Whirlpool WED9500E SERIES Service Manual page 33

Figure 6 - Remove white connector.
9. Remove the bare copper wire terminal from
9. Remove the bare copper wire terminal from pin 5 of black
pin 5 of black drive motor switch. See figure 7.
drive motor switch. See figure 3.
Main Winding:
Lt. Blue Wire in Back
and Bare Copper Wire
Start
Winding:
Lt. Blue Wire
in Back and
Bare Copper
Wire
Figure 3 - Main and start winding measure points
Figure 7 - Main and start winding measure points.
10. Using figure 3 and the strip circuit below, check for the
10. Using figure 7 and the strip circuit on
resistance values of the motor's Main and Start winding
page 20, check for the resistance values of
coils as shown in the following table.
the motor's Main and Start winding coils as
NOTE: Main and Start winding coils must be checked at
shown in the following table.
the motor.
NOTE: Main and Start winding coils must be
Winding Resistance
checked at the motor.
in ohms
MAIN 3.3–3.6
Resistance
Winding
in ohms
MAIN 3.3–3.6
START 2.7–3.0
START 2.7–3.0
¾ If the resistance at the motor is correct, there is an
open circuit between the motor and ACU. Check and
repair the main wiring harness.
¾ If the Main or Start winding resistance is much greater
DO NOT REMOVE OR DESTROY
or less than the values listed in the table above, replace
the motor.
11. If the motor has two capacitors attached as shown in
figure 4 (Maytag only), perform the following. Otherwise,
skip to step 12. Remove and check motor capacitors: each
STRIP CIRCUITS
MOTOR STRIP CIRCUIT
MOTOR CIRCUIT
L1
ACU
BK
J9-2
K1
MOTOR RELAY
HEATER (ELECTRIC)
L1
Door Switch
(Location may vary
For Service Technician Use Only
between models)
9. Remove the bare copper wire terminal from
• Motor Assembly
• Thermal Fuse pin 5 of black drive motor switch. See figure 9a.
• Outlet Thermistor
Main Winding:
• Moisture Sensor Strips
Blue Wire in Back
Figure 16 - Component locations.
and Bare Copper Wire
Start
Winding:
Blue Wire
in Back and
Bare Copper
Wire
Contact Points
Figure 9a - Main and start winding measure points.
of Measurements
10. Using figure 9a and the strip circuit on
Blue wire in back at pin 4
Contact Points
page 25, check for the resistance values of
of Measurement
and bare copper wire terminal the motor's Main and Start winding coils as
Lt. blue wire in back at pin 4
shown in the following table.
removed from pin 5 of black
and bare copper wire terminal
NOTE: Main and Start winding coils must be
removed from pin 5 of black
drive motor switch
checked at the motor.
drive motor switch
Blue wire in back at pin 4
Lt. blue wire in back at pin 4
Resistance
and bare copper wire terminal
and bare copper wire terminal Winding
Black
in ohms
on pin 3 of black drive
Light Blue
on pin 3 of black drive
motor switch
White
MAIN 3.3–3.6
motor switch
Gas Valve, Gas Dryer
START 2.7–3.0
If the resistance at the motor is correct,
there is an open circuit between the motor
and ACU. Check and repair the main wiring
FOR SERVICE TECHNICIAN'S USE ONLY
harness.
If the Main or Start winding resistance is
much greater or less than the values listed
in the table above, replace the motor.
11. If the motor has two capacitors attached
as shown in figure 9b (Maytag only), perform
the following. Otherwise, skip to step 12.
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 9b). The
capacitor connectors are keyed to facilitate
correct connection, and are black on black
for the run capacitor and light green and gray
LBU LBU
for the start capacitor. Contact both leads to
J9-1
check inductance of capacitors. Start capacitor
THERMAL
inductance should be 189–227 µF; run
FUSE
capacitor inductance should be 22.3–24.7
µF. Proper torque is 9–12 Nm for each.
DO NOT REMOVE OR DESTROY
ACU
HEATER RELAY 1
K2
N.O.
page 6, to verify repair.
