E14
Siemens
User Interface Input Fault
Microwave shows E14 and does not respond correctly to button presses or rotary knob input.
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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
Defective rotary encoder, damaged touch keypad membrane, loose UI ribbon cable, liquid ingress into control panel
How to Fix / Troubleshooting
Safety warning: Disconnect power before removing any control panel parts. Do not use excessive liquid cleaners on the panel.
Steps to try:
- 1. Dry the panel: If the panel was recently cleaned or exposed to steam, unplug the microwave and allow it to dry for several hours.
- 2. Check for stuck controls: Gently rotate the knob and press each button to ensure they move freely and are not physically jammed.
- 3. Power reset: Reconnect power and test. If E14 persists, the UI hardware is likely damaged.
- 4. Technician-level: Remove the control panel, inspect the ribbon cable and connectors, and test the rotary encoder or keypad matrix. Replace the user interface PCB or keypad assembly as needed.
Until repaired, avoid pressing hard on the controls to prevent further damage.
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Repair Difficulty
Medium
3/5
Required Part
User Interface PCB / Keypad Assembly
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