PAGE 13
FOR SERVICE TECHNICIAN’S USE ONLY
DO NOT REMOVE OR DES
TROY
9. Remove the bare copper wire terminal from
pin 5 of black drive motor switch. See figure 18.
10. Using figure 18 and the strip circuit on
page 22, check for the resistance values of
the motor’s Main and Start winding coils as
shown in the following table.
NOTE: Main and Start winding coils must be
checked at the motor.
If the resistance at the motor is correct,
there is an open circuit between the motor
and CCU. Go to step 11 to check for belt
switch problem.
If the Start winding resistance is much
greater than 3 ohms, replace the motor.
1
5
3
4
6
2
Main Winding:
Lt. Blue Wire in Back
and Bare Copper Wire
Start
Winding:
Lt. Blue Wire
in Back and
Bare Copper
Wire
Figure 18 - Main and start winding measure points.
Winding
Resistance
in ohms
Contact Points
of Measurement
MAIN
3.3–3.6
Lt. blue wire in back at pin 4
and bare copper wire terminal
removed from pin 5 of black
drive motor switch
START
2.7–3.0
Lt. blue wire in back at pin 4
and bare copper wire terminal
on pin 3 of black drive
motor switch
1
5
3
4
6
2
Belt Switch Pulley
Belt Switch
Lt. Blue
Wires
11. Check the belt switch by measuring
resistance between the two light blue wires,
as shown in figure 19, while pushing up the
belt switch pulley.
If the resistance reading goes from open
to a few ohms as pulley arm closes the
switch, belt switch is good. If not, replace
the belt switch.
If belt switch is good and there is still an
open circuit, check and repair the main
wiring harness.
12. Reassemble all parts and panels.
13. Plug in dryer or reconnect power.
14. Perform the “Quick Diagnostic Test”
through Service Diagnostics to verify repair.
TEST #4: Heat System
3
Quick Check: Heater activation and
related component attributes are provided
in “Service Diagnostics
➔
Component
Activation
➔
Heater 1, Heater 2, and
Heater 1+2” for electric, or “Heat On”
for gas.
This test is performed when either of the
following situations occurs:
3
Dryer does not heat
3
Heat will not shut off
Figure 19 - Checking the belt switch.
