Test #13: Dry Fan Motor - Whirlpool WFC8090GX Service Manual

WARNING
Electrical Shock Hazard
Disconnect power before servicing.
Replace all parts and panels before operating.
Failure to do so can result in death or
electrical shock.

TEST #13: Dry Fan Motor

This test checks the dry fan motor and wiring.
1. Check the motor and electrical connections by performing
the Service Diagnostic Mode Tests on page 2-3. The
following steps assume that this step was unsuccessful.
2. Unplug washer/dryer or disconnect power.
3. Gently lay washer/dryer on its right side to access the
ACU. Remove AC shield and ACU cover.
4. Visually check that the J7 is inserted all the way into the
ACU.
¾ If visual check passes, go to step 5.
¾ If connector is not inserted properly, reconnect J7 and
repeat step 1.
5. Disconnect connector J7 from the ACU.
6. Using an ohmmeter, measure the resistance across pins 1
and 2 of connector J7.
¾ If the resistance is 40–50 Ω, the dry fan motor and
wiring are good; go to step 8.
¾ If the resistance is open, remove the top panel to
access the dry fan motor (see Figure 1). Check
continuity of the dry fan motor harness between the
ACU and Fan Motor.
DRY FAN MOTOR
DRY FAN MOTOR
L1
RFI-L
J1-2
For Service Technician Use Only
ACU
J7-2
Figure 2 - Dry Fan Motor Strip Circuit
Dry Fan
Motor
7. Disconnect wire connection and measure resistance
between contacts of dry fan motor.
¾ If resistance is 40–50 Ω, go to step 9.
¾ If the resistance is much less or much greater than
40-50 Ω, replace the Heater Channel Assembly.
NOTE: The dry fan motor cannot be replaced
separately from the Heater Channel Assembly.
8. Remove the Heater Channel Assembly.
9. Confirm that the blower wheel is not obstructed and turns
freely.
¾ If the blower wheel is obstructed, remove debris and
re-assemble to washer/dryer.
¾ If the blower wheel is not obstructed but does not
turn freely, replace the Heater Channel Assembly.
NOTE: The dry fan motor cannot be replaced
separately from the Heater Channel Assembly.
¾ If the blower wheel turns freely, replace the ACU.
10. Perform the Service Diagnostic Mode Tests on page 2-3 to
verify repair.
40 - 50 ohms
2 1
M
DRY FAN MOTOR
Whirlpool Smart All-In-One Washer & Dryer
COMPONENT TESTING
Figure 1 - Dry Fan Motor
ACU
J7-1
Fan Motor
Connector
L2
RFI-N
JI-1
3-21
n