Haier HRF-349NAA User Manual page 13

Functions
In lock-on mode (icon K appears), hold button C pressed for 3 seconds, then the super
freeze mode can be set and icon I appears. The super freeze mode can be inactivated
manually by holding button C pressed for 3 seconds in lock-on mode, then icon I
disappears. This mode will cease automatically when preset operating period of the
compressor finishes.
Caution: If super freeze mode is set, freezer temperature cannot be adjusted.
Temperature of wide-temp zone and refrigerator can be adjusted if lock on mode is
inactivated by pressing buttons C and D.
Display function control
30 seconds after the latest setup, VFD brightness becomes weakened. 3 minutes later,
VFD become black automatically. If temperature in freezer is too high and the over-temp
alarm is activated, VFD will not become black.
Refrigerator On/Off
In lock-on mode (icon K appears), hold button A pressed for 3 seconds, icon E disappears
and operation of refrigerator ceases; If button A is again held pressed for 3 seconds in
lock-on mode, icon E will appear and operation of refrigerator will be resumed.