Whirlpool Duet Sport WED8300SW Manual page 81

Electronic gas & electric dryers
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6. Using Figure 9, check for the resistance
values of the motor’s Main and Start
winding coils as shown below.
NOTE: Main and Start winding coils must
be checked at the motor.
WINDING RESISTANCE
CONTACT POINTS
(Ω)
OF MEASUREMENT
Lt. blue wire in back at
pin 4 and bare copper
MAIN
2.4–3.6 Ω
wire on pin 5 of black
drive motor switch
Lt. blue wire in back at
pin 4 and bare copper
START
2.4–3.8 Ω
wire on pin 3 of black
drive motor switch
If the resistance at the motor is correct,
there is an open circuit between the
motor and machine control electronics.
Check for failed belt switch.
7. Check the belt switch by measuring resis-
tance between the two light blue wires, as
shown in Figure 10, while pushing up the
belt switch pulley.
Lt. Blue
Wires
Belt Switch
Belt Switch
Pulley
Figure 10.
Checking the belt switch.
If the resistance reading goes from infinity
to a few ohms as pulley arm closes the
switch, belt switch is OK. If not, replace
the belt switch.
If belt switch is OK and there is still an
open circuit, check and repair the wiring
harness.
If the Start winding is in question and the
resistance is much greater than 4 ohms,
replace the motor.
8. Door Switch problems can be uncovered
in the Door Switch Diagnostic Test; how-
ever, if this was not done, the following
can be done without applying power to the
dryer. Connect an ohmmeter across P8-3
(neutral, white wire) and P8-4 (door, tan
wire).
With the door properly closed, the ohm-
meter should indicate a closed circuit
(0–2 ohms).
If not, replace the door switch assembly.
TEST #3 Heater Test
This test is performed when either of the
following situations occur:
Dryer does not heat
Heat will not shut off
This test checks the components making up
the heating circuit. The following items are
part of this system:
Electric
Gas
Part of Heating System
Dryer
Dryer
Harness/connection
Heater relay
Thermal cut-off
Thermal fuse
no
High limit thermostat
Heat element assembly
no
Gas burner assembly
no
Centrifugal switch
Exhaust thermistor
Machine control
electronics. See ESD
information.
Console electronics
and housing assembly
Gas supply
no
Dryer does not heat:
Locate the components using Figure 11.
6-9

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