Smartbitt SBOL50KTIII-3, Service Manual

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8. Trouble Shooting
This section describes how to find the troubles when UPS is abnormal. We suggest you to follow the
service procedure below:
1. Check the UPS status via LED and LCD display, the sound of the buzzer and get the warning
or fault code via the RS232 if possible, otherwise listen to the description of end users.
2. Inspect failure board for static checking.
3. Replace failure components.
4. Static checking.
5. Power-on checking.
6. Test after repair.
Following section will help service person to solve the most problems.
8.1 LCD Panel Display Pattern Definition
8.1.1 Trouble shooting for warning icon in LCD display
Any warning display implies some abnormity happened to the UPS, indicating that some situation that
may endanger the reliability of the UPS has occurred, but these situations don’t immediately lead to
interruption of power supply.
LCD icon
(Flashing)
Code
Alarm Possible cause Action
01 1 Beeping / second Battery Open Check the battery wiring
02 1 Beeping / second Input Neutral loss Check the input N wiring
04 1 Beeping / second line phase error Check the input wires
05 1 Beeping / second Bypass phase error Check the input wires
07 1 Beeping / second Battery Over Charge
Check the output voltage of
the battery and the charger
08 1 Beeping / second Battery low Check the battery voltage
09 2 Beeping / second Over load warning Check the loads
0A 1 Beeping / second Fan lock warning Check the fans and wires
0B 1 Beeping / second EPO active
Check the EPO plug and
EPO cable
0D 1 Beeping / second Over temperature
Check the loads, ventilation,
ambient temperature
0E 1 Beeping / second Charger Fail Check the charger