Refrigerator not cooling at all; both fresh food and freezer compartments are warm, interior lights work.

Safety first: Unplug the refrigerator before accessing the rear compartment. Compressor circuits involve line voltage; use caution.

Steps to troubleshoot no cooling:

• 1. Listen for compressor and fans: With power on, check if the condenser fan and compressor are running. If neither runs, suspect the control board or power issue.
• 2. Check compressor start device: Unplug the unit, remove the rear cover, and pull off the start relay and overload from the compressor pins. Shake the relay; if it rattles or shows burn marks, replace it.
• 3. Test compressor windings: With a multimeter, measure resistance between the three compressor pins. Readings should be low and not open; any short to ground indicates a bad compressor.
• 4. Inspect control board: If the compressor and start device test good but never receive power, the main control board may be defective.
• 5. Sealed system repair: If the compressor runs but there is no cooling and no frost on the evaporator, a sealed system issue (refrigerant leak, restriction) is likely and must be handled by an EPA‑certified technician.