ER 66
LG
Ice Maker Heater / Relay Error
Error code 66; ice maker heater or fill system may not operate correctly.
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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
Ice maker mold heater open, Heater relay stuck, Wiring harness damage to ice maker, Main PCB output failure
How to Fix / Troubleshooting
Safety: Disconnect power before testing heater circuits.
- Access ice maker: Remove the ice bin and ice maker cover to expose the ice maker assembly.
- Check for incomplete ejection: Look for cubes stuck in the mold. This can indicate a heater problem.
- Test heater: With a multimeter, measure continuity across the ice maker mold heater terminals. Replace the ice maker assembly if the heater is open.
- Inspect harness: Check the wiring from the ice maker to the cabinet for damage or loose connectors.
- Control board: If the heater and wiring are good but the heater never energizes, the main PCB relay may be defective and should be replaced by a technician.
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Repair Difficulty
Hard
4/5
Required Part
Ice Maker Assembly
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