check the thermistor: Perform TEST
#4a.
•
If the problem persists after replac-
ing the moisture sensor, harness with
MOVs and thermistor, replace the ma-
chine control electronics.
TEST #6 Buttons and Indicators
This test is performed when any of the follow-
ing situations occurs during the Console But-
tons and Indicators Diagnostic Test:
•
None of the indicators light up
•
No beep sound is heard
•
Some buttons do not light indicators
None of the indicators light up:
1.
See Diagnostic Guide/Before Servicing.
2.
Perform TEST #1, to verify supply con-
nections.
3.
Perform TEST #2.