Whirlpool WGD6400SW0 Technische informatie - Pagina 6
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TECH SHEET - DO NOT DISCARD
TROUBLESHOOTING TESTS
NOTE: These checks are done with the
dryer unplugged or disconnected from
power.
TEST #1 Supply Connections
This test should only be done after
confirming proper voltage at the outlet.
1. Unplug dryer or disconnect power.
2. Remove the cover plate from the back
of the dryer. See figure 3.
Cover
Plate
Remove
Screw
Figure 3. Remove the cover plate.
3. Check that the power cord is firmly
connected to the dryer's wire harness.
See figure 4.
Wire Harness
Figure 4. Power cord-to-wire harness
connection.
4. Access the machine control electronics
without disconnecting any wiring to the
control board. See Accessing &
Removing the Electronic Assemblies,
page 11.
5. With an ohmmeter, check for continuity
between the neutral (N) terminal of the
plug and P8-3 (white wire) on the
machine control board. The left-hand
side of figure 5 shows the position of the
neutral terminal (N) on the power cord
plug. Also see figure 16, page 11.
If there is continuity, go to step 6.
If there is no continuity, disconnect
the white wire of the harness from
the power cord at the location
illustrated in figure 4. Test the
continuity of the power cord neutral
wire as illustrated in figure 5. If an
FOR SERVICE TECHNICIAN'S USE ONLY
open circuit is found, replace the
power cord. Otherwise, go to step 6.
Power Cord
Plug
N
L1
G
Figure 5. Plug-to-terminal connections.
6. In a similar way, check the continuity
between the L1 terminal of the plug
and P9-2 (black wire) on the control
board. See figure 16, page 11.
If there is continuity, go to step 8.
If there is no continuity, check the
continuity of the power cord in a
similar way to that illustrated in
figure 5, but for power cord's L1
wire.
If an open circuit is found, replace the
power cord. Otherwise, go to step 7.
7. Replace the main harness.
8. Visually check that the P5 connector is
inserted all the way into the machine
control electronics.
9. Visually check that the user interface
assembly is properly inserted into the
front console.
10. If both visual checks pass, replace the
user interface assembly.
11. Plug in dryer or reconnect power.
Power Cord
12. Perform the Console Buttons and
Indicators Diagnostic test, page 1, to
verify repair.
13. If indicators still do not light, the
machine control electronics has failed:
Unplug dryer or disconnect power.
Replace the machine control
electronics.
Plug in dryer or reconnect power.
Perform the Console Buttons and
Indicators Diagnostic test, page 1 to
verify repair.
TEST #2 Machine Control
Power Check
This test is used to determine if power is
present at the machine control electronics.
NOTE: The drum light is controlled by the
machine control on all models.
1. Plug in dryer or reconnect power.
2. Open the door.
COM
L1
N
G
TEST #3 Drive Motor Circuit
This test will check the wiring to the motor
and the motor itself. The following items
are part of this motor system:
–
–
–
1. Unplug dryer or disconnect power.
2. Access the machine control electronics
3. Check the wiring and components in
4. Check the belt switch and drive motor.
Figure 6. Slowly remove drum belt.
5. Remove the white connector from the
If the drum light illuminates, then
power is present at the machine
control. Go to TEST #6, page 9.
If the drum light fails to illuminate,
do not assume the machine control
electronics needs replacement.
Several conditions may cause the
drum light not to illuminate, including
a bad bulb. If the drum light does not
illuminate, go to TEST #1.
Harness/
–
Centrifugal switch
connection
Door switch
–
Belt/belt
–
Machine control
switch
electronics. See
Drive motor
ESD information,
page 1.
and measure the resistance across
P8-4 and P9-1. See Accessing &
Removing the Electronic Assemblies,
page 11.
If resistance across P8-4 and P9-1 is
in the range of 1 to 6 ohms, replace
the machine control electronics.
Otherwise, go to step 3.
the path between these measurement
points by referring to the appropriate
wiring diagram and strip circuit,
pages 4 and 5.
Access the belt switch and drive motor
by removing the front panel/drum
assembly. See Removing the Front
Panel/Drum Assembly, page 10. Slowly
remove the drum belt from the
spring-loaded belt switch tension
pulley, gently letting the pulley down.
See figure 6.
Belt Switch
Belt Switch
Tension Pulley
Drum Belt
drive motor switch. See figure 7,
page 7.
PART NO. W10054160
PAGE 6