93
UPS internal
battery
disconnect
start the UPS with no-load.
UPS internal
system fault
Back up time become
short
Keep the UPS battery
recharging more than 3
hours
Check the load level and
disconnect the non-critical
equipments,
Battery
maturing,
capacity
descend
Replace with new batteries,
contact the supplier to get
the new batteries and spare
parts.
UPS doesn’t have any
power going through
even mains power on
UPS input
breaker
disconnected
Reset the circuit breaker by
manual.
Table 15. UPS troubleshooting
Note:
When the output is short-circuited, the action of UPS protection will show up.
Before turning off the UPS, make sure to disconnect the entire loads and cut off
the mains power supply, otherwise it will make the AC input short circuit.
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