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9. TROUBLESHOOTING – solar charge controller
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
Large ambient
temperature difference
between charger and
battery
Make sure that ambient
conditions are equal for
charger and battery
Only for a 24V system:
wrong system voltage
chosen (12V instead of
24V) by the charge
controller
Disconnect PV and battery,
after making sure that the
battery voltage is at least
>19V, reconnect properly
(reconnect battery first)
The battery is
being overcharged
A battery cell is defect
Replace battery
Large ambient
temperature difference
between charger and
battery (Tambient_chrg <
Tambient_batt)
Make sure that ambient
conditions are equal for
charger and battery
10. MAINTENANCE
This product does not require specific maintenance. It will suffice to check all connections
once a year. Avoid moisture and oil/soot/vapours and keep the device clean.
