• During use of the Heating mode, the outdoor unit will
occasionally commence the defrost operation for brief
periods. During the defrosting operation, if the user sets
the indoor unit for heating again, the defrosting mode
will continue, and the Heating operation will begin after
completion of defrosting, with the result that some time
may be required before warm air is emitted.
• During use of the Heating mode, the top of the indoor
unit may become warm, but this is due to the fact that
coolant is circulated through the indoor unit even when it
is stopped; it is not a malfunction.
9-4. Temperature and humidity range
Permissible ranges of temperature and humidity are as
• Cooling / Dry operation
Outdoor temperature About –5°C to 46°C
About 18°C to 32°C
Below approximately 80%.
If the air conditioner is used
continuously for many hours, water
may condense on the surface and
• Heating operation
Outdoor temperature About –15°C to 24°C
About 10°C to 30°C
If the unit is used under higher temperature conditions than
those noted here, the automatic protection circuit may
operate, interrupting the operation.
If the unit is used under lower temperature conditions than
those noted here, the heat exchanger may freeze, causing
water leakage or other malfunction.
• If the air conditioner is used outside of the specified
temperature range, it may shorten the product life.
• Do not use the air conditioner for any purpose other than
room cooling/dry, room heating, or fan.