HRX-OM-Q026 
Chapter  6   Alarm  Notification  and  Troubleshooting 
HRSH Series  6.1 Alarm Notification 
 
6-1   
Chapter 6  Alarm Notification and 
Troubleshooting 
6.1  Alarm Notification 
●  The product makes notification in the order shown below when any 
alarm is generated. The [ALARM] light blinks. 
●  The alarm buzzer sounds. 
●  The alarm number is displayed in the PV window on the digital display. 
●  Contact signal of the contact input/output communication is output. 
Refer to the Operation Manual Communication Function for more 
details.   
●  It is possible to read the alarm status using serial communication. 
Refer to the Operation Manual Communication Function for more 
details.   
●  This product has two types of operation depending on the alarm being 
generated. 
During the product operation, some of the alarms stop the product 
operation and some of them do not stop the operation with the alarm being 
generated. 
Refer to the “Table 6-1 Alarm codes and troubleshooting (1/3)”. When the 
operation stops due to the alarm, it is not possible to restart the operation 
until the alarm is reset. 
 
 
Fig. 6-1 Screen display of when an alarm occurs (if AL01 has occurred) 
  [      ] light turns ON only when “AL01 Low level in tank” alarm is being 
generated.