E18
Cecotec
Super Cool / Super Freeze Circuit Error
Refrigerator shows E18 and the quick-cool or super-freeze function does not activate properly.
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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
Faulty relay on main control board for super mode, Incorrect feedback from compressor inverter, Software fault in control logic, Wiring issue between mode button and main board
How to Fix / Troubleshooting
Safety: Unplug the refrigerator before accessing control boards.
- Check user settings: Confirm that the super-cool or super-freeze function is correctly selected and that the indicator lights respond.
- Inspect UI-to-main harness: Remove the control panel and verify the harness to the main board is secure.
- Power reset: Disconnect power for 10 minutes, then retry the super mode.
- Board diagnosis: If E18 reappears and the compressor does not change speed or duty cycle, the main control board or inverter may be faulty. Replacement should be performed by a technician.
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Repair Difficulty
Hard
4/5
Required Part
Main Control Board (Super Mode Relay Section)
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