Automatic Cooling/Heating Operation - Hitachi PC-ARF Technical Catalogue

4 Individual remote controls
PC-LH3(A/B)

4.4.4.4 Automatic Cooling/Heating Operation

This function is only available for DC Inverter UTOPIA series (single combination) and SET-FREE series (heat recovery
system).
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Function
Automatic cooling/heating operation is automatically switched cooling and heating based on the set temperature as follow-
ing inlet air temperature conditions.
The cooling operation is performed when the inlet air temperature is approximately 3 ºC higher than set temperature.
The heating operation is performed when the inlet air temperature is approximately 3 ºC lower than set temperature.
N O T E
• If the fan speed is set to "Lo" during the heating operation, the operation tends to be stopped by activating the protection devices, etc.
In this case, set to "Me", "Hi" or "Hi2".
• The heating operation is not available when the ambient temperature is higher than approximately 21 ºC.
• The threshold of switching temperature against the setting temperature is + 3 ºC in case of using this function. Therefore, this function
should not be utilized in the room where the accurate temperature and humidity controls are required.
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Start operation
Press and hold the "MODE" switch for more than 3 seconds. The indication "AUTO" (automatic cooling/heating operation)
will appear.
The indications of setting temperature, fan speed and air flow angle are turned ON depending on the condition of control.
N O T E
• The automatic cooling/heating operation is required other setting. Contact your distributor and contractor for details.
• When the "MODE" switch is pressed at "AUTO", the fan operation is started.
Point the transmitter towards the receiver kit and press "RUN/STOP" switch. When the transmitting indication "
flashes, the " " lamp (yellow) on the receiver will be turned on briefly. The RUN indicator (red) on receiver is turned ON
and the operation is started.
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Temperature, fan speed and air flow direction setting
To set the temperature, fan speed and air flow direction, refer to the item Setting Method.
180
TCGB0106 rev.0 - 12/2014
"AUTO" is set
AUTO
The indications of setting temperature, fan
speed and air flow angle are turned ON.
AUTO
°C
Me
"