Loud humming or buzzing noise from the rear of the refrigerator.

Safety: Unplug the appliance before touching the compressor or fan area.

Steps:

• 1. Level the appliance: Adjust the front feet so the CDA fridge is stable and does not rock. Many noises are amplified by poor leveling.
• 2. Check rear panel and pipes: Ensure the metal or cardboard rear cover is securely screwed in place and that copper pipes are not touching each other or the cabinet.
• 3. Inspect condenser fan (if fitted): On some models, a fan cools the condenser at the rear. Check for debris in the blades and ensure the CDA condenser fan motor is firmly mounted.
• 4. Compressor mounts: Verify that the rubber compressor mounts are intact and not perished. Replace if the compressor is rattling excessively.
• 5. Professional help: If the compressor itself is internally noisy (knocking or grinding), consult a refrigeration engineer.

Note: A low-level hum is normal; sudden changes or very loud noises are not.