Daikin FCAHG71HVEB - Operation; Operation Range; Operating the System; About Operating the System

15 | Operation
Installer and user reference guide
61
FCAHG71~140HVEB
Split system air conditioners
4P561449-1B – 2021.07
15 Operation
15.1 Operation range
Use the system in the following temperature and humidity ranges for safe and
effective operation.
In combination with R410A outdoor units
Outdoor units Cooling Heating
RZQG71~140 Outdoor
temperature
–15~50°CDB –20~15.5°CWB
Indoor
temperature
12~28°CWB 10~27°CDB
RZQSG71~140 Outdoor
temperature
–15~46°CDB –15~15.5°CWB
Indoor
temperature
14~28°CWB 10~27°CDB
Indoor humidity ≤80%
(a)
(a)
To avoid condensation and water dripping out of the unit. If the temperature or the
humidity is beyond these conditions, safety devices may be put in action and the air
conditioner may not operate.
In combination with R32 outdoor units
Cooling Heating
Outdoor temperature –20~52°CDB –20~24°CDB
–20~18°CWB
Indoor temperature 17~38°CDB
12~28°CWB
10~27°CDB
Indoor humidity ≤80%
(a)
(a)
To avoid condensation and water dripping out of the unit. If the temperature or the
humidity is beyond these conditions, safety devices may be put in action and the air
conditioner may not operate.
15.2 Operating the system
15.2.1 About operating the system
▪ To protect the unit, turn on the main power switch 6 hours before operation.
▪ If the main power supply is turned off during operation, operation will restart
automatically after the power turns back on again.
15.2.2 About cooling, heating, fan only, and automatic operation
▪ The air flow rate may adjust itself depending on the room temperature or the fan
may stop immediately. This is not a malfunction.