Troubleshooting - The refrigerator makes noise. - NR-D535

The normal operation of the refrigerator will make some sounds list below.  These are normal operation and do not indicate a problem with the refrigerator.

• A clicking noise can be heard due to relay action as the compressor activates or stops and a horn can be heard due to resistance of the compressor.
• A buzzing sound can be heard due to the operation of the fan motor when the refrigerator is equipped with fans and a swishing sound can be heard due to air flow.
• A trickling sound can sometimes be heard as refrigerant flows through the cooling system.
• When the doors are opened and closed, water vapour produced by defrosting in the drain pipe will be compressed by the air and make a trickling or bubbling sound.
• When the refrigerator is defrosting, the water vapour fallen on the lid of the electric tube will evaporate and make a sizzling sound.
• Due to the differences between materials and coefficient of expansion of the parts in the refrigerator, the refrigerator will make a popping sound occasionally.
• The drawers will make clunking sound when opened and closed due to three-slide structure.
• Bubbling sound - Refrigerant flowing through the cooling devices.
• Hissing sound - Defrosting heater makes this noise even after it has stopped.
• Zooming sound - Fan operation noise.
• Clicking sound - Operation of electrical component or refrigerant (gas) adjustment valve.
• Snapping sound - Expansion/ contraction of refrigerant (gas) adjustment valve.