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Refrigerant leak detection sensor
• When R32 refrigerant leak is detected, check code “J30” appears on the remote controller LCD during operation and the fan
is automatically operated at high speed.
Do not turn off the circuit breaker and ventilate the room, and then contact the dealer where you purchased the product.
• If the circuit breaker is turned off during displaying check code “J31” (out of the life of the product for the refrigerant leak
detection sensor), “J29” (the refrigerant leak detection sensor trouble) may appear when the circuit breaker will be turned on
again. Contact the dealer where you purchased the product whichever the check code appears.
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Air conditioner operating conditions
For proper performance, operate the air conditioner under the following temperature conditions:
Refer to the combined outdoor unit Installation Manual for details about the outdoor temperature.
If air conditioner is used outside of the above conditions, safety protection may work.
Cooling operation
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.
Heating operation
Room temperature
: 15 °C to 28 °C (Dry bulb temp.)
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Installation
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 place,
noise transmitted from the air conditioner affects the operation of these appliances.
• Do not install the air conditioner near a high frequency appliance (sewing machine or massager for business use, etc.),
otherwise 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 is generated.
• Do not install the air conditioner in a salty place such as 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 wind such as in seaside area.
• Do not install the air conditioner in a place where sulfurous gas generated such as in a spa.
• Do not install the air conditioner in a vessel or mobile crane.
• Do not install the air conditioner in an acidic or alkaline atmosphere (in a hot-spring area or near a chemicals factory, or in a
place subject to combustion emissions). Corrosion may be generated on the aluminum fin and copper pipe of the heat
exchanger.
• Do not install the air conditioner near an obstacle (air vent, lighting equipment, etc.) that disturbs discharge air. (Turbulent
airflow may reduce the performance or disable devices.)
• Do not use the air conditioner for special purposes such as preserving food, precision instruments, or art objects, or where
breeding animals or growing plants are kept.
(This may degrade the quality of preserved materials.)
• Do not install the air conditioner over an object that must not get wet. (Condensation may drop from the indoor unit at a
humidity of 80 % or more or when the drain port is clogged.)
• Do not install the air conditioner in a place where an organic solvent is used.
• Do not install the air conditioner near a door or window subject to humid outside air.
Condensation may form on the air conditioner.
• Do not install the air conditioner in a place where special spray is used frequently.
• Do not install the air conditioner in locations where iron or other metal dust is present. If iron or other metal dust adheres to
or collects on the interior of the air conditioner, it may spontaneously combust and cause a fire.
• Do not install the air conditioner in a place where smoke, chemical agent, or organic solvent is present. The refrigerant leak
detection sensor mistakenly operates, causing air conditioner not to operate.
Be careful with noise or vibrations
• Do not install the air conditioner in a place where noise by outdoor unit or hot air from its air discharge annoys your neighbors.
• Install the air conditioner on a solid and stable foundation so that it prevents transmission of resonating, operation noise and
vibration.
• If one indoor unit is operating, some sound may be audible from other indoor units that are not operating.
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128-EN
