Whirlpool WFC8090GX, Service Manual, Page: 39 / 82

COMPONENT TESTING
Whirlpool Smart All-In-One Washer & Dryer
n
3-9
For Service Technician Use Only
TEST #5: Inlet Valve
This test checks the electrical connections to the valve and
the valve itself. The inlet valve is a double valve consisting of a
main fill and condenser valve.
1. Check the relays and electrical connections to the valve
by performing the Service Diagnostic Mode Tests on page
2-3. The following steps assume one or more of the valves
did not turn on.
2. For the valve(s) in question, check the individual solenoid
coils:
a. Unplug washer/dryer or disconnect power.
b. Remove top panel to access the inlet valve, and then
gently lay washer/dryer on its right side to access the
ACU. Remove AC shield and ACU cover.
c. Remove connector J4 from the ACU. Refer to ACU
diagram on page 3-5.
d. Check harness connections to the solenoid valves.
Verify continuity in harness between ACU and solenoid
valves.
3. Check valve coil resistance at the valve, or across the
following connector pinouts:
Valve Pinout
Main Fill Valve J4, pins 1 & 6
Condenser Valve J4, pins 1 & 4
Resistance should be 890 - 1.1k Ω.
¾
If resistance readings are outside the range or open,
replace the valve assembly.
¾
If resistance readings are within range, reconnect J4 .
Go to step 4.
4. Plug in washer/dryer or reconnect power.
5. With a voltmeter set to
AC , attach the leads across the
pins of the suspect valve (see chart in step 3). Run the
Service Diagnostic Mode Tests and check for line voltage
across the pins of the valve. NOTE : Refer to the Service
Diagnostic Mode Tests on page 2-3 to determine when the
main fill and condenser valves are actuated.
¾
If line voltage is present and valve still does not
activate, replace valve assembly.
¾
If line voltage is not present, replace the ACU.
6. Unplug washer/dryer or disconnect power.
7. Reassemble all parts and panels.
8. Perform the Service Diagnostic Mode Tests on page 2-3 to
verify repairs.
Figure 2 - Inlet Valve Strip Circuit
INLET VALVE ASSEMBLY
Figure 1 - Inlet Valve
DANGER
Electrical Shock Hazard
Only authorized technicians should perform
diagnostic voltage measurements.
After performing voltage measurements,
disconnect power before servicing.
Failure to follow these instructions can result in
death or electrical shock.
L1
ACU L2
890 - 1.1K Ohms
INLET VALVE
WATER VALVES
J1-2 J4-1
ACU
J1-1
J4-6
MAIN FILL
CONDENSATION
J4-4
RELAY
RFI-L
RFI-N
Main Fill
Valve & Hose
Valve
Connector
Condensing
Valve & Hose