Quick summary
Light clicks, flowing-liquid sounds and steady compressor hum are normal. Fan scraping, loud constant humming, repeated knocking, or total silence with weak cooling deserve a check.
Modern LG fridges—especially linear or inverter compressors—change speed as needed, so their sounds change. Not every new sound is a fault.
Unplug the appliance, close the water tap if there's a leak, and never open covers that need tools or expose wiring or circuits.
Possible causes
Normal sounds
Plastic expanding during defrost, refrigerant flow, the water valve or ice maker operating.
Freezer fan
Scraping from frost or wear (FF may appear).
Condenser fan
Dust, a trapped object or wear (CF may appear).
Not level
Vibration touching walls or cabinets.
Compressor
Unusually loud hum or very frequent cycling.
Safe checks you can do
- Leave space between the fridge, wall and cabinets.
- Check the fridge is level.
- Listen: is the sound in the freezer (internal fan) or rear bottom (condenser/compressor)?
- Note any codes shown.
When to stop checking immediately
- If noise comes with weak cooling or a burning smell.
- If FF or CF appears.
Related components
- Fans
- Compressor
- Condenser
When do you need a technician?
The technician checks fans, compressor, condenser and defrost, and identifies the source before replacing anything.
Related error codes
FAQ
Is clicking normal on an LG fridge?
Light clicking during defrost or temperature changes is usually normal.
Why is the fan louder in summer?
The fridge works harder in high heat, so fans and compressor run faster.
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