KStar 6kVA - 5 Trouble Shooting

- 26 -
5 Trouble shooting
Please contact the distributor if problems can not be solved by the trouble shooting
below
No Problem description Probable causes Solution
1
No display on the LCD, no self-
diagnostics
A. Input power absent
B. Low input
Use Multi-meter to measure the input to see if
it is normal or not.
2
AC normal but AC indicator off,
the UPS is in battery mode
A. Input circuit breaker off.
B. Input power connection
problem
A. Switch on input breaker
B. Check the connection and re-do.
3
No alarm but no output Output connection problem Check the connection and re-do
4
The UPS doesn’t start after
pressing On button
A. time of pressing ON button is
insufficient.
B. Overload
A. Press and hold On button for 1s
B. Disconnect all loads and restart
5
AC indicator blinking Input AC is beyond normal range
Pay attention to the backup time if the UPS is
in battery mode
6
Buzzer beeps twice every
second & LCD shows “output
overload”
UPS overload Disconnect some loads
7
”Fault indicator On and the LCD
shows “battery fault”
A. Battery circuit breaker off or
poor connection
B. Reverse battery connection
C. Battery defective
A. Switch On the breaker & check the battery
connections
B. Check the battery polarity
C. Contact distributor to replace the battery
8
Fault indicator on and the LCD
shows ”charger fault “
Charger defective Contact distributor
9
Abnormal backup time
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
10
Long beeps and fault indicator
on, the LCD shows
over-temperature
Over temperature inside UPS
A Check to see if there is wind blowing out
from fans
B Move objects away from the UPS
C Wait till the UPS becomes cool and restart
the UPS
11
Long beep fault indicator on and
the LCD shows “output short
circuit ”
Output short circuit Eliminate the short circuit and restart the UPS
12
Long beeps and fault indictor on
and the LCD shows “rectifier
fault”/“inverter fault”/“auxiliary
power fault”/“output fault”
Fault inside UPS Contact distributor
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.