LG ATNH12GRLE2 Owner's Manual page 20

Operating Instructions
Function setting - Filter Sign Clear
This function is to clear the indicator of indoor filter cleaning.
• When filter is covered by dust, it will reduce cooling/heating efficiency and accumulate more
electric power. Therefore. do clean the filter whenever cleaning time is expired.
❈ Filter cleaning indication is automatically cancelled without the separate cancellation after certain
period of time.
20 Indoor Unit
Press button repeatedly
1
until the is flashing.
When the is flashing, press
2
the to clear this display