GE Profile UltraFast Combo: "End" Message Stays On... | appliancefaults.com

Technical Background:

The Main Control Unit (MCU) manages all aspects of the washer/dryer operation. The display board receives signals from the MCU to show the current state, including the "End" message. Voltage paths are used to signal the door lock mechanism status. The MCU sends a signal to unlock the door once the cycle has completely ended.

Symptoms:

The "End" message remains illuminated on the GE Profile UltraFast Combo display for an extended period, approximately one hour, after a wash/dry cycle is complete. The unit may be unresponsive to user input during this time.

Possible Causes:

MCU (Main Control Unit) software glitch
Stuck or shorted button on the control panel
Communication error between the MCU and display board
Faulty door lock switch not releasing
Triac failure on the MCU board controlling the door lock
Moisture ingress affecting control board components

Solution:

1

Disconnect power to the unit at the breaker panel for 5 minutes to reset the MCU.
2

Inspect the control panel buttons for any signs of being stuck or damaged. Test button continuity with a multimeter.
3

Check the wiring harness connecting the MCU to the display board for loose connections or damaged wires. Use a voltmeter to check for proper voltage (typically 5V DC) at the display board connector.
4

Verify the door lock switch is functioning correctly. Use a multimeter to check for continuity when the door is locked and unlocked. Replace if faulty.
5

Examine the MCU board for any signs of burned components, especially triacs controlling the door lock mechanism. If damage is evident, replace the MCU.
6

Check for moisture around the control board area. Dry the area thoroughly and apply a conformal coating to the board to prevent future corrosion.
7

After addressing potential causes, reconnect power and observe if the "End" message clears. If it persists, the MCU may require replacement or reflashing.

Safety Warning:

Always disconnect power to the appliance at the breaker panel before performing any repairs. Lock-out/Tag-out (LOTO) procedures must be followed. High voltage components are present within the unit; exercise caution.

Prevention:

Periodically clean the control panel with a damp cloth to prevent sticky residue from affecting button operation. Ensure proper ventilation around the unit to prevent moisture buildup. Use only HE (High Efficiency) detergent in the recommended amount.

Expert Tip:

Entering service mode often clears persistent error messages. The sequence varies by model, but typically involves pressing and holding a specific combination of buttons (e.g., Start/Pause + Power) for several seconds. Consult the service manual for the exact sequence for your model.

Frequently Asked Questions

•What is the part number for the MCU on this model?

The MCU part number varies depending on the specific sub-model. Refer to the appliance's service manual or the parts list associated with its serial number for the correct part number.

•How do I access the service mode on the GE Profile UltraFast Combo?

While specific sequences vary, a common method involves pressing and holding the Start/Pause and Power buttons simultaneously for approximately 5 seconds. Consult your specific model's service manual for the precise procedure.

•Where is the door lock switch located, and how do I test it?

The door lock switch is typically located near the door latch mechanism. To test, disconnect power, access the switch, and use a multimeter in continuity mode. Check for continuity when the door is locked and no continuity when unlocked. Ensure the door lock striker is properly aligned.

GE Profile UltraFast Combo: "End" Message Stays On Display - Troubleshooting

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip:

Frequently Asked Questions

•What is the part number for the MCU on this model?

•How do I access the service mode on the GE Profile UltraFast Combo?

•Where is the door lock switch located, and how do I test it?

Related questions

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip: