Hitachi PSC-A128WEB3 Operation Manual page 34

Vrf management system web enabled central controller
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NOTE:
● Emergency Stop is applicable only to Indoor Units corresponding to H-LINKII.
● The [Emergency Stop] function is not used when combining with the Central Controller.
● Set the External Input Signal for emergency stop from this section of software. Though Indoor units
themselves can be directly set, this setting can be invalidated according to the scheduled timer, or
other issues, such as internal input [ON], or control from monitor.
● Engage the external input signal for emergency stop for one minute or longer.
● Emergency Stop in this system is controlled over communication cables. In case of communication cable
disconnection, the system cannot be controlled as expected. Turn OFF the air conditioning units to cease
operation in such cases.
Mode Switch/Temperature Switch
NOTICE:
● The [Temp. switch] setting can only be used when the Temperature Display reads in degrees celsius.
● In [Mode switch] and [Temp switch], electrical consumption is lowered when any subsequent control is
manually overriden externally.
The [Mode switch] is a function command to stop when it is in "Heat" mode and to switch over to "Fan"
mode when in any other Operation Mode than "Heat".
The [Temp switch] is a function used to set "Set temp" (-X°C) when in "Heat" mode and (+Y°C) when in
any other Operation Mode than in "Heat".
However, the Temperature Switch doesn't operate during AUTO Cool/Heat.
Neither the [Mode switch] or [Temp switch] are designed to guarantee lowered electricity consumption.
NOTE:
● The [Mode switch] and the [Temp switch] cannot be used at the same time.
● In the event that the [Temp switch] is activated and engaged in multiple external inputs, the change of
temperature is made following an order of priority of external inputs when those external inputs are multiple
and in such case that all those external inputs concerning temperature control are canceled.
● The [Mode switch] and the [Temp switch] cannot be used at the same time. If the [Mode switch] and the
"ON" mode are set in the same external input, the unit will continue running in "HEAT" mode because the
"ON" mode has a higher priority.
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