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SHUTDOWN indicator is lit,
ALARM indicator blinks,
OVER TEMP./FAULT is lit or
blinks and alarm sound.
Once the UPS started, UPS
alarms a short beep sound
periodically.
The UPS operates normally
but sound a short beep
peroidically or the UPS
supplies backup power for a
short time and returns to
normal operating.
Blackout occured and UPS
supplies backup power.
But when the utility power
returns to normal, the
UPS still supplies backup
power.
Once start-up the UPS, any
circuit breaker has tripped.
The UPS operates normally
but does not supplies
power to loads.
Power source is normal but
the UPS supplies backup
power.
Symptoms
Possible causes
Solutions
The UPS is over temperature.
The UPS has fault.
The UPS has fault.
A power sag occurred in too short a
period for the user to sense. But the
UPS can detect that abnormal
condition.
The input voltage is out of range which
is too high or too low voltage.
UPS is overloaded or short circuited or
the circuit breaker is improper rating.
OUTPUT circuit breaker (if available) is
turned off.
OUTPUT FUSE is blown.
INPUT circuit breaker is turned off.
INPUT FUSE is blown (if available).
1. Press ON button to mute the alarm
sound.
2. Turn off loads.
3. Press OFF button to shutdown the UPS.
4. Wait until the temperature is cool then
restart the UPS again.
1. Press ON button to mute the alarm
sound.
2. Press
button to view fault events.
Then contact service center.
1. Press ON button to mute the alarm
sound.
2. Press
button to view fault events.
Then contact service center.
No need to do anything.
1. Press ON button to mute alarm sound.
2. Turn off loads and wait until the input
power is in the acceptable range (the
UPS operates normally) then turn on
loads again.
1. Turn off the UPS.
2. Recalculate and verify the system.
3. Check circuit breaker rating.
4. If the circuit breaker trips again when
restart the UPS, contact service center.
Turn on OUTPUT circuit breaker
(if available).
1. Turn off the UPS
2. Check if the fuse is blown, replace new
one with same type and rating.
Turn on INPUT circuit breaker.
1. turn off the UPS
2. Check if the fuse is blown, replace new
one with same type and rating.
