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Operating Conditions
Operate the system under the following temperatures for safe and eective operation. If the air
conditioner is used under dierent conditions, it may malfunction or become less ecient.
COOL Mode HEAT mode DRY mode
Indoor
Temperature
17-32°C
(62-90°F)
0-30°C
(32-86°F)
17-32°C
(62-90°F)
Outdoor
Temperature
0-50°C
(32-122°F)
-15-24°C
(5-76°F)
0-50°C
(32-122°F)
Unit Parts
And Major
Functions
Page 7
Features
Protections of the air conditioner:
a. Compressor Protection
• The compressor will not restart for 3 minutes
following an o cycle or for initial start.
b. Draft-Prevention Mode (Warm-Start Mode)
• The indoor unit fan is designed to not start in
HEAT mode, when the indoor heat exchanger
is in one of the following four situations, and
the set temperature has not been reached:
A) When heating has just begun.
B) During defrosting.
C) Low temperature heating.
D) Indoor heat exchanger is not warm yet.
• The indoor or outdoor fans stop running when
defrosting, in order to speed up the defrost cycle.
c. Defrosting (automatically handled as needed)
• Frost will accumulate on the outdoor unit coils
during a heat cycle when outdoor temperature
is low and humidity is high, resulting in lowered
heating eciency and performance.
• Under these conditions, the air conditioner will
stop heating operations and will automatically
begin defrosting for a brief period.
• The time to defrost may vary from 4 to 10
minutes, depending the outdoor temperature
and the amount of frost buildup on the
outdoor unit heat exchangers.
d. Auto-Restart (can be user deactivated)
In case of power failure, the system will
immediately stop. When power returns, the
operation light on the indoor unit will flash. To
restart the unit, press the ON/OFF button on the
remote control. If the system has the auto-restart
function enabled, the unit will restart with the
same settings without any action (by default).
White mist may emerge from the indoor unit
• White mist may be generated, due to a large
temperature dierence between the air inlet and
air outlet, in COOL mode in places with high
relative humidity.
• White mist may also be generated due to moisture
created in the defrosting process, when the air
conditioner restarts in HEAT mode operation
after defrosting.
Noise coming from your air conditioner
• You may notice a low hissing sound when the
compressor is running, or has just stopped
running. This sound is the eect of the
refrigerant owing or coming to a stop.
• You may also hear a low "squeaking" sound
when the compressor is running, or has just
stopped running. This is caused by heat
expansion and cold contraction of plastic
parts in the unit due to changing
temperatures.
• A noise may be heard due to the louver
restoring itself to its original position when
the power is rst turned on.
Dust blowing out from the indoor unit.
This is happens when the air conditioner has not
been used for a long time or during its rst use.
Smell emitting from the indoor unit.
This is caused by the indoor unit giving o smells
permeated from building materials, furniture,or
smoke.
NOTE: For multi-split type air conditioners, one outdoor unit can be matched with other types of
indoor units of various dierent styles, as well as those with similar capacities, within the same system.
Your system may be slightly dierent in shape. The following pages introduce several kinds
of indoor units that can be matched with the multi zone outdoor units.
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