Freezer making loud humming or buzzing noise from compressor area

Safety: Unplug the freezer before adjusting components. Compressor and pipes may be hot.

• Check levelling: Ensure the freezer is level using a spirit level. Adjust front feet so the cabinet is stable and does not rock.
• Tighten mounts: Remove the rear panel and gently tighten compressor mounting bolts, leaving the rubber grommets slightly compressed but not crushed.
• Isolate pipes: Look for copper pipes touching each other or the cabinet. Gently bend them apart a few millimetres and insert foam or rubber spacers.
• Secure panels: Tighten any loose screws on the rear panel or base tray that may rattle.

If the compressor itself is excessively loud or knocking, it may be failing internally. Consult a refrigeration engineer for assessment.