Battery connected
with correct
polarity
Battery connected
with wrong
polarity
Reverse polarity
Short circuit
Overcurrent
Thermal overload
No connection
Reverse current
Overvoltage
Undervoltage
WARNING: The combination of different error conditions may cause damage to the
controller. Always remove an error before you continue connecting the controller!
At the solar
terminal
Unrestricted
Unrestricted
Yes, not at 24V
system voltage.
Acoustic Warning
Unrestricted
Controller limits
current.
Controller is
electronically
protected.
Unrestricted
Unrestricted
Varistor 56 V, 2.3 J
Normal operation
39
At the battery
terminal
Normal operation
Unrestricted.
Acoustic Warning
Yes, if only the
battery is
connected.
Unrestricted.
CAUTION: Battery
must be
protected by
fuse.
-------
-------
Unrestricted
-------
Max. 40 V
Controller switches
off load terminal.
At the load
terminal
Unrestricted
Unrestricted
Load output is
protected, but
loads might be
damaged.
Unrestricted
Controller switches
off load terminal.
Controller switches
off load terminal.
Unrestricted
-------
Controller switches
off load terminal.
Controller switches
off load terminal.