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26
4. Operation
Operating mode/status
Fault status Description When the UPS has experienced a fault, the inverter will be blocked. It will display fault code
in screen and the icon will light up. The code meaning can be found in the Fault Code table 4.9
below.
LCD screen
4.9 Fault Codes
Fault code Fault event Icon
01 Bus start failure None
02 Bus over None
03 Bus under None
04 Bus imbalanced None
06 Converter over current None
11 Inverter soft start failure None
12 High inverter voltage None
13 Low inverter voltage None
14
Inverter A output (line to neutral)
short circuited
15
Inverter B output (line to neutral)
short circuited
16
Inverter C output (line to neutral)
short circuited
17
Inverter A-B output (line to line) short
circuited
18
Inverter B-C output (line to line) short
circuited
19
Inverter C-A output (line to line) short
circuited
Fault code Fault event Icon
1A Inverter A negative power fault None
1B Inverter B negative power fault None
1C Inverter C negative power fault None
21 Battery SCR short circuited None
24 Inverter relay short circuited None
29 Battery fuse broken in Battery Mode None
31 Parallel communication failure None
36 Parallel output current unbalance None
41 Over temperature None
42 DSP communication failure None
43 Overload
46 Incorrect UPS setting None
47 MCU communication failure None
48
Two DSP firmware versions are
incompatible
None
49
Input and output phases are
incompatible
None
4.10 Warning Indicator
Warning Icon (flashing) Alarm
Battery low
Beep every second
Overload
Beep twice every second
Battery disconnected
Beep every second
Overcharge
Beep every second
EPO enable Beep every second
Fan failure/Over-temperature Beep every second
Charger failure Beep every second
I/P fuse broken Beep every second
Overload 3x in 30 minutes Beep every second
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