SmartSolar MPPT Manual

16
4. Troubleshooting
Problem
Possible cause
Solution
Charger does not
function
Reversed PV connection Connect PV correctly
Reverse battery
connection
Non replacable fuse
blown.
Return to VE for repair
The battery is not fully
charged
A bad battery connection
Check battery
connection
Cable losses too high
Use cables with larger
cross section
Large ambient
temperature difference
between charger and
battery (T
ambient_chrg
>
T
ambient_batt
)
Make sure that
ambient conditions
are equal for charger
and battery
Only for a 24V or 48V
system: wrong system
voltage chosen (e.g. 12V
instead of 24V) by the
charge controller
Set the controller
manually to the
required system
voltage
The battery is being
overcharged
A battery cell is defect
Replace battery
Large ambient
temperature difference
between charger and
battery (T
ambient_chrg
<
T
ambient_batt
)
Make sure that
ambient conditions
are equal for charger
and battery