EXPLANATION AND RECOMENDED PROCEDURE =
No water detected entering machine or Pressure switch trip not detected.
If after 30 seconds the control does not detect water entering machine and then valves will be turned off and the error code will be displayed.
Or If the control has turned the water valves on and after 8 minutes the flow meter has detected 10.5 gallons of water passing through it, but has not detected the pressure switch trip, the valves will be turned off and the error code will flash.
Press PAUSE/CANCEL twice to clear the display.
Potential Causes
• If there is no water in the unit:
• Make sure that both valves at the water source(s) are turned on all the way.
• Check for plugged or kinked inlet hoses or plugged screens in the inlet valves
• Verify inlet valve operation
• If there is water in the unit:
• Verify Drain pump operation
• Pressure Switch Hose is in good condition and properly connected to Tub and
Pressure switch
• Verify there is not a siphon problem
• Verify wire harness connections to; Inlet Valves, Pressure Switch, Drain Pump,
Flow Meter, and Central Control Unit (CCU)
• Check all hoses for possible leaks
• Verify pressure switch operation
• Verify flow meter operation
• Verify CCU operation
DISPLAY = F/02
EXPLANATION AND RECOMENDED PROCEDURE =
Long Drain
If the drain time exceeds 8 minutes, the water valves are turned off and “F/02” is flashed.
Press PAUSE/CANCEL twice to clear the display.
NOTE: After 4 minutes the “Sud” error will be displayed, then 4 minutes later
the F/02 error code will be displayed.
Potential Causes
• Check the drain hose and make sure it is not plugged or kinked
• Check the electrical connections at the pump and make sure the pump is running.
• Check the drain pump filter for foreign objects
• If the above does not correct the problem replace the pump
DISPLAY = F/05
EXPLANATION AND RECOMENDED PROCEDURE =
Water Temperature Sensor Error
If during the water heating step in the wash cycle, the water temperature sensor (NTC) value is out of range, or the heating element circuit has failed, the “F/05” error code will be displayed.
Potential Causes
• Check the Water Temperature Sensor, Heating Element and Element Relay
• Check connections to the Sensor, Heating Element and Relay
DISPLAY = F/06
EXPLANATION AND RECOMENDED PROCEDURE =
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
DISPLAY = F/07
EXPLANATION AND RECOMENDED PROCEDURE =
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
DISPLAY = F/09
EXPLANATION AND RECOMENDED PROCEDURE =
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
DISPLAY = F/10
EXPLANATION AND RECOMENDED PROCEDURE =
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
DISPLAY = F/11
EXPLANATION AND RECOMENDED PROCEDURE =
Serial Communication Error
Communication between the Central Control Unit (CCU) and the Motor Control Unit (MCU) cannot be sent correctly.
Potential Causes
• 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 CCU
• Check Motor
• Check Wire Harness
DISPLAY = F/13
EXPLANATION AND RECOMENDED PROCEDURE =
Dispenser Circuit Error
If the dispenser motor is not able to be driven to it’s proper position.
Potential Causes
• Check mechanical linkage from dispenser motor to the top of the dispenser.
• Check Wire Harness connections to the dispenser motor and Central Control Unit (CCU)
• Check Dispenser Motor
DISPLAY = F/14
EXPLANATION AND RECOMENDED PROCEDURE =
EEPROM Error
The Central Control Unit (CCU) receives it’s data from an EEPROM onboard the CCU. If there is an error reading this data it will cause this error.
Potential Causes
• A power glitch may cause this error. Try unplugging the Unit for two minutes to see if that fixes the error.
• Check CCU.
DISPLAY = F/15
EXPLANATION AND RECOMENDED PROCEDURE =
Motor Control Unit (MCU) Error
If the MCU detects multiple resets or errors during a wash cycle it will go into this error mode.
Potential Causes
• Check Wire Harness connections to the MCU, the motor, and Central Control Unit (CCU)
• Check Drive belt
• Check MCU
• Check Motor
• Check Wire Harness
DISPLAY = Sud
EXPLANATION AND RECOMENDED PROCEDURE =
SUDS LOCK (Overdose of Detergent detected during the Wash Cycle)
The motor control unit senses a suds lock condition by analyzing the current draw on
the drive motor. If “Sud” is displayed a potential suds lock is detected. This may
signify a bad pump, an extra heavy load, excessive detergent, or excessive suds.
Potential Causes
• If too much detergent was used, run the unit through a Rinse/ Spin cycle then a
Normal cycle without adding any detergent. This should clear the unit of the
excess detergent.
• 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 Drain Pump
• Check the Pressure Switch
• Check CCU
DISPLAY = F/dl
EXPLANATION AND RECOMENDED PROCEDURE =
Door Lock Error
A Door Lock Error occurs if the door cannot be locked. It will try to lock it 6 times before displaying the error.
Potential Causes
• Door Lock Mechanism broken or removed from the Door
• Check Door Lock/Switch Assembly
• Check the wire harness connections to the Door Lock/Switch Assembly and
Central Control Unit (CCU)
• Door Lock/Switch Assembly Failure
DISPLAY = F/dU
EXPLANATION AND RECOMENDED PROCEDURE =
Door Unlock Error
A Door Unlock Error occurs if the door cannot be unlocked. It will try to unlock the door 6 times before displaying the error.
Potential Causes
• Door Lock Mechanism broken.
• Check Door Lock/Switch Assembly for foreign objects
• Check Wire Harness connections to the Door Lock/Switch Assembly and Central
Control Unit (CCU)
• Door Lock/Switch Assembly Failure
Note: The Door Lock/Switch Assembly can be manually unlocked. See Section
Seven, TECH TIPS
DIAGNOSTIC TEST
The control must be in the OFF state before pressing the touch-pad sequence to start the test.
Starting the test mode
Close the door.
Press the Control On button.
Select the DRAIN/SPIN cycle.
Select NO SPIN by pressing the SPIN SELECT button, as needed.
Push Prewash Option button four (4) times within five (5) seconds. C:00 will show in the display.
NOTE: If Model does not have PREWASH Mode as an option, press RINSE/HOLD.
If the Starting procedure fails, push PAUSE/CANCEL button. Then repeat the starting sequence.
Test Program Control during Execution
To advance to the next step of the test procedure, push Prewash Option button two (2) times.
Overview Test Program
Indication = C:00
Control Action = Door is Locked
Actuators to be Checked = Door Lock System
Indication = C:01
Control Action = Filling by cold water inlet valve
Actuators to be Checked = Flowmeter, Cold water inlet valve
Indication = C:02
Control Action = Distribution system is set to Prewash position
Actuators to be Checked = Dispenser motor, Dispenser contact
Indication = C:03
Control Action = Fill by hot water inlet valve
Actuators to be Checked = Hot water inlet valve
Indication = C:04
Control Action = Basket rotates clockwise at wash speed
Actuators to be Checked = Motor, MCU control
Indication = C:05
Control Action = Heater is switched ON.
Basket rotates clockwise with wash speed.
If there is not enough water in the tub, the water inlet valve will be switched ON to fill-in the minimum water quantity.
NOTE: On GHW 9100 Models only the Temperature Sensor will be checked
Actuators to be Checked = Heater, Temperature Sensor
Indication = C:06
Control Action = Drain Pump is ON
Actuators to be Checked = Drain Pump
Indication = C:07
Control Action = Basket rotates counterclockwise from 35 to 90 rpm within 15 seconds Basket rotates counterclockwise
Actuators to be Checked = Motor, MCU control
Indication = C:08
Control Action = Basket rotates counterclockwise with max. speed Basket speed 1100 rpm
Actuators to be Checked = Motor, MCU control
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