12
ALARM
POSSIBLE CAUSE
A21 ROTATE PHASE
UPS input phases sequence is not correct
1) Turn off the UPS and rotate phase sequence
2) Turn on UPS again
A22 OUTPUT OFF
Output OFF alarm
- Output switch may be off.
- A fault may be in the output. Check the output components.
A23 MODE FAILURE
In parallel operation the slave device tries to operate as the same mode as
the master device, If the modes are different this message will appear.
Change the mode of the slave UPS from USER OPTION MENU. Press EN-
TER button for 3 seconds after mode selection, then restart the UPS.
A24 P.FAILURE 10
RS485 failure
A25 PAR. PSP FAIL
Power supply error in parallel controller board.
A26 4 CABLE FAIL
Master-Slave digital cable connection error.
A27 P.FAILURE 13
Parallel controller board failure, online UPS found in parallel system.
A28 PLUG IN DIG.
Digital connection cable plug in failure
A31 DUBL UPS NUMBER
Parallel UPS numbers are same change one of them
A40 CANT FIND PR
Parallel mode is selected but main controller could not find parallel control
board.
Select ONLINE mode from SETTING MENU.
Turn off the ups and turn on again.
A41 P.BAL.FAILURE
In parallel operation current sharing is not okay
A42 BATTERY TEST
Performing battery test
A43 P.SYNC.FAIL
In parallel system SLAVE UPS is not synchronized to MASTER UPS
1) Wait for 10 seconds the UPS will be restart
A48 STATIC BYPS.
Load is transferred statically to bypass
A50 EMERGE.STOP
Emergency stop button is pressed.
A51 MAINT SW.ON
Maintenance bypass switch is open. (optional)
A53 CHECK +6V
Check +6V on them main controller board.
A54 CHECK DC1
Battery voltage is below the lower limit.
A55 PDLY FAIL
Parallel delay fault
A59 REF FAILURE
2.5 V ADC reference voltage on MPB211 main controller board exceeds
predefined tolerances.
