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Air conditioner operating conditions
For the specified performance, operate the air conditioner under the following temperature conditions:
If air conditioner is used outside of the above conditions the units, safety protection devices may operate.
3-14. Re-Installation
DANGER
If the unit position is to be changed and re-located to a new position ask your local dealer or
installation specialist. Do not attempt to move the air conditioner yourself, as incorrect installation
may cause electric shock or fire.
Do not install the air conditioner in the following places
• Do not install the air conditioner in any place within 1 m from a TV, stereo, or radio set. If the unit is installed in
such places, noise transmitted from the air conditioner may effect the operation of these appliances.
• Do not install the air conditioner near a high frequency appliance (sewing machine or massager for business
use, etc.), as the air conditioner may malfunction.
• Do not install the air conditioner in a humid or oily place, or in a place where steam, soot, or corrosive gas may
be generated.
• Do not install the air conditioner in a salty place such as a seaside area.
• Do not install the air conditioner in a place where a great deal of machine oil is used.
• Do not install the air conditioner in a place where it is usually exposed to strong winds such as in a seaside area
or on the roof / upper floor of a building.
• Do not install the air conditioner in a place where sulfureous gas may be generated such as in a spa.
• Do not install the air conditioner in a vessel or mobile crane.
Be careful with noise or vibrations
• Do not install the air conditioner in a place where the noise or the hot air created by the outdoor unit will come
into contact with your neighbours.
• Install the air conditioner on a solid and stable foundation as this will reduce the transmission of noise and
vibration that is produced from the outdoor unit.
• If one indoor unit is operating, some sound may be audible from other indoor units that are connected within the
same system (even when not in operation).
Cooling operation
Heating operation
Outdoor temperature : –5°C to 43°C (Dry-bulb temp.)
Room temperature
: 21°C to 32°C (Dry-bulb temp.), 15°C to 24°C (Wet-bulb temp.)
CAUTION
Room relative humidity – less than 80 %. If the air conditioner operates
in excess of this figure, the surface of the air conditioner may cause dewing.
Outdoor temperature : –15°C to 15.5°C (Wet-bulb temp.)
Room temperature
: 15°C to 28°C (Dry-bulb temp.)
Slot for air intake
The slot provided at side surface of the outdoor
unit is an air intake for cooling the electrical parts.
If the air intake would be clogged, a trouble is
caused on the electrical parts.
Therefore never close the air intake or do not
place any obstacle near the air intake.
3-15. When The Following Symptoms Air Found
Check the points described below before contacting your local service repair center.
It’s strange.
Symptom
Outdoor unit
• White misty cold air or
water is blown out.
• Sometimes, the noise
“Pushu !” is heard.
Indoor unit
• “Swish” sound is
sometimes heard.
• A stopping indoor unit
in the same operating
air conditioner system
emitted sound, white
vapor or cool air.
• Slight “Pishi!” sound is
heard.
• Discharge air smells.
• “
” indication is lit.
• When power of the air
conditioner is turned
on, “Ticktock” sound is
heard.
Operates or stops automatically.
Does not operate.
Air is not cooled or warmed sufficiently.
Cause
• Fan of the outdoor unit stops automatically and performs defrost
operation.
• Solenoid valve works when defrost operation starts or finishes.
• When the unit is in operation,a sound such as the movement of
water from one area to another may be heard. This sound may
become larger after a period of 2 to 3 minutes once the unit has
begun operation. This is not a cause for concern, but is the move-
ment of the refrigerant or the draining sound of the dehumidifier.
• When the air conditioner system is operating, the stopping indoor
unit in the same system needs temporary flow of refrigerant to
prevent the stay of oil or refrigerant.
Therefore, refrigerant flow sound “shaa/cyu” may be heard, or white
vapor may come out when other indoor unit heating, or cool air may
come out when other indoor unit cooling.
• This sound is generated when the heat exchanger, etc. expands
and contracts slightly due to the change of temperature.
• Various odurs such as those from a carpet, clothes, cigarette, or
cosmetics will adhere to the air conditioner.
• When cooling operation cannot be performed because another
indoor unit performs heating operation.
• When the manager of the air conditioner has fixed the operation to
either COOL or HEAT, but a request or demand contrary to the
setup operation is requested.
• When the fan operation is stopped to prevent the discharge of hot
air.
• Sound is generated when the expansion valve operates when the
power supply has been turned on.
• Is the timer “ON” or “OFF”?
• Is there a power failure to the unit?
• Has the power supply been turned off?
• Has the power fuse or breaker blown?
• Has the protective device operated? (The operation lamp goes on.)
• Is the timer “ON”? (The operation lamp goes on.)
• Are COOL and HEAT selected simultaneously?
(“
” indication is lit on the display column of the remote controller.)
• Is the suction port or discharge port of the outdoor unit obstructed?
• Are there any doors or windows open?
• Is the air filter clogged with dust?
• Is the discharge louver of the indoor unit set at appropriate posi-
tion?
• Is the air selection set to “LOW” or “MED” and is the operation
mode set to “FAN”?
• Is the setup temp. the appropriate temperature?
• Are COOL and HEAT selected simultaneously?
(“
” indication is lit on the display column of the remote controller.)
It is not a failure
.
Chec
k a
gain.
When the following symptoms are found, stop the operation immediately, turn off the power supply, and contact the
dealer from where you have purchased the air conditioner.
• Activation of the power supply causing the unit to operate in an unstable fashion
(power on, power off , power on, power off etc).
• The main power fuse often blows out, or circuit breaker is often activated.
• Foreign matters or water have entered the unit by mistake.
• When the unit fails to operate after the protective device (circuit breaker) has been removed.
Not recommended.
• Other unexplained symptoms or unit abnormalities, that cannot be explained.
Silent