COOLING OPERATION
How it works:
In cooling mode, your
karolina
indoor unit
will absorb heat from
the room, then the
karolina
outdoor unit
will discharge the heat
to the outdoors. The
karolina
cooling capacity decreases as the outdoor
temperature increases. This causes the
karolina
to work harder and
longer to hold the selected room temperature.
Indoor Coil Free
z
e Protection:
Frost may form on the indoor coil during cooling operations when the
outdoor temperature below 50°F (10°C). Prolong operation may cause ice
to form on the indoor coil and block airflow. If the
karolina
indoor
unit
microcomputer detects ice on the indoor coil it will stop the
compressor to defrost the coil and protect the unit.
HEATING OPERATION
How it works:
In heating mode, your
karolina
outdoor unit
will absorb heat from
the outdoor ambient, then the
karolina
indoor unit
will discharge
the heat to the room. The
karolina
heating capacity decreases as the
outdoor temperature decreases.
During extreme cold outdoor temperatures, you may need an additional
heating source to supplement the
karolina
heating output.
Defrost Function:
In heating mode, frost may form on the outdoor coil during humid and low
outdoor temperature conditions. Prolong operation may cause ice to form
on the outdoor coil and block airflow. This will reduce the
karolina
’s
heating capacity.
If the
karolina
microcomputer detects ice on the outdoor coil, it will
switch automatically to defrost mode to melt the ice and clear the coil.
During defrost mode, heating will be discontinued and the
karolina
indoor unit
will flash the Defrost indicator. The compressor will
continue to run while indoor and outdoor fans will stop. It is normal to see
steam or vapor coming from the outdoor unit during defrost mode. Defrost
mode will terminate 12 minutes after initiation of defrost cycle or when the
outdoor coil temperature is 50°F (10°C) or greater.
SYSTEM OPERATION
2
3
