Refrigerator not cooling at all, both fresh food and freezer are warm, interior lights work but no cooling.

Safety first: Unplug the refrigerator and keep it unplugged while working near the compressor or control boards.

When both compartments are warm but lights work, the sealed system is not running.

• Listen for compressor: With the unit plugged in, you should hear a low hum and feel vibration at the compressor. Repeated clicking without running suggests a start device issue.
• Check condenser fan: If the condenser fan is not running, the compressor may also not be powered. Inspect the fan for obstructions and test the motor.
• Inspect start device: Remove the rear access panel. Carefully pull off the start relay/overload from the compressor terminals. Shake it gently; if it rattles or shows burn marks, replace it.
• Test compressor windings: With power off, measure resistance between compressor terminals. If readings are open or shorted to ground, the compressor is failed and requires professional replacement.
• Control board check: If the start device and compressor test good but no power is sent, the main control or inverter board may be faulty and should be diagnosed by a technician.