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TEST #2 Motor Circuit Test
This test will check the wiring to the motor and
the motor itself. The following items are part of
this motor system:
Electric
Gas
Part of Motor System
Dryer
Dryer
Harness/connection
–
Thermal fuse
no
–
Belt/belt switch
–
Drive motor
–
Centrifugal switch
–
Door switch
–
Machine control
–
electronics. See ESD
information.
1. Unplug dryer or disconnect power.
2. Access the machine control electronics
and measure the resistance across P8-4
and P9-1. See Accessing & Removing the
Electronic Assemblies.
•
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.
3. Check the wiring and components in the
path between these measurement points
by referring to the appropriate wiring
diagram (gas or electric).
ELECTRIC DRYER ONLY: Check the
thermal fuse. See TEST #3b.
ALL DRYERS: Continue with step 4 below
to test the remaining components in the
motor circuit.
4. Check the belt switch and drive motor.
Access the belt switch and drive motor by
removing the back panel. Carefully remove
the drum belt from the spring-loaded belt
switch pulley, gently letting the belt switch
pulley down. See Figure 7.
Belt Switch Pulley
Drum
Belt
Figure 7. Carefully remove drum belt.
5. Remove the white connector from the drive
motor switch. See Figure 8.
Drive Motor
Switch
White
Connector
Figure 8. Remove white connector.
Main Winding:
Lt.
Blue Wire in Back
and Bare Copper Wire
Start Winding:
Lt.
Blue Wire
in Back
and
Bare Copper
Wire
Figure 9. Main and start
winding measure points.
6-8
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