Why is there a cracking sound coming from the air conditioner during operation?

LG LB-H0850QC Air Conditioner · Updated 2026-04-04

A cracking sound is generated by the expansion and contraction of the inlet grille and other parts due to changes in temperature. This is a normal occurrence and does not indicate a malfunction.

Source: LB-H0850QC Air Conditioner Manual, Page 15

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