Refrigerator makes a loud buzzing or humming noise from the rear that changes with compressor operation.

Safety first: Unplug the refrigerator before working near the compressor or fan. Components may be hot.

Step 1 – Isolate the noise source:

• Pull the unit slightly away from the wall and remove the rear or lower panel.
• Plug in and listen carefully to determine if the noise comes from the fan or compressor.

Step 2 – Condenser fan noise:

• If the fan is noisy, unplug the unit and inspect for debris or bent blades.
• Clean the area and straighten blades if possible; replace the fan motor if noise persists.

Step 3 – Compressor or tubing noise:

• Check that the compressor mounting grommets are intact and not hardened; replace if necessary.
• Gently reposition any copper lines that are touching each other or the cabinet, using foam sleeves or clips to dampen vibration.

Note: Internal compressor noise (knocking, grinding) usually indicates compressor wear and requires professional evaluation.