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5-9
FOR SERVICE TECHNICIAN’S USE ONLY
COMPONENT TESTING (continued)
IMPORTANT:
A guide (W10271535) is
required to assemble the rotor onto the sha�.
W10271535 is inserted into the threaded hole,
and then the rotor is slid on over the guide.
NOTE: If the harness between the CCU and
MCU is removed or communica�ons are
interrupted during opera�on, the MCU puts
the motor into a braking mode, resul�ng in a
significant drag on the drum when turned by
hand. This mode can be cleared by removing
power from the washer for a few seconds.
1. Check the motor and electrical connec�ons
by performing the “Quick Diagnos�c Test” on
pages 5–6. The following steps assume that
this step was unsuccessful.
2. Unplug washer or disconnect power.
3. Check to see if basket will turn freely.
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If basket turns freely, go to step 4.
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If basket does not turn freely, determine what
is causing the mechanical fric�on or lockup.
4. Remove the top and rear panels to access
the machine electronics and motor components.
5. Visually check that connectors MS2 and MI3
are inserted all the way into the CCU. Refer to
CCU diagram.
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If visual checks pass, go to step 6.
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If visual checks fail, reconnect MS2 and
MI3, and repeat step 1.
6. Visually check that all connectors are inserted
all the way into the MCU (see Figure 4).
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If visual checks pass, go to step 7.
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If visual checks fail, reconnect the
MCU connectors and repeat step 1.
7. Check the motor windings. Disconnect the
motor harness from the MCU. With an ohmmeter,
verify the resistance values as shown below:
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If the values are outside the range or open,
replace stator assembly; otherwise, reconnect
the motor harness and go to step 8.
8. Check the two harnesses between the
CCU and MCU for con�nuity.
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If there is con�nuity, go to step 9.
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If there is no con�nuity, replace the main
lower harness.
9. With a voltmeter set to AC, connect the
leads across pins 1 and 2 of connector MS2.
10. Plug in washer or reconnect power.
11. Run the “Quick Diagnos�c Test” on pages
5–6.
IMPORTANT:
Door must be closed and
locked to run motor.
12. When the test shows “C05 & C08” on the
display, the motor is powered and line voltage
from the CCU should be present across pins
1 & 2 of connector MS2.
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If line voltage is present, replace the MCU.
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If line voltage is not present, replace the CCU.
13. Unplug washer or disconnect power.
14. Reassemble all parts and panels.
15. Perform the “Quick Diagnos�c Test”
to verify repair.
TEST #4: Door Lock System
Perform the following checks if the washer
does not lock (or unlock).
1. Check lid lock mechanism for obstruc�on
or binding. Repair as necessary.
2. Unplug washer or disconnect power.
3. Remove top panel to access machine
electronics.
4. Visually check that the DL3
, DLS2, and
DCS3 connectors are inserted all the way into
the CCU. Refer to CCU diagram.
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If visual check passes, go to step 5.
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If any of the connectors are not inserted
properly, reconnect and retest door lock.
5. Referring to the chart below, disconnect
the specified connectors from the CCU. With
an ohmmeter, verify resistance values listed
in the chart. NOTE: To measure the door lock
switch in the “locked” posi�on, plug in washer
or reconnect power. Press the POWER bu�on,
select any cycle, and then press START.
Actua�on of the door lock solenoid should be
heard. At that point, unplug the washer and
disconnect DLS2 from the CCU and measure
resistance across pins 1 & 2.
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If resistance values are good, go to step 6.
Motor Harness
Windings (
Ω
)
Pins 1 & 2
8.5 - 14.0
Ω
Pins 2 & 3
8.5 - 14.0
Ω
Pins 1 & 3
8.5 - 14.0
Ω
Component
Door Switch
DCS3-1 DCS3-3
DL3-1
DL3-2
DL3-2
DL3-3
Door Lock
Switch
DLS2-1 DLS2-2
Locked = 0 ohms
Unlocked = Open Circuit
Resistance
63 ohms
Door Lock
Coils
Contacts
Measured
DOOR LOCK RESISTANCE
Door Closed = 0 ohms
Door Open = Open Circuit
63 ohms
Содержание WFW94HEX Series
Страница 61: ...5 2 FOR SERVICE TECHNICIAN S USE ONLY COMPONENT TESTING continued ...
Страница 76: ...5 17 NOTES ...
Страница 83: ...7 1 WIRING DIAGRAMS WASHER NON STEAM ...
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