HTW IX21D4 Serie Manuel De L'utilisateur page 24

NOTE: For multi-split type air conditioners, one outdoor unit can be matched to different types of indoor units. All of
the pictures in this manual are for demonstration purposes only. Your air conditioner may be slightly different, if
similar in shape. The following pages introduce several kinds of indoor units that can be matched with the outdoor
units.
Operating Conditions
Use the system under the following temperatures for safe and effective operation. If the air conditioner is used
under different conditions, it may malfunction or become less efficient.
Indoor temperature
Outdoor temperature
Features
•
Protection of the air conditioner
Compressor protection
The compressor cannot restart for 3 minutes after it
stops.
•
Anti-cold air (Cooling and heating models only)
The unit is designed not to blow cold air on HEAT
mode, when the indoor heat exchanger is in one of
the following three situations and the set
temperature has not been reached.
A. When heating has just started.
B. During defrosting.
C. Low temperature heating.
The indoor or outdoor fan stop running when
defrosting (Cooling and heating models only)
• Defrosting
(Cooling and heating models only)
Frost may be generated on the outdoor unit during a
heat cycle when outdoor temperature is low and
humidity is high resulting in lower heating efficiency
in the air conditioner.
•
Under these conditions, the air conditioner will stop
heating operations and start defrosting
automatically.
•
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.
COOL Mode
17°C - 32°C (62°F - 90°F)
0°C - 50°C (32°F - 122°F)
-15°C - 50°C (5°F - 122°F)
(For models with low-temp
cooling systems)
HEAT mode
0°C - 30°C (32°F - 86°F)
-15°C - 30ºC (5°F - 76°F)
•
Auto-Restart (some models)
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 an
auto restart function, the unit will restart using the
same settings.
•
White mist emerging from the indoor unit
A white mist may be generated due to a large
temperature difference between air inlet and air
outlet on COOL mode in places with high relative
humidity.
A white mist may be generated due to moisture
created in the defrosting process when the air
conditioner restarts in HEAT mode operation after
defrosting.
•
Noise coming from the air conditioner
You may hear a low hissing sound when the
compressor is running or has just stopped running.
This sound is the sound of the refrigerant flowing 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 tempera heat expansion and cold
contraction of the plastic parts in the unit when the
temperature is changing.
A noise may be heard due to the louver restoring
itself to its original position when power is first
turned on.
22
DRY mode
17°C - 32°C (62°F - 90°F)
0°C - 50°C (32°F - 122°F)