Freezer not cooling at all; interior remains at room temperature, light may work but compressor is silent.

Safety: Unplug the freezer before removing covers or touching electrical parts.

• Confirm power: Check that the outlet has power and the plug is fully inserted. Test with another appliance.
• Check control setting: Ensure the thermostat is not set to '0' or 'OFF'. On electronic models, verify the unit is not in standby.
• Listen for compressor: After plugging in, listen at the back. If there is no hum or click, suspect control or start components.
• Bypass thermostat (for testing only): On mechanical models, temporarily bridge the thermostat contacts (with power disconnected while wiring). If the compressor starts when re-powered, replace the thermostat.
• Inspect compressor start relay and overload: Remove the cover on the compressor terminals and check the relay and overload for burns or loose connections. Replace if damaged.
• Control board: If start components are good and the compressor windings test OK, the main PCB may not be sending power to the compressor and will need replacement.

Test: After replacing the faulty part, restore power and allow several hours for the freezer to reach operating temperature.