E6 error displayed; unit may fill with water but never freeze, or may not start the cooling cycle at all.

Safety first: Unplug the ice maker. Compressor and electrical components can carry dangerous voltages. If you are not comfortable with electrical testing, contact a professional.

Steps to troubleshoot E6:

• Listen for compressor: When the unit attempts to start, note whether you hear a brief hum and click, or nothing at all.
• Access compressor compartment: Remove the rear lower panel to expose the compressor, start relay/PTC, and wiring.
• Inspect start device: Remove the start relay/PTC from the compressor terminals. Check for burn marks, rattling pieces inside, or melted plastic. Replace if damaged.
• Test compressor windings: With a multimeter, measure resistance between the three compressor pins. None should be open or shorted to ground. If they are, the compressor is likely failed.
• Check board connections: Ensure the compressor wires are firmly seated on the main PCB and that there are no obvious burn marks on the board.
• Replace faulty parts: Install a new NewAir-compatible start relay/PTC if the original is suspect. If the board relay is not energizing the compressor, the main control board may need replacement.

Note: Compressor replacement is advanced and usually not cost-effective on small ice makers; consult a technician for confirmation.