Ice maker powers on but compressor and fan do not start, unit stays at room temperature

Safety first: Disconnect power before removing panels. The compressor area can be hot; allow it to cool.

Inspection steps:

• Listen for start attempts: After plugging in, listen at the back. A repeated clicking sound every few minutes often indicates a bad start relay or PTC.
• Access compressor compartment: Remove the lower rear panel to expose the compressor, start relay/PTC module, and wiring.
• Check start relay/PTC: Pull off the plastic start device from the compressor terminals. Shake it gently; if it rattles or smells burnt, it is likely defective and should be replaced.
• Measure compressor windings: With the unit unplugged, use a multimeter to measure resistance between the three compressor pins (C, S, R). Values should be finite and not open or shorted to ground. If windings are open or shorted, the compressor is faulty.
• Inspect control board relay: On the main PCB, locate the compressor relay. Look for burn marks or cracked solder joints. If the relay is not energizing (no click) and the board is powered, the board may be defective.

Note: Replacing a compressor requires specialized tools and refrigerant handling certification. Home users should limit repairs to replacing the start relay/PTC and leave compressor replacement to a licensed technician.