UPS IST7 (10KVA-40KVA)
User Manual
5 Use and Operation
73
NO.
Fault symbol
Buzzer status
Meaning
fault
15
Single-ended
fault
Slow beep
Fall-off fault at one ends of the parallel wire.
16
Auxiliary
power supply
failure
Long beep
UPS internal working power failure, if it cannot
be automatically recovered, please report
repair promptly.
17
Fan failure
Urgent beep
(alarm once
about every
0.2s)
Fan fault warning prompt, please check the fan
for damage or blocking.
18
CAN fault
Slow beep
(alarm once
about every
2.0s)
The CAN communication of parallel system
abnormal, please check if the parallel wire is
damaged or there is only one UPS in parallel
system works.
19
SCI fault
Long beep
UPS internal communication abnormal, if the
continuous alarm cannot be restored, please
report repair promptly.
20
There is no
redundancy in
the parallel
UPS
Slow beep
(alarm once
about every
2.0s)
The total output load of the UPS parallel
system exceeds the full load of the single
machine, check that the output load exceeds
the requirements for redundant backups.
21
Main power
abnormal
Long beep
The mains power input phase sequence is
abnormal, please check the main power input
wiring.
3 continuous
alarms at 10s
intervals
The main power input occur lack N fault,
power down failure, overvoltage protection,
under voltage protection, over-frequency fault,
under-frequency fault, please check whether
the main power input status is normal.
22
Bypass
Slow beep
At mains status, the bypass voltage abnormal,
