Hitachi PC-ARF Technical Catalogue page 492

6 Building air conditioning controls
CSNET WEB (PSC-A160WEB1)
Where:
Corrected temperature: Temperature used to calculate the change of operation mode.
Setting temperature: Temperature selected by CSNET WEB or by the remote control of the indoor unit.
N O T E
The remote control and the CSNET WEB always show the corrected temperature (the result is the setting temperature).
After adjust previously parameters, if unit is working in Auto Cool/Heat mode, it will be displayed on the status zone which
option is currently doing.
Considerations for the use of the Auto Cool/Heat mode
When the Auto Cool/Heat is used, the difference of 4°C programmed in the heating mode of each indoor unit should be
cancelled in all of them. Otherwise, there may be a conflict between the system program and the CSNET WEB program.
(See the Service Manual of the indoor unit for details about cancelling this misadjustment using the optional function b1).
However, if an optional remote sensor has been fitted in the rooms (one per indoor unit), the misadjustment is cancelled
automatically (not available in the FSGM RPK series).
If an indoor unit is defined by CSNET WEB in Auto Cool/Heat mode, all the indoor units connected to the same outdoor
Set-Free FS (or to the same CH Box in Set-Free FX systems) will change to the Auto Cool/Heat mode. This means that,
for example if one of the indoor units was adjusted for heating at 17ºC and the outdoor Set-Free FS or Set-Free FX CH Box
changes to cooling mode, according to the calculation of CSNET WEB, this indoor unit will begin to cool when it reaches
17°C. To prevent this kind of situation from occurring, take care when programming the timer.
For all the indoor units connected to a single outdoor Set-Free FS or Set-Free FX CH Box, the starting time in the morning
for the first unit (see Timer) should serve as the reference time and conditions for all the other units in the same system. At
night, the last indoor unit to change will be the reference point for all the other units of the system in question.
If a user selects a different mode with the individual remote control when the local mode is being used, it will later return to
the mode calculated by CSNET WEB. Thus it is not recommended to use the mode selector of the remote controls during
the Auto Cool/Heat operation of CSNET WEB in local mode. The temperature should only be regulated, if necessary, with
the  (up) or  (down) buttons. CSNET WEB will then select and adjust the necessary (and possible) mode by outdoor
unit (also in the LCD screen of the individual remote control).
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TCGB0106 rev.0 - 12/2014