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5 Trouble shooting
Please contact the distributor if problems can not be solved by the trouble shooting
below
No
1
Problem description
A. Input power absent
Use Multi-meter to measure the input to see if
diagnostics
B. Low input
it is normal or not.
the UPS is in battery mode
3
No alarm but no output
The UPS doesn’t start after
4
pressing On button
5
Solution
No display on the LCD, no self-
AC normal but AC indicator off,
2
Probable causes
AC indicator blinking
A. Input circuit breaker off.
B. Input power connection
problem
Output connection problem
A. time of pressing ON button is
insufficient.
A. Switch on input breaker
B. Check the connection and re-do.
Check the connection and re-do
A. Press and hold On button for 1s
B. Disconnect all loads and restart
B. Overload
Input AC is beyond normal range
Pay attention to the backup time if the UPS is
in battery mode
Buzzer beeps twice every
6
second & LCD shows “output
UPS overload
Disconnect some loads
A. Battery circuit breaker off or
A. Switch On the breaker & check the battery
overload”
”Fault indicator On and the LCD
7
shows “battery fault”
Fault indicator on and the LCD
8
shows ”charger fault “
9
Abnormal backup time
poor connection
connections
B. Reverse battery connection
B. Check the battery polarity
C. Battery defective
C. Contact distributor to replace the battery
Charger defective
Contact distributor
A. Battery not fully charged
B. Battery Bad
A. Charge battery for 8 hours when AC is
normal, then test the backup time again
B.
Contact distributor to replace battery
A Check to see if there is wind blowing out
Long beeps and fault indicator
10
on, the LCD shows
from fans
Over temperature inside UPS
over-temperature
B Move objects away from the UPS
C Wait till the UPS becomes cool and restart
the UPS
Long beep fault indicator on and
11
the LCD shows “output short
Output short circuit
Eliminate the short circuit and restart the UPS
Fault inside UPS
Contact distributor
circuit ”
12
Long beeps and fault indictor on
and the LCD shows “rectifier
fault”/“inverter fault”/“auxiliary
power fault”/“output fault”
13
Abnormal sound or smell
Fault inside UPS
shut down the UPS immediately and Contact
distributor
Please provide the UPS model, SN when calling distributor for maintenance.
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