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• Turn on the input breaker of the remaining UPS and the system will
transfer to Bypass mode. Set the maintenance switches from "BPS" to
"UPS position and put the maintenance bypass covers back on.
• Turn on the remaining UPS according to the previous section.
WARNING (Only for the parallel system)
● Before turning on the parallel system to activate inverter, make
sure that all unit's maintenance switch at the same position.
● When parallel system is turned on, please do not operate the
maintenance switch of any unit.
● The parallel system DOES NOT support ECO mode. Therefore,
please DO NOT "enable" ECO mode in any unit.
3.6 Fault Code
Fault
Fault event
code
01
Bus start failure
02
Bus over
03
Bus under
04
Bus unbalance
Converter over
06
current
Inverter soft start
11
failure
12
High inverter voltage
13
Low inverter voltage
Inverter L1 output
14
(line to neutral) short
circuited
Fault
Icon
Fault event
code
None
41
Over temperature
DSP communiction
None
42
failure
None
43
Overload
None
46
Incorrect UPS setting
MCU communication
None
47
failure
Two DSP firmware
versions are
None
48
incompatible in
parallel system.
Bypass phase short
None
60
circuited
Bypass SCR short
None
61
circuited
Bypass SCR open
None
62
circuited
Icon
None
None
None
None
None
None
None
None
None
63
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