Table of Contents
Advertisement
In case the UPS cannot work normally, it might be wrong in installation, wiring or operation. If all
these conditions are checked without solving the problem, please consult the local agent right away
and provide them with the information below.
（1） Product model name and serial number.
（2） Describe the fault in detail, such as LCD display info, LED lights status, etc.
Read the user manual carefully.
No.
Problem
Utility is connected but
the UPS cannot be
1
powered ON.
Utility normal, but
Utility LED light not
2
on, the UPS is
operating in battery
mode
The UPS does not
indicate any fault, but
3
no output voltage
4
Utility LED is flashing
Battery LED is
5
flashing, but no charge
voltage and current
Buzzer every 0.5
seconds, displays
6
"output overload"
Buzzer long beeps,
7
LCD display "29"fault
code
The UPS only works
8
on bypass mode
9
Cannot Black start
Buzzer beeps
continuously and LCD
10
indicates 1,3,5,9,15,
etc. fault codes
KE 4256-3230 Keatec T Series UPS 10-40K 380Vac Users Guide English 20170126
Appendix 2 Problems and Solutions
Possible reason
Input power supply is not
connected; Input voltage low;
Input switch of UPS is not
switched ON.
The input breakers of UPS
are not ON; input cable not
well connected
Output cable not well
connected; Output breaker
not switched ON
Utility voltage exceeds UPS
input range.
Battery breaker not switched
ON, batteries are damaged,
reversely connected. Battery
number and capacity are not
set correctly.
Overload
The UPS output is in short
circuit
UPS is set to ECO mode, or
the transfer times to bypass
mode are limited.
Battery switch is not properly
closed. Battery fuse is blown
open. Battery reserve is low.
Wrong battery quantity set;
Power breaker in the rear
panel not ON.
UPS is out of order
Measure UPS input voltage /
frequency is within the window.
Check 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 output
breaker.
If the UPS operates in battery
mode, pay attention to the
remaining backup time needed.
Switch ON battery breaker. If
batteries are damaged, replace all
batteries and correct cable
polarity; Set the correct battery
number and capacity.
Remove some or all of the load
Make sure the load is not in short
circuit, and then restart the UPS.
Set UPS to working mode
(non-parallel), reset the transfer
times for bypass, re-start the UPS
Close the battery switch. Change
fuse. Recharge battery. Power ON
the UPS with AC and set battery
quantity. Switch ON power
breaker.
Consult with local agent for repair
This manual is for qualified personnel only.
Page 38
Solution
Advertisement
Table of Contents
