HRX-OM-Q026 
Chapter  6   Alarm  Notification  and  Troubleshooting 
 
6.4 Other Errors  HRSH Series 
 
  6-10 
6.4  Other Errors 
  How to check other errors 
Possible causes and countermeasures for failures with no alarm number 
display are shown in ’’Table 6-4’’. 
 
Table 6-4 Possible causes and countermeasures for failures without alarm number 
The operation panel 
displays nothing. 
The breaker of the user’s power 
supply or/and the optional breaker 
is/are not turned ON.   
The breaker of the user’s power 
supply or the optional breaker has 
failed. 
No power supply. 
(e.g. Breaker(s) in the power supplying 
route has not been turned ON.) 
The breaker for the user’s facility 
or the optional breaker has tripped 
due to short-circuit or leakage of 
electricity. 
Repair the short-circuited part or the 
electricity leaking part.   
The  [RUN]  light  does 
not  turn  ON  when  the 
[RUN/STOP]  key  is 
pressed. 
Communication setting has been 
turned ON. 
Check if the communication setting has 
been turned ON. 
Failure of the [RUN] light 
Failure of the [RUN/STOP] key 
   Check the supply voltage with a tester.