Whirlpool GHW9100L Drive Motor Tachometer Error, Motor Control Unit Error, Overflow Condition

		ERROR CODES
DISPLAY		EXPLANATION AND RECOMMENDED PROCEDURE
F/06	Drive Motor Tachometer Error
	The control is unable to properly detect motor speed and the machine will shut down.
	If a failure occurs during high-speed spin the door will be unlocked after 3 minutes.
	Potential Causes
	• Check wire harness connections between the Drive Motor/Tachometer and the
		Motor ControlUnit (MCU), and between the MCU and the Central Control Unit
		(CCU)
	• Check the Drive Motor
	•	Check the MCU
	• Check the Wire Harness
F/07	Motor Control Unit Error
	The Central Control Unit has detected a short in the motor control unit. If a failure
	occurs during high-speed spin the door will be unlocked after 3 minutes.
	Potential Causes
	• Check wire harness connections between the Drive Motor and the Motor Control
		Unit (MCU), and between the MCU and the Central Control Unit (CCU)
	•	Check the MCU
	• Check the Drive Motor
	• Check the Wire Harness
F/09	Overflow Condition
	If the Overflow contact on the pressure switch is Closed for more than 60 seconds
	an Overflow condition will occur. In an Overflow condition, the Door will remain
	locked, and the Drain Pump will run constantly, even if PAUSE/CANCEL is pressed
	twice and the Display is cleared. Unplug the unit to service.
	Potential Causes
	• Check the drain hose and make sure it is not plugged or kinked
	• Check Wire Harness connections to the Drain Pump, Pressure Switch, and
		Central Control Unit (CCU)
	• Check/ Clean Drain Pump Filter of foreign objects
	• Check for Drain Pump Failure
	• Check the Inlet Valve for proper shut off
	• Check the Pressure switch for proper operation
F/10	Motor Control Unit (MCU) Heat Sink Thermal Trip
	If the thermal protector on the MCU heat sink gets too hot, it will open the thermal
	protector on the heat sink which will stop motor functions and an “F/10” will be
	displayed.
	Potential Causes
	• Check for Proper Installation, verify the unit is not located near a source of heat
		and has proper ventilation.
	• Check Wire Harness connections to the MCU, the motor, and Central Control
		Unit (CCU)
	• Check the Drive system for any worn or failed components
	•	Check MCU
	•	Check Motor

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