Whirlpool WFC8090GX Service Manual page 26

DIAGNOSTICS & TROUBLESHOOTING
FAULT/ERROR CODES (continued)
Fault Error Description
Code
F3E3 Dry thermistor NTC open or shorted
F4E1 Wash heater relay error
F4E2 Dry heater relay error
F4E3 Dry fan motor error
F5E1 Door switch error
F5E2 Lock failure
F5E3 Unlock failure
F5E4 Door not open error
F6E1 Communication between the Appliance
Control Unit (ACU) and Motor Control Unit
(MCU) has not been detected.
F6E2 Communication between the Appliance
Control Unit (ACU) and Human Machine
Interface (HMI) has not been detected.
F6E3 Unknown cycle ID error
F7E2 MCU over temp error
F7E3 MCU over current error/internal failure.
F7E4 Motor disconnected error
F7E8 Motor over temp error
F7E9 Locked rotor
F8E1 Inlet valve error/fill timeout
F8E3 Overflow
F9E1 Long drain/drain timeout
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2-8 Whirlpool Smart All-In-One Washer & Dryer
For Service Technician Use Only
See TEST #12b: Dry Thermistor Sensor, pg. 3-20.
See TEST #8: Wash Heating Element, pg. 3-12.
See TEST #12a: Dry Heating Element, pg. 3-19.
See TEST #13: Dry Fan Motor, pg. 3-21.
See TEST #4: Door Lock System, pg. 3-8.
See TEST #4: Door Lock System, pg. 3-8.
See TEST #4: Door Lock System, pg. 3-8.
Make sure to open and close the washer/dryer door
between cycles.
Try recycling power to washer/dryer.
• Verify continuity in cable between ACU (JI7) and MCU
(J3). See wiring diagram on page 3-3.
• Check AC and DC supplies. See TEST #1 (ACU Power
Check) on page 3-4.
• See TEST #2 Human Machine Interface on page 3-6.
Try recycling power to washer/dryer.
• Verify continuity in cable between ACU (J16) and HMI
(CN1). See wiring diagram on page 3-3.
• Check AC and DC supplies. See TEST #1 (ACU Power
Check) on page 3-4.
• See TEST #2 Human Machine Interface on page 3-6.
See TEST #1: ACU Power Check, pg. 3-4.
• Check for obstruction between spin basket and outer tub.
• Check harness continuity and connections between ACU
and motor. See TEST #3: Motor Circuit, pg. 3-7.
See TEST #3: Motor Circuit, pg. 3-7.
Check harness continuity and connections between ACU and
motor. See TEST #3: Motor Circuit, pg. 3-7.
• Check for obstruction between spin basket and outer tub.
• Check harness continuity and connections between ACU
and motor. See TEST #3: Motor Circuit, pg. 3-7.
See TEST #3: Motor Circuit, pg. 3-7.
See TEST #5: Inlet Valve, pg. 3-9.
Make sure drain hose and drain pump filter are not plugged.
Verify functionality of water inlet valve, water level sensor,
and drain/recirculation pump.
• See TEST #5: Inlet Valve, pg. 3-9.
• See TEST #6: Pressure Switch, pg. 3-10.
• See TEST #7: Drain/Recirculation Pump, pg. 3-11.
Check drain hose installation for proper height, check drain
hose and filter for obstructions, and make sure drain hose
is not sealed into drain pipe. Check functionality of drain/
recirculation pump.
• See TEST #7: Drain/Recirculation Pump, pg. 3-11.