E14
Prochem
Control Panel Communication Fault
Display shows E14 and the machine indicates a communication error between the main board and the display/keypad.
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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
Loose or damaged ribbon cable, Corroded display connector, Failed display/keypad module, Faulty communication driver on main control PCB
How to Fix / Troubleshooting
Safety: Disconnect power before opening the control panel.
- Inspect ribbon cable: Remove the control panel cover and locate the flat ribbon cable between the display/keypad and the main PCB. Check for kinks, cuts, or burn marks. Replace the cable if damaged.
- Clean connectors: Disconnect the ribbon at both ends and inspect the contacts. Clean gently with contact cleaner and reconnect firmly.
- Test with replacement panel (if available): If you have access to a known-good display/keypad module, connect it temporarily. If E14 clears, replace the Prochem display/keypad assembly.
- Main PCB communication driver: If a good panel and cable still result in E14, the communication circuitry on the main control PCB is likely faulty. Replace the control PCB.
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Repair Difficulty
Medium
3/5
Required Part
Display/Keypad Assembly
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