User manual
13
troubleshooting
Symptom Possible Cause Action to Take
The UPS will not turn Output short or overload shutdown. Reduce the amount of connected equipment and
on. reset the circuit breaker(s).
Computer interface or accessory Disconnect the interface.
problem.
Weak Battery/Internal Weak batteries. Replace the batteries.
Fault LEDs are lit; the UPS
Internal UPS system fault. Return for service.
emits a constant tone.
The UPS beeps and runs Sags or spikes have been detected No action is needed: This is normal operation as the
on the batteries even and the UPS is briey transferring UPS protects against abnormal utility voltages.
though normal line connected equipment to its backup
power is present. power source.
The input circuit breaker tripped. Reduce the load and reset the circuit breaker.
Bad input connection. Check the connection.
The UPS doesn’t have Low battery condition. Disconnect any equipment and recharge the
the expected run time; battery for eight hours.
low battery warning is
Bad battery. Return for service.
indicated.
The check battery LED The UPS is shut down and the Allow the UPS to return to normal status once power
is on; the UPS isn’t battery is discharged due to an is restored and the battery regains a sufcient charge.
operating. extended power outage.