Appendix 2 Problems And Solution - KStar YDC9300-B Operation Manual

Self-diagnostics
EPO(optional)
Noise Suppression
Alarms Audible & Visual
Status LED & LCD
Display
Reading On the LCD
Communication Interface
Operating Temperature
Storage Temperature
Environment
Dimensions
(W×D×H)mm
Other
Weight (Kg)
Safety Conformance
In case the UPS cannot work normally, it might be wrong in installation, wiring or operation.
Please check these aspects first. If all these aspects are checked without any problem, please
consult with local agent right away and provide below information.
（1） Product model name and serial number.
（2） Try to describe the fault with more details, such as LCD display info, LED lights status, etc.
Read the user manual carefully, it can help a lot for using this UPS in the right way. Some FAQ
(frequently asked questions) may help you to troubleshoot your problem easily.
No. Problem
Utility is connected but
the UPS cannot be
1
powered ON.
Utility normal but Utility
LED does not light on,
2
and the UPS operates at
battery mode
The UPS does not
indicate any failure, but
output do not have
3
voltage
4 Utility LED is flashing
Battery LED is flashing
but
5
no charge voltage and
current
Battery
USB, RS232, RS485, Parallel (optional), Coupler dry contact,
Intelligent slot, SNMP card (optional), Relay card (optional)
Humidity
Altitude

Appendix 2 Problems and Solution

Possible reason
Input power supply is not
connected;
Input voltage low;
The input switch of the
UPS is not switched on.
The input breakers of the
UPS are not switched on;
input cable is not well
connected
Output cable does not well
connected;
Output breaker do not
switch on
Utility voltage exceeds
UPS input range.
Battery breaker does not
switch on, or batteries are
damaged, or battery is
reversely connected.
Battery number and
capacity are not set
correctly.
Upon Power On and Software Control
Shut down UPS immediately
Advanced Battery Management
Complies with EN62040-2
Line Failure, Battery Low, Overload, System Fault
Line Mode, Bypass Mode, Battery Low, Battery Bad,
Overload & UPS Fault
Input Voltage, Input Frequency, Output Voltage, Output
Frequency, Load Percentage, Battery Voltage & Inner
Temperature
-25℃～55℃
0～95% non condensing
< 1500m.When>1500m,lower the rated power for use
Standard unit：250×900×868
Long run unit：250×580×655
125/33
CE,EN/IEC 62040-2,EN/IEC 62040-1-1
Measure if the UPS input
voltage/frequency is within the
window.
Check if UPS input is switched on
Switch on the input breaker;
Make sure the input cable is well
connected.
Make sure the output cable is well
connected;
Switch on the output breaker.
If the UPS operates at battery mode,
please pay attention to the remaining
backup time needed for your system.
Switch on the battery breaker. If
batteries are damaged, need to
replace whole group batteries,
Connect the battery cables correctly;
Go to LCD setting of the battery
number and capacity, set the correct
data.
38
0℃～40℃
180/37
Solution
181/38