Whirlpool WET4027HW0, Service Manual

Page: 37 / 82

TESTING – WASHER
27” Stacked Laundry Center
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For Service Technician Use Only
TEST #2 Valves
This test checks the electrical connections to the valves, and
the valves themselves.
1. Check the relays and electrical connections to the
valves by performing the Cold and Hot Valve tests under
Manual Test Mode on page 2-11. Each test activates and
deactivates the selected valve. The following steps assume
one (or more) valve(s) did not turn on.
2. For the valve(s) in question check the individual solenoid
valves:
a. Unplug washer/dryer or disconnect power.
b. Remove console to access main control.
c. Remove connector J9 from main control. Refer to main
control diagram on page 3-6.
d. Check harness connection to solenoid valves.
3. Check resistance of the valve coils across the following J9
connector pinouts:
Valve Pinout
Hot Valve J9, 1 & 4
Cold Valve J9, 5 & 4
Resistance should be 890–1.3k Ω.
¾
If resistance readings are tens of ohms outside
of range, check lower washer harness connector
according to diagram. If still outside of range, replace
the valve assembly.
¾
If resistance readings are within range, replace main
control and calibrate washer. Perform Automatic Test
to verify repair.
Figure 1
Figure 2
Hot
Cold
Cold Valve
Hot Valve
WARNING
Electrical Shock Hazard
Disconnect power before servicing.
Failure to do so can result in death or
electrical shock.
Replace all parts and panels before operating.
Dispenser
N MAIN CONTROL L1
790 - 840
Ω
WATER INLET VALVES
J6-2
J9-1
W
R
W
BU
W
BK
MAIN CONTROL
J5-1
J9-5
J9-4
HOT VALVE
COLD VALVE
Pin 4
W
Pin 1
Pin 5
MAIN RELAY
K4
VALVES