HRX-OM-Q026 
Chapter  6   Alarm  Notification  and  Troubleshooting 
 
6.3 Troubleshooting  HRSH Series 
 
  6-4 
6.3  Troubleshooting 
6.3.1 Alarm contents, causes, and troubleshooting 
Troubleshooting method varies depending on which alarm has been 
generated. Refer to ’’Table 6-1 Alarm codes and troubleshooting (1/3)’. 
  Instructions to reset the alarms after eliminating the causes of the alarms 
explained below. 
●  Confirm that the alarm display is shown. Alarms can only be reset on 
this screen. 
●  Press [▼] and [▲] keys down simultaneously. 
●  The alarm is reset, and the [ALARM] light turns OFF. 
The operation panel displays the circulating fluid temperature and the 
set circulating fluid temperature. 
Contact signal output for contact input/output communication stops. 
(Refer to the Operation Manual Communication Function for more 
details.) 
 
   
 [      ] light turns ON only when “AL01 Low level in tank” alarm is being 
generated. 
●  Operation status of the thermo-chiller during the alarm is being 
generated can be customized by the user. Refer to “5.21 Alarm 
Customizing Function” for more details. 
 
: Compressor, pump, and fan stop operation. 
: Compressor, pump, and fan continue operation. 
: Compressor and fan stop operation, and pump continues operation. 
: This alarm will not be generated. 
 Fan operation stop is only for the air-cooled type.