Troubleshooting Guide - Whirlpool WFC8090GX Service Manual

TROUBLESHOOTING GUIDE

NOTE: Always check for error/fault codes first (page 2-6)
Some tests will require accessing components. See Section 4, "Component Access" for component locations. For detailed testing
procedures, refer to Section 3, "Component Testing."
Problem
Won't Power Up No power to washer/dryer
• No operation
• No keypad
Connection problem between AC
response
plug and ACU.
• No display
Connections between ACU and UI.
ACU problem.
HMI problem.
Won't Start Cycle Control lock is activated.
No response when
START is pressed
Door lock mechanism not
functioning.
Connections between ACU and HMI. Check connections and harness continuity between ACU and
HMI problem.
ACU problem.
HMI Won't Accept Control lock is activated.
Selections
Connections between ACU and HMI. Check connections and harness continuity between ACU and
HMI problem.
ACU problem.
Door Won't Lock Door not closed.
Door lock obstructed.
Door lock mechanism not
functioning.
Door Won't Unlock Reset washer/dryer.
(See page 2-2 for
manually unlocking
the door lock system.)
Misaligned, broken, or over-
tightened door latch.
Door lock mechanism not
functioning.
Won't Dispense No water supplied to washer.
Dispenser clogged with detergent.
Valve problem
Dispenser system problem.
For Service Technician Use Only
Possible Cause
DIAGNOSTICS & TROUBLESHOOTING
Checks & Tests
Check power at outlet, check circuit breakers, fuses, or junction
box connections.
Check connections between the AC power cord and ACU for
continuity.
Check connections and harness continuity between the ACU
and HMI.
See TEST #1: ACU Power Check, page 3-4.
See TEST #2: Human-Machine Interface (HMI), page 3-6.
Check if the control lock icon above the Start button is on. If so,
press and hold to deactivate it.
1. Door not closed due to interference.
2. Lock not closed due to interference.
3. See TEST #4: Door Lock System, page 3-8.
HMI.
See TEST #2: Human-Machine Interface (HMI), page 3-6.
See TEST #1: ACU Power Check, page 3-4.
Deactivate the control lock.
HMI.
See TEST #2: Human-Machine Interface (HMI), page 3-6.
See TEST #1: ACU Power Check, page 3-4.
Ensure that door is completely closed.
Check mechanism for obstruction.
See TEST #4: Door Lock System, page 3-8.
Unplug the washer/dryer, wait 30 seconds, and reconnect the
power cord. Wait 2 minutes to see if the washer/dryer door
unlocks.
Check door lock mechanism and repair as necessary.
See TEST #4: Door Lock System, page 3-8.
1. Check water connections to washer.
2. Verify that water supply is turned on.
Clean obstruction from dispenser.
See TEST #5: Inlet Valve, page 3-9.
See TEST #10a & 10b: Dispenser System, page 3-14 to 3-16.
Whirlpool Smart All-In-One Washer & Dryer
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