3 USER GUIDE
BMS WARNING MESSAGE CAUSE ACTION
AC supply over voltage The internal AC converter output
voltage is too high
Contact supplier
AC supply under voltage The internal AC converter output
voltage is too low
Contact supplier
DC supply over voltage The DC input voltage is too high (over
32V)
Check DC input, refer to specifi ed input
range
DC supply under voltage The DC input voltage is too low (below
9V)
Check DC input, refer to specifi ed input
range
Solar supply over voltage The solar input voltage is too high
(above 25V)
Check solar input, refer to specifi ed
input range
Solar supply under voltage The solar input voltage is too low
(below 9V)
Check solar input, refer to specifi ed
input range
No temperature sensor connected The supplied battery sensor is not
connected or is faulty
Connect battery sensor, if faulty return
to supplier
LIN over current. Please check connections The remote cable may be shorted Check and/or replace remote cable
Low battery State of Charge House battery is almost fl at Reduce/remove loads on house battery
Other problems
FAULT ACTION
Low output current can occur when the unit is hot and
temperature derating is implemented to protect the BMS
Check that the unit is in a well ventilated space
The current display shows a negative current when there
are no loads on the house battery and the house battery is
charging
The current shunt connection is reversed
The unit clicks on and off when the input wiring is too
long for the wire gauge used or there is a high resistance
connection
Check the wiring and/or use thicker wire
The display shows wrong voltage or temperature Check the polarity of the voltage and temperature sensor
connections
Noticable oscillations between Boost and Absorption stages Check and select the correct battery type
32
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