Freezer not cooling at all; interior is at room temperature, light may work, but no cold air is felt.

Safety warning: Unplug the freezer before accessing the compressor area. Do not attempt to open the sealed refrigeration system.

Steps:

• 1. Confirm symptoms: Listen at the back for any humming or clicking. If completely silent, suspect a start/control issue.
• 2. Check power and controls: Verify the outlet has power and the freezer is switched on with a cold setpoint.
• 3. Access compressor compartment: Remove the rear lower panel. Inspect the start relay/PTC and overload device on the compressor for burn marks or melted plastic.
• 4. Test start components: With a multimeter, check continuity of the overload and resistance of the PTC/relay. Replace with a Bomann-compatible start device if defective.
• 5. Evaluate compressor: Measure resistance between compressor terminals (C, S, R). Very low or infinite readings may indicate a failed compressor.
• 6. Control board check: If the compressor and start parts are good but never receive power, the main control board may be faulty and need replacement.

Call a technician: If the compressor is shorted or seized, replacement and refrigerant handling must be done by a licensed professional.