E4
GE Appliances
Keypad / Touch Panel Fault
Display shows “E4” and the unit powers on but none of the brew functions respond.
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Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
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Possible Causes
Damaged membrane keypad, Loose ribbon cable to control board, Moisture intrusion behind control panel, Failed touch sensor IC
How to Fix / Troubleshooting
Safety first: Unplug the coffee maker before removing the control panel or front housing.
- 1. Dry the panel: If the panel was recently cleaned or exposed to steam, allow the unit to dry for several hours. Do not spray cleaners directly on the control panel.
- 2. Reseat ribbon cable: Remove the front panel screws and gently pull the control panel forward. Disconnect and reconnect the flat ribbon cable between the keypad and control board.
- 3. Inspect for corrosion: Look for signs of moisture or corrosion on the keypad connector. Clean gently with isopropyl alcohol and a soft brush.
- 4. Test buttons: After reassembly, plug in and test each button. If some or all buttons still do not respond, the keypad or touch panel is likely defective.
- 5. Replace keypad assembly: Order the correct GE control panel or keypad assembly and replace it according to the service instructions.
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Repair Difficulty
Medium
3/5
Required Part
Keypad / Control Panel Assembly
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