Alarm Indication - Hitachi PC-ARF Technical Catalogue

4 Individual remote controls
PC-ARH
* In case of Standard Unit
H1 Maintenance alarm.
This function is used in order to display or not the maintenance alarm.
When this function is "01", maintenance alarm will not be displayed.
H2 No automatic control indication.
This function is used in order to display or not the no automatic control indication.
When this function is "01", no automatic control indication will not be displayed.
H3 Operation mode change restriction.
This function is used in order to configure restrictions about the operation mode change action.
When this function is "00", the operation mode change is disabled.
When this function is "01", the operation mode change is only allowed from central control unit and mode FAN.
When this function is "02", there are no restrictions.
H4 Ventilator changeover.
This option is used in order to allow the central control when the unit is forced to stop.
The function is used in order to configure the changeover.
When this function is "00", the ventilation changeover works with air conditioning only.
When this function is "01", the ventilation changeover works with ventilation only.
When this function is "02", the ventilation changeover works with air conditioning and ventilation.
H5 Central control available after forced stoppage.
This option is used in order to allow the central control when the unit is forced to stop.
When this function is "01", the central control is available.

4.3.7 Alarm indication

The run LED (green) will flash. The LCD screen will show the following information:
- No. of indoor unit affected by the alarm.
- Alarm code.
- Unit model.
- No. of indoor units connected to the system.
N O T E
• The Alarm code corresponds to the alarm that is happening on the unit.
• Refer to the Service Manual of the unit to know the meaning of the alarm code.
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TCGB0106 rev.0 - 12/2014