14
SunLight Series UPS User Manual
4.4.4 FAULT Codes
FAULT 1
“BYPASS FAILURE”
An AC voltage exists at the output of the UPS, although the
inverter is not in operation . In such a case , disconnect all the critical equipment from
the UPS and turn it off and on again. If it doesn't start operating ,
please call for
service
.
FAULT 2
“INVERTER FAILURE”
Inverter can not generate AC output. Turn-off the UPS and
then turn it on again . If it doesn't start ,
please call for service
.
FAULT 3
The temperature on the heatsink inside the UPS cabinet has exceeded 90 °C
three times in the last 30 minutes. In such a case , the UPS should be turned-off and
on again to resume normal operation.
FAULT 4
"Output Failure" alarm has occurred 4 times in the last 10minutes.
Please call for service
.
FAULT 5
Inverter is not generating AC output since the battery voltage is below the lower limit .
Turn-off the UPS and on again.
FAULT 6
"Possible Battery Failure"
Please call service
for checking the batteries.
FAULT 7
Rectifier fault.
Please call service
for checking the UPS.
FAULT 8
Line voltage out of tolerance.
4.5
Automatic battery test system (optional) :
There are some conditions to make this test ( e. g availability of by-pass supply, line synchronization, . a
min. time requirement since the last line failure etc.). The first test is performed automatically, 8 hours
later following the first turning on of the UPS. There is a 65 hours interval between two successive tests
an each test lasts about 36 seconds.
During the battery test operation, the inverter power will be supplied from batteries . At the end of
this test ,if the battery voltage is below a predetermined value, " BATTERY FAILURE / BATTERY LOW
Fault messages appear on the LCD panel and the UPS starts operating in By-Pass mode.
In this case you have to call your service.
If the batteries are in normal conditions the system will start operating in normal mode after 36 sec.
This test protects your operation against unexpected battery failures, and indicates you if there are any
damaged batteries. It also discharges the batteries periodically, which is a good thing for extending
battery life.
