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5-1
COMPONENT TESTING
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.
Before testing any of the components, perform
the following checks:
Control failure can be the result of corrosion
•
on connectors. Therefore, disconnecting
and reconnecting wires will be necessary
throughout test procedures.
All tests/checks should be made with a
•
VOM or DVM having a sensitivity of 20,000
ohms-per-volt DC, or greater.
Check all connections before replacing
•
components, looking for broken or loose
wires, failed terminals, or wires not pressed
into connectors far enough.
Resistance checks must be made with pow-
•
er cord unplugged from outlet, and with wir-
ing harness or connectors disconnected.
Unless stated otherwise, make all resis-
•
tance checks by disconnecting the compo-
nent connector at the Central Control Unit
(CCU).
WARNING
Refer to page 4-6 for the procedure for ac-
cessing the inlet cold/bleach water valve.
To check the inlet cold/bleach water valve so-
lenoids at the component terminals, perform
the following steps.
1. Unplug washer or disconnect power.
2. Disconnect the solenoid connector from
the inlet cold/bleach valve terminals.
3. Set the ohmmeter to the R X 100 scale.
4. Touch the ohmmeter test leads to the 1
and 2 cold water connector terminals.
The meter should indicate between 825
and 1115 Ω.
5. Touch the ohmmeter test leads to the 1
and 3 bleach water connector terminals.
INLET COLD/BLEACH WATER
VALVE SOLENOIDS
To check the inlet valve solenoids at the CCU,
perform the following steps.
1. Unplug washer or disconnect power.
2. Disconnect the inlet valve solenoid con-
nector
VPW3 & VW3
(see page 4-5) from
the CCU.
3. Set the ohmmeter to the R X 100 scale.
4. Touch the ohmmeter test leads to the fol-
lowing connector pins. The meter should
indicate between 825 and 1115 Ω.
Pins 1 & 2 (cold)
•
Pins 1 & 3 (bleach)
•
1.
DP2
Drain Pump
2.
VPW3 & VW3
Cold / Bleach Valve
3.
VHF3
Hot Valve
4.
M7
Universal Motor
1
2 3
4
1 2 1 2 3 1 2 1 2 3 4 5 6 7
The meter should indicate between 825
and 1115 Ω.
COLD
BLEACH
1 2 3
Summary of Contents for WFC7500VW0
Page 18: ...2 10 NOTES ...
Page 64: ...4 28 NOTES ...
Page 87: ...7 1 WIRING DIAGRAMS WASHER Double Valve ...
Page 88: ...7 2 NOTES ...
Page 90: ...CORPORATION ...