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EN
WARNINGS ABOUT MOVEMENT AND REPAIR
• When the air conditioner cannot cool or heat a room well, contact the dealer from whom you purchased the air
conditioner as refrigerant leakage is considered as the cause. In the case of repair that requires refill of refrigerant,
ask service personnel about details of the repair.
The refrigerant used in the air conditioner is harmless.
Generally, the refrigerant does not leak. However, if the refrigerant leaks in a room and a heater or stove burner in
the room catches fire, it may generate toxic gas.
When you ask service personnel for repairing refrigerant leakage, confirm that the leakage portion has been
completely repaired.
• Do not move or repair any unit by yourself.
Since there is high voltage inside the unit, you may get electric shock when removing the cover and main unit.
• Whenever the air conditioner needs repair, make sure to ask the dealer to do it.
If it is repaired imperfectly, it may cause electric shock or fire.
• When moving the air conditioner for re-installing at another place, ask the dealer to do it. If it is imperfectly installed,
it may cause electric shock or fire.
CAUTION
CAUTIONS ABOUT INSTALLATION (Be sure to confirm the following cautions.)
• Use an exclusive power circuit for the air conditioner. Use the rated voltage.
• Certainly lay the drain hose for perfect draining.
Bad drainage may cause flooding in the house and getting furniture wet.
• Make sure to connect the air conditioner to an exclusive power supply of the rated voltage, otherwise the unit may
break down or cause a fire.
• Do not install the unit in a place where inflammable gas may leak.
If inflammable gas accumulates around the unit, it may cause a fire.
CAUTIONS ABOUT OPERATION
• Carefully read this manual before starting the air conditioner.
There are many important things to keep in mind for daily operation.
• Do not use this air conditioner for special purpose such as preserving food, precision instruments, art objects,
breeding animals, car, vessel, etc.
• When the air conditioner is operated with a combustion appliance in the same place, be careful of ventilation to let
fresh air enter the room.
Poor ventilation causes oxygen shortage.
• Do not place any combustion appliance in a place where it is directly exposed to the wind of air conditioner, otherwise
it may cause imperfect combustion.
• When the air conditioner is used in a closed room, be careful of sufficient ventilation of the room.
Poor ventilation causes oxygen shortage.
• Do not touch any switches with wet fingers. You may get an electric shock.
• If the air conditioner won’t be used for a long time, turn off the main switch or the circuit breaker, for safety.
• Do not put anything on the outdoor unit or step on it.
If you do, the unit may topple over or you may get injured.
• To make the air conditioner operate in its original performance, operate it within the range of the operating
temperature specified in the instructions.
Otherwise it may cause a malfunction, or water leak from the unit.
• Do not expose the remote control to any liquid.
2
System characteristics
Air conditioner operating conditions
For proper performance, operate the air conditioner under the following temperature conditions:
3 minute protection function
There is a 3-minute time delay between compressor starts.
Auto restart
The unit will stop after a power failure.
• The unit will restart automatically in the same operating mode as before the power failure when the power is
restored.
Fan operation
Heating
• When there is a call for heating, the fan will not start right away. There is a delay of approximately 5 minutes to
ensure that the indoor heat exchanger warmed up.
• When the room temperature reaches the set temperature, the fan will run at ultra low speed to avoid blowing cold
air on the occupants in the space.
Cooling
When the room temperature reaches the set temperature, the fan will run at ultra low speed.
Defrost
When the unit is operating in the heating mode frost forms on the outdoor heat exchanger.
When this occurs, defrost is initiated automatically. During the defrost period (2 to 10 minutes) both the indoor and
outdoor units stop running.
• A hissing noise might be heard when the defrost cycle is initiated.
• During the defrosting operation, the defrosted water will be drained from the bottom plate of the outdoor unit.
Heating capacity
In the heating operation, the heat is absorbed from the outside and brought into the room. This way of heating is
called heat pump system. When the outside temperature is too low, it is recommended to use another heating
apparatus in combination with the air conditioner.
Attention to snowfall and freeze on the outdoor unit
• In snowy areas, the air intake and air discharge of the outdoor unit are often covered with snow or frozen up.
If snow or freeze on the outdoor unit is left as it is, it may cause machine failure or poor warming.
• In cold areas, pay attention to the drain hose so that it perfectly drains water without water remaining inside for
freeze prevention. If water freezes in the drain hose or inside the outdoor unit, it may cause machine failure or
poor warming.
Cooling operation
Outdoor temperature
: 23 °F to 109.4 °F (-5 °C to 43 °C) *
Room temperature
: 69.8 °F to 89.6 °F (21 °C to 32 °C) (Dry bulb temperature),
59 °F to 75.2 °F (15 °C to 24 °C) (Wet bulb temperature)
[CAUTION]
Room relative humidity – less than 80%. If the air conditioner operates in excess of this
figure, condensation may occurs on the surface of the air conditioner.
Dry operation
Outdoor temperature
: 59 °F to 109.4 °F (15 °C to 43 °C)
Room temperature
: 62.6 °F to 89.6 °F (17 °C to 32 °C)
Heating operation
Outdoor temperature
:
-
4 °F to 59 °F (
-
20 °C to 15 °C) (Wet bulb temperature)
Room temperature
: 59 °F to 86 °F (15 °C to 30 °C) (Dry bulb temperature)
*: The air conditioner can be operate when outside temperature is 5 °F to 23 °F (-15 °C to -5 °C). Installing wind
baffle to the outdoor unit is necessary to operate the air conditioner in that outside temperature range.
For further details, refer to the Installation Manual of the outdoor unit.
If air conditioner is used outside of the above conditions, safety protection may work.
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