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English
At a Glance
Operation ranges
The table below indicates the temperature and humidity ranges the air conditioner can be operated within.
Refer to the table for efficient use.
MODE INDOOR OUTDOOR INDOOR HUMIDITY IF OUT OF CONDITIONS
COOLING 80% or less
Condensation may occur on the indoor
unit with risk to have either water blow
off or drops on the floor.
HEATING -
Internal protection triggers and the air
conditioner will stop.
DRYING -
Condensation may occur on the indoor
unit with risk to have either water blow
off or drops on the floor.
CAUTION
• If you use the air conditioner at a relative humidity above 80%, it may cause a formation of condensation
and a leakage of water on the floor.
• The rated heating capacity is based on an outdoor temperature of 7°C. If the outdoor temperature goes
down below 0°C, heating efficiencies may decrease depending on the temperature conditions.
• If the indoor unit is out of the operating temperature and humidity range, the safery device may operate
and the air conditioner may stop.
• If the indoor unit is installed in an IT room (for example, a computer room), a separate backup system must
be installed, and the reliability of our product cannot be guaranteed at temperatures outside the operating
temperature range.
Maintaining your air conditioner
Internal protections via the unit control system
This internal protection operates if an internal fault occurs in the air conditioner.
Type Description
Against cold air The internal fan will be off to against cold air when the heat pump is heating.
De-ice cycle (Defrost cycle) The internal fan will be off to against cold air when the heat pump is heating.
Protect compressor
The air conditioner does not start operating immediately to protect the
compressor of the outdoor unit after it has been started.
NOTE
• If the heat pump is operating in Heat mode, De-ice cycle is actuated to remove frost from an outdoor
unit that may have deposited at low temperatures.
The internal fan is switched off automatically and restarted only after the de-ice cycle is completed.
Checking before use
At a Glance
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