22
P5417089
5.2.3 Automatic Cooling/Heating Mode
Function
Automatic Cooling/Heating Mode automatically
switches cooling and heating based on the set
temperature.
The cooling operation is performed when the inlet
air temperature is approximately 3.6
o
F (2
o
C) higher
than the set temperature.
The heating operation is performed when the inlet
air temperature is approximately 3.6
o
F (2
o
C) lower
than the set temperature.
NOTE
● If the fan speed is set to “LOW” during the
heating operation, the operation tends to be
stopped by activation of the protection devices,
etc. In this case, set the fan speed to “MED”,
“HIGH” or “HIGH 2”.
● The heating operation is not available when
the outdoor temperature is higher than
approximately 70
o
F (21
o
C).
The automatic cooling/heating operation is set by the function selection. Contact your distributor
and contractor for details.
Automatic Cooling/Heating Mode is for Heat Recovery VRF system only and is not available for other
systems. Also note that there is quite a temperature difference between cooling and heating operation
when using this function.
Before
Operation
Turn ON the power supply.
Apply power to unit(s) for approximately 12 hours before operation in order to preheat the
compressor.
Do not turn OFF the main power of the indoor unit during season of heating or cooling.
1
Press and hold “Mode” switch for more than 3
seconds. The indication “ ” (automatic cooling/
heating operation) is displayed.
When “Mode” switch is pressed at “ ”, the fan
operation is started.
Displayed settings remain
illuminated for 10 seconds after
the unit operation is stopped
before going dark.
Indicators for temperature
setting, fans speed, and
airow angle are displayed.
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