Troubleshooting - Tripp-Lite SmartOnline SUT20K Manual Del Propietário

11. Troubleshooting

If the following alerts are shown on the LCD, follow the solutions listed below.
No. Alarm Message
1 SHORT CIRCUIT
2 INVERTER FAIL
3 OVER TEMPERATURE
4 PFC AMBIENT OVER TEMP . FAIL
5 INVERTER SCR OPEN
6 BYPASS SCR OPEN
7 OVERLOAD
8 FAN FAIL
9 BYPASS SCR SHORT FAIL
10 INPUT SCR SHORT FAIL
11 OUTPUT FUSE FAIL
12 AUX POWER FAIL
13 INDUSTRY PROTECT
14 BATTERY REVERSED
15 INPUT PHASE SEQUENCE FAIL
16 INVERTER SOFT START FAIL
17 INNER COMMUNICATION FAIL
18 PFC SUPERVISOR FAIL
19 DC BUS HIGH SHUTDOWN
20 DC BUS LOW SHUTDOWN
21 INPUT FUSE FAIL
22 INVERTER SUPERVISOR FAIL
23 PFC SOFT START FAIL
24 BYPASS PHASE SEQUENCE FAIL
25 NTC OPEN FAIL
26 INVERTER OUTPUT SCR SHORT
27 BATTERY LOW SHUTDOWN
28 BATTERY LEVEL FAIL
Note: If all possible causes are eliminated but the alarm still appears, contact Tripp Lite Technical Support.
Possible Cause
Output has a short circuit issue.
Inverter is damaged.
The UPS temperature is too high.
The UPS temperature is too high.
Inverter SCR driver is abnormal.
Bypass SCR driver is abnormal.
The UPS is overloaded.
Fans are damaged or stuck.
1. Bypass SCR driver is damaged.
2. Bypass SCR has a short circuit issue.
1. Input SCR driver is damaged.
2. Input SCR has a short circuit issue.
Output fuse is broken.
Auxiliary power is damaged.
In industrial mode, output has an over
current issue.
Batteries are connected in reverse.
Input phase sequence is wrong.
1. Inverter detection is abnormal.
2. Inverter's driver is damaged.
Inner communication cable is not well
connected.
PFC CPU is damaged.
1. Output has abnormalities.
2. The UPS has internal faults.
1. Output has abnormalities.
2. The UPS has internal faults.
Input fuse is broken.
Inverter CPU is damaged.
1. Rectifier tube is damaged.
2. Driver is damaged.
Bypass phase sequence is wrong.
1. NTC is not connected well.
2. NTC line is broken.
1. Inverter SCR driver is abnormal.
2. Inverter SCR is damaged.
Battery voltage is low.
Battery test result is abnormal
41
Solution
Contact service personnel.
Contact service personnel.
1. Choose a well-ventilated area.
2. Decrease load on UPS.
3. Check if fans run normally.
4. Clean filters if installed.
1. Choose a well-ventilated area.
2. Decrease load on UPS.
3. Check if fans run normally.
4. Clean filters if installed.
Contact service personnel.
Contact service personnel.
Remove some unnecessary loads to let
total load capacity below 95%.
Contact service personnel.
Contact service personnel.
Contact service personnel.
Contact service personnel.
Contact service personnel.
Check if output is normal.
Check the batteries' polarity.
Check input phase sequence.
Contact service personnel.
Contact service personnel.
Contact service personnel.
Contact service personnel.
Contact service personnel.
Contact service personnel.
Contact service personnel.
Contact service personnel.
Check bypass phase sequence.
Contact service personnel.
Contact service personnel.
Charge the batteries.
Contact Tripp Lite Technical Support