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Troubleshooting Guide - Whirlpool WFW94HEX Technical Education

Direct drive fl washer
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DIAGNOSTICS & TROUBLESHOOTING
FOR SERVICE TECHNICIAN'S USE ONLY

TROUBLESHOOTING GUIDE

PROBLEM
No power to washer
WON'T POWER UP
• No operation
• No keypad response
Connection problem between AC plug
• No LEDs or display
and CCU
Connections between CCU and user
interface
CCU problem
User interface problem
Door lock mechanism not functioning
WON'T START CYCLE
No response when Start
Button is pressed.
Connections between CCU and UI
User interface problem
CCU problem
Connections between CCU and UI
UI WON'T ACCEPT
SELECTIONS
User interface problem
CCU problem
Door not closed
DOOR WON'T LOCK
Door lock obstructed
Door lock mechanism not functioning
Reset washer
DOOR WON'T UNLOCK
Misaligned, broken, or over-tightened
door latch
Door lock mechanism not functioning
No water supplied to washer
WON'T DISPENSE
Dispenser clogged with detergent
Valve problem
Dispenser system problem
No water supplied to washer or low water
WON'T FILL
pressure
(Normal water level is
only 2.5" to 5" [63.5 mm
Plugged filter/screen
to 127 mm] inside tub.)
Drain hose installation
Valve problem
Pressure sensor problem
Drain hose/filter is plugged
OVERFILLS
Valve(s) not shutting off
Pressure sensor problem
Drain pump problem
Is door lock showing open during
DRUM WON'T ROTATE
the cycle?
Harness connections
Motor problem
Mechanical friction
MOTOR OVERHEATS
Harness connections
Motor problem
PAGE 10
POSSIBLE CAUSE
6-2
CHECKS & TESTS
Check power at outlet, check circuit breakers,
fuses, or junction box connections.
Check connections between the AC power
cord and CCU for continuity.
Check connections and continuity between
CCU and UI.
See TEST #1: CCU Power Check.
See TEST #2: User Interface.
1. Door not closed due to interference.
2. Lock not closed due to interference.
3. See TEST #4: Door Lock System.
Check connections and continuity between
CCU and UI.
See TEST #2: User Interface.
See TEST #1: CCU Power Check.
Check connections and continuity between
CCU and UI.
See TEST #2: User Interface.
See TEST #1: CCU Power Check.
Ensure that door is completely closed.
Check mechanism for obstruction.
See TEST #4: Door Lock System.
Unplug and reconnect the power cord. Wait 2
minutes to see if the washer door unlocks.
Check door lock mechanism and repair as
necessary.
See TEST #4: Door Lock System.
1. Check water connections to washer.
2. Verify hot and cold supply is on.
Clean obstruction from dispenser.
See TEST #6: Water Inlet Valves.
See TEST #12: Dispenser Distribution System.
1. Check water connections to washer.
2. Verify hot and cold supply is on.
Check for plugged filter or screen in the water
valve or hoses.
Check for proper drain hose installation.
Is water siphoning out of the drain hose?
See TEST #6: Water Inlet Valves.
See TEST #7: Pressure Sensor/Switch.
Check for hose and drain filter obstructions.
See TEST #6: Water Inlet Valves.
See TEST #7: Pressure Sensor/Switch.
See TEST #8: Drain Pump.
See TEST #4: Door Lock System.
Check harness connections between CCU >
MCU > and drive motor.
See TEST #3: Motor Circuit.
Check for obstruction between spin basket
and outer tub.
Check harness connections between CCU >
MCU > and drive motor.
See TEST #3: Motor Circuit.
DO NOT REMOVE OR DESTROY

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