20
Digital tube displays “L”
with red slowly flashing
Over load or
short circuit
Overload: Please reduce the
load and press the button
once, the controller will
resume to work after 3s;
Short circuit: when the first
short-circuit occurs, the
controller will automatically
resume to work after 10s;
when a second short-circuit
occurs, press the button, the
controller will resume to
work after 3s.
Digital tube displays “H”
with red slowly flashing
Too high
temperature of
controller
When heat sink of the
controller exceeds 85
℃
,
the controller will
automatically cut input and
output circuit. When the
temperature below 75
℃
, the
controller will resume to
work
Notes: No LED indicator.
Measure battery voltage with multimeter.
Min.6V can start up the controller.
Notes: No charging status LED indicator with normal connection.
Measure the input voltage of solar module, the input voltage must
be higher than battery voltage!