Koldfront ice maker shows E6 and does not cool or form ice.

Safety First: Unplug the unit. Do not attempt sealed-system repairs (refrigerant) unless you are a certified technician.

Steps to check E6:

• Listen for compressor: After plugging in (briefly), listen for a humming or clicking sound from the compressor area. Frequent clicking without running suggests a start device issue.
• Inspect start relay and overload: Unplug again, remove the rear lower panel, and locate the start relay and overload on the side of the compressor. Check for signs of burning or melting.
• Test start relay: Remove the relay and shake it gently; if it rattles or smells burnt, it is likely bad. Use a multimeter to check continuity according to specifications.
• Replace start device: Install a new Koldfront-compatible compressor start relay and overload assembly, ensuring a snug fit on the compressor terminals.
• Check wiring: Verify all compressor wires are firmly connected and not heat-damaged.
• Test operation: Restore power and observe if the compressor starts and runs smoothly. If E6 persists and the compressor does not start, the compressor itself may be failed and requires professional replacement.