Carrier 38QUA009DS, Service Manual, Page: 81 / 116

78
14. Operation Characteristics
Temperature
Mode
Cooling operation Heating operation Drying operation
Room temperature 17
℃
～
32
℃
(62
℉
～
90
℉
)
0
℃
～
30
℃
(32
℉
～
86
℉
)
10
℃
～
32
℃
(50
℉
～
90
℉
)
Outdoor temperature
(Entry level)
0
℃
～
50
℃
(32
℉
～
122
℉
)
（
-15
℃
～
50
℃
(5
℉
～
122
℉
)
：
For
the models with low temperature
cooling system
）
-15
℃
～
30
℃
(5
℉
～
86
℉
)
0
℃
～
50
℃
(32
℉
～
122
℉
)
Outdoor temperature
(E-Star level)
-25
℃
～
50
℃
(-13
℉
～
122
℉
)
-25
℃
～
30
℃
(-13
℉
～
86
℉
)
Outdoor temperature
(Hyper heat)
-30
℃
～
50
℃
(-22
℉
～
122
℉
)
-30
℃
～
50
℃
(-22
℉
～
122
℉
)
CAUTION:
1. If the air conditioner is used beyond the above conditions, certain safety protection features may
come into operation and cause the unit to operate abnormally.
2. The room relative humidity should be less than 80%. If the air conditioner operates beyond this
figure, the surface of the air conditioner may attract condensation. Please set the vertical air flow louver to
its maximum angle (vertically to the floor), and set HIGH fan mode.
3. The optimum performance will be achieved during this operating temperature zone.