Freezer not cooling at all; interior warm, compressor not running, lights may still work

Safety first: Unplug the freezer before accessing the compressor or controls. Sealed system work should be done by a certified technician.

• Listen for compressor: Plug in and listen for a humming sound followed by a click. Repeated clicking every few minutes suggests a start device issue.
• Check temperature control: On mechanical dial models, turn the thermostat from OFF to coldest setting and listen for a click. If no click and no power to compressor, replace the thermostat.
• Inspect start device: Remove the rear access panel, take off the compressor terminal cover, and inspect the start relay/overload for burns or rattling pieces. Replace with the correct Whirlpool kit if suspect.
• Test compressor windings: With start device removed and power off, measure resistance between compressor terminals. If windings are open or shorted to ground, the compressor is failed and requires professional replacement.
• Control board check: If mechanical parts test good but compressor never receives power, the main control board may be defective and should be replaced.