Not a problem, There is a weird smell, Kimchi freezes temperature – LG GR-K243UG User Manual
Page 42: When you hear "dreruk", "dulkuk" or "woong" sound

Not a problem
42
When the boiled soybeans are heated, moisture within
the soybean comes out to form water drops on the cover, which is normal.
Dew drops form on the cover of the Chungukjang tray.
This is a unique smell of the Chungukjang when being fermented by the bacillus.
This smell can easily be spread on the fermenting container and inside the refrigerator drawer.
Therefore to prevent this, cleanly wash the tray and basket after fermenting, and remove the
moisture. Wipe inside the drawer of the refrigerator with a neutral cleaner.
There is a weird smell.
The condition of the completely fermented Chungukjang differs by the quality
of soybean, cooked level and fermenting process.
Successfully fermented Chungukjang has the following characteristics.
There is no resin but the surface of the bean turned white.
Where there is resin that forms strings and disappear
When the resin is sticky like pizza cheese
There is no resin with string like shape
Chungukjang
Heat comes out from the top of the refrigerator. Heat pipe
goes around the rim of the front side to prevent dew
drops forming. It can feel a bit heated during first use or
during the summer, but it is not a problem.
Kimchi freezes
Temperature
This is the noise coming from the compressor or fan
when the refrigerator starts or ends operating just like a
car makes a noise when starting or ending the engine.
When you hear "dreruk", "dulkuk" or "woong" sound.
dreruk
woong~
dulkuk
This is the sound of operating the refrigerator from parts moving
or refrigerant flowing. So be safe because it is not a problem.
When you hear "tuk tak", "krook", "shik" or "shoo" sound
Noise
shoo
shik
tuk! tak!
krook!