–19–
6. Hot-Start Control
• The indoor fan stops until the evaporator piping temperature will be reached to 28°C(82.4°F).
• During heating operation, if piping temperatures fall below 26°C(78.8°F) fan stops.
• The operation diagram is as following.
7. Defrost Control
• Defrost operation is controlled by timer and sensing temperature of outdoor pipe.
• The first defrost starts only when the outdoor pipe temperature falls below -6°C(21.2°F) after 45 minutes passed
from starting of heating operation and more than.
• Defrost ends after 10 minutes pass from starting of defrost operation or when the outdoor pipe temperature rises
over 12°C(53.6°F) even if before 10 minutes.
• The second defrost starts only when the outdoor pipe temperature falls below -6°C(21.2°F) after 45 minutes pass
from ending of the first defrost and more than.
INDOOR PIPE
TEMP.
INDOOR FAN
SPEED
Selecting
fan speed
OFF
OFF
LOW
1min
Maximum
COMPRESSOR
ON
28
°
C(82.4
°
F)
26
°
C(78.8
°
F)
More than 45 minutes of
heating operation
Outdoor Pipe Temp.
Indoor Fan
Compressor
4-Way Valve
ON
ON
ON
ON
OFF
ON
OFF
HOT-
START
ON
ON
OFF
OFF
ON
12
°
C(53.6
°
F)
(Defrost OFF)
-6
°
C(21.2
°
F)
(Defrost ON)
Within
10 minutes
Defrost
Defrost
More than 45 minutes of
heating operation
