Sensata Magnum Energy CSW3012-X Owner's Manual page 36

Problem Possible Cause/
During AC Unit is set to "Non-
input power Backup" mode (PS0)
outage, there and AC input power is
is no AC output not available.
power when
battery power
is available.
E01 or E05 Unit is operating
alarm activates normally. The alarm
in By-Pass indicates the battery
mode. voltage is low or
the battery is not
connected at all, and
there are external
DC loads drawing
currents from the
inverter's current-
limited trickle battery
charger—enough to
trigger either the E01
or the E05 alarm.
However, the unit
continues supplying
AC output power.
DC voltage This is normal. The
is measured voltage is supplied
at the DC by the inverter's
terminals trickle battery charger
without the with current-limiting
battery being protection.
connected.
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Condition
Change the PS0 setting to a
diff erent setting if you want
to turn the inverter on. With
the PS0 setting, the inverter is
completely off . When the AC
input power is not available
and the Power button is
pressed once, the display and
LEDs remain working for only
about 30 seconds. With this
setting, the unit provides AC
output power only when AC
input power is available.
Charge/connect the battery
bank or disable all the audible
alarms with the AL0 setting.
Note: The main purpose of
the battery charger is to keep
the unit's control electronics
working even without a
battery connected. Its power
is not necessarily enough
to work as a real trickle
charger for your battery bank.
Therefore, do not consider the
unit as an inverter & charger.
You can keep the battery
disconnected. However, if
the DC Input terminals of
the unit are connected to
a common DC bus being
shared by other DC loads, a
12V back feeding to those
DC loads can occur when the
DC bus is disconnected from
the common battery bank. In
that case, the corresponding
drawing current may trigger
the E01 or E05 alarms. In
cases where back feeding is
not desirable, consider using
a separate battery bank
disconnect switch for the unit.
4.0 Troubleshooting
Solution
31