TEST #4: Heat System
This test is performed when either of the
following situations occurs:
 Dryer does not heat
COMPONENT LOCATIONS
 Heat will not shut off
capacitor can be removed by disconnecting the capacitor
connector and removing the nut on the capacitor end (see
This test checks the components making up
figure 4). The capacitor connectors are keyed to facilitate
Cycle Control
the heating circuit. The following items are
correct connection, and are black on black for the run
Unit (CCU)
part of this system:
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
FOR SERVICE TECHNICIAN'S USE ONLY
Part of Heating System
capacitor inductance should be 22.3–24.7 μF. Proper
Harness/connection
torque is 9–12 Nm for each.
Heater relay
Heat element assembly
Drum Light
Centrifugal switch
Jumper
Outlet thermistor
Compressor thermistor
Machine control electronics
Console electronics and housing Contacts
assembly
1M 2M 3M 5M 6M
Function
Start
Run
12. Reassemble all parts and panels.
13. Plug in dryer or reconnect power.
=
Contacts closed
14. Perform steps under "Service Test Mode", page 2-5, to
Centrifugal Switch (Motor)
verify repair.
Contact Points
of Measurement
White Figure 9 - Component locations.
Blue wire in back at pin 4
and bare copper wire terminal
Light Blue
removed from pin 5 of black
drive motor switch
Blue wire in back at pin 4
and bare copper wire terminal
on pin 3 of black drive
motor switch
DRIVE MOTOR
1/3 HP
MAIN
3.3-3.6
4M
JUMPER 2.7-3.0
START
Figure 7 - Motor Strip Circuit
Whirlpool & Maytag 9.2 Cu. Ft. Steam Dryer
DO NOT REMOVE OR DESTROY
HEATER 1
V
COM1
FOR SERVICE TECHNICIAN'S US
COMPONENT TESTING
Electric
Dryer
ü
ü
ü
NOTE: Refer to Figure 10b, page 17,
ü
Assembly
for gas dryer component locations.
ü
ü
ü
ü
Figure 4 - Motor Capacitors (some models)
Figure 9b - Motor capacitors.
Auxiliary
12. Reassemble all parts and panels. Fan
13. Plug in dryer or reconnect power.
14. Perform steps under "Service Test Mode",
page 3, to verify repair.
Pluggable Drive Motor Switch
TEST #4: Heat System
Lt. Blue White
This test is performed when either of the
Green-Yellow
following situations occurs:
 Dryer does not heat
Red
 Heat will not shut off
This test checks the components making up
the heating circuit. The following items are
part of this system:
Figure 5 - Pluggable Drive Motor Switch
Pluggable Drive Motor Switch
Part of Heating System
Centrifugal Switch (Motor)
Harness/connection
Heater relay
Contacts
Thermal cut-off
1M 2M 3M 5M 6M
Function
High limit thermostat
DO NOT REMOVE OR DESTROY
Heat element assembly
Start
Gas valve assembly
Run
Centrifugal switch
=
Contacts closed
Outlet thermistor
Figure 6 - Centrifugal Switch Contacts
Inlet thermistor
Centrifugal Switch (Motor)
Machine control electronics
Console electronics and housing
assembly
Gas supply
CENTRIFUGAL
NOTE: On the gas dryer, the inlet thermistor
SWITCH
is located at the drum inlet vent. Refer to strip
circuit on page 25 to diagnose heater system.
5M
Dryer does not heat:
RUN CAP .
Locate the components using figures 10a
23 uF
and 10b (page 18). To access heater system
3M 6M
START CAP .
components, remove the console, top panel,
189 uF
See Heater Circuit
(on some models)
and front panel.
CENTRIFUGAL SWITCH
5M
N.C.
• Water Nozzle
• Water Valve
• Thermal Cut-off
• Inlet Thermistor (Electric)
• High Limit Thermostat
• Heater Assembly
Red-White For internal co
Electric Gas
Dryer Dryer
ü ü
ü ü
ü ü
ü ü
ü
no
ü
no
ü ü
ü ü
ü ü
ü ü
ü ü
ü
no
N
LBU
2M
N.O.
BU W
DOOR
SWITCH
1M
3-11
n
L2
2M
User Int
(U
Ligh
Plugg