Troubleshooting
33
7 Troubleshooting
This chapter describes checking the UPS’s status. This section also indicates various UPS
symptoms a user may encounter and provides a troubleshooting guide in the event the UPS
develops a problem. Use the following information to determine whether external factors
caused the problem and how to remedy the situation.
If UPS alarms and buzzer sound, please press “
” to get alarm code on the menu of alarm
code on LCD. And press and hold“
”to manually fault clear. If alarms is still existent, please
check the problem follow the Table 7-1:
LCD display in fault mode is shown as below:
Fault icon
Fault code
Fault mode
Fig 7- 1: Fault code
Fault code informing:
Fault Code
Cause
Solution
35 - 39
Inverter forbidden
/
40 - 44
over temperature
Rectifier heat sink is over temperature or the
temp sensor is not connected correctly.
Check if fans are working normally
Check if anything block ventilation
Check if the sensor is connected correctly
Check if the environmental temp is over the
range of UPS
45 - 49
Output shorted
Load is abnormal or output breaker is shorted.
Check if load is abnormal and the faulty load
is shutdown
Check if output breaker is faulty
If the faulty load is removed, please manually
fault clear to restart UPS.
50 - 54
Overload
Inverter is overload, please remove numbers
of non-critical loads, or else UPS could
transfer to bypass
If bypass overload, Check the load and
remove some non-critical load until the load is
below 95%