LG ThermaV Owner's Manual page 32

CAUTION
Sanitary water heating should be enable
• If sanitary water heating is disable, the
disinfection mode will not be operated
although Value #1 of Code 26 is set as
'01'.
• To use disinfection mode, sanitary water
heating should be enable.
32 Air-to-Water Heat Pump Owner's Manual
Press Silent Mode Button.
This button ON or OFF silent mode.
<Silent Mode OFF>
<Silent Mode ON>