Whirlpool Cabrio Service Manual page 16

FOR SERVICE TECHNICIAN'S USE ONLY
10. Using figure 9a and the strip circuit on
page 24, 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.
Resistance
Winding
in ohms
MAIN 3.3–3.6
START 2.7–3.0
 If the resistance at the motor is correct,
there is an open circuit between the motor
and ACU. Go to step 11 to check for belt
switch problem.
 If the Main or Start winding resistance is
much greater or less than the values listed
in the table above, replace the motor.
11. Check the belt switch by measuring
resistance between the two light blue wires,
as shown in figure 9b, while pushing up the
pulley.
Lt. Blue
Wires
Pulley
Figure 9b - Checking the belt switch.
 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. If the motor has two capacitors attached
as shown in figure 9c, perform the following.
Otherwise, skip to step 13. Remove and
check motor capacitors: each capacitor can
be removed by disconnecting the capacitor
connector and removing the nut on the
capacitor end (see figure 9c). The capacitor
connectors are keyed to facilitate correct
connection, and are black on black for the
PAGE 16
Contact Points
of Measurement
Lt. blue wire in back at pin 4
and bare copper wire terminal
removed from pin 5 of black
drive motor switch
Lt. blue wire in back at pin 4
and bare copper wire terminal
on pin 3 of black drive
motor switch
Belt Switch
run capacitor and light green and gray for the
start capacitor. Contact both leads to check
inductance of capacitors. Start capacitor
inductance should be 189–227 µF; run
capacitor inductance should be 22.3–24.7
µF. Proper torque is 9–12 Nm for each.
Figure 9c - Motor capacitors.
13. Reassemble all parts and panels.
14. Plug in dryer or reconnect power.
15. Perform steps under "Service Test Mode",
page 6, to verify repair.
TEST #4: Heat System
This test is performed when either of the
following situations occurs:
3 Dryer does not heat
3 Heat will not shut off
This test checks the components making up
the heating circuit. The following items are
part of this system:
Part of Heating System
Harness/connection
Heater relay
Thermal cut-off
Thermal fuse
High limit thermostat
Heat element assembly
Gas valve assembly
Centrifugal switch
Outlet thermistor
Inlet thermistor
Machine control electronics
Console electronics and housing
assembly
Gas supply
DO NOT REMOVE OR DESTROY
Electric Gas
Dryer Dryer
no
no
no
no