HRX-OM-Q026 
Chapter  2   Name  and  Function  of  Parts 
 
HRSH Series  2.4 Operation Display Panel 
 
2-5   
2.4  Operation Display Panel 
The operation panel on the front of the product controls the basic operation 
of the product. 
Fig. 2-4 Operation display panel 
 
Table 2-4:Operation display panel 
Digital display 
(7 segment, 
4 digits) 
Displays the temperature and pressure of the circulating 
fluid and alarm codes. 
Displays the set temperature of the circulating fluid and the 
set values of other menus. 
Displays the unit of display temperature (
o
C or 
o
F). 
Displays the unit of display pressure (MPa or PSI). 
Turns ON during remote operation by communication. 
・Turns ON when the product is started and in operation. Turns OFF 
when the product stops. 
・Blinks during stand-by for stop (Interval 0.5 seconds). 
・Blinks during independent operation of the pump (Interval 0.3 
seconds). 
・Blinks while the anti-freezing function is being set (During standby: 
Interval 2 seconds, During operation: Interval 0.3 seconds). 
・Blinks during warming up function (During standby: Turns ON for 0.5 
seconds and OFF for 3 seconds, During operation: Interval 0.3 
seconds.) 
Blinks with buzzer when alarm occurs (Interval 0.3 seconds). 
Blinks while AL25 is OFF (Turns ON for 0.5 seconds and OFF for 3 
seconds.) 
Turns ON when the fluid level lowers below “L” (low) level. 
Turns ON while the run timer or stop timer function is working. 
Turns ON when the product is in automatic operation. 
Makes the product start or stop. 
Moves from the main menu (display which shows circulating fluid 
temperature, pressure and etc.) to the other menus (entry of set 
values and monitor screen). 
Changes the item in menu and enters the set value. 
When the [MENU] and [RUN/STOP] keys are held down 
simultaneously, the pump starts running independently. 
Press the [▼] and [▲] keys simultaneously. This will stop the alarm 
buzzer and turns OFF the [ALARM] light. 
Keep the [▼] and [▲] keys pressed down simultaneously for 3 
seconds to reset AL46 and AL48. (After resetting AL48, WAIT” ” 
will be displayed and the product cannot start running for 40 seconds. 
Restart 40 seconds later after resetting.