E18
IceKing Defrost Control Timing Fault

Display shows E18 and the refrigerator may not enter or exit defrost mode correctly, causing alternating warm and cold periods.

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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

Corrupted defrost algorithm in main PCB, Stuck defrost relay, Incorrect feedback from defrost sensor, Power interruptions causing control errors

How to Fix / Troubleshooting

Safety first: Unplug the refrigerator before accessing the control board or defrost components.

Steps:

  • 1. Verify defrost components: Ensure the defrost heater and defrost sensor (evaporator NTC) are functioning correctly as per E3 and E4 procedures.
  • 2. Power cycle: Disconnect power for at least 10 minutes to allow the control to fully reset. Restore power and monitor behavior over 24 hours.
  • 3. Inspect main PCB: Check for signs of overheating around the defrost relay. If the relay appears burnt or the board is damaged, replace the main PCB.
  • 4. Firmware / board replacement: Some IceKing models may require a specific updated PCB if defrost timing issues are known. Use the correct replacement board for your model.

Recommendation: Because this fault is control-logic related, if basic component checks do not resolve it, contact an authorized IceKing service center.

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Repair Difficulty

Hard 4/5

Required Part

Main Control PCB
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