Blown Fuse; Battery Settings Too Low - Victron energy BlueSolar MPPT 75/10 Manual

Reverse battery polarity has the potential to damage the solar charger, causing its fuse to blow for fail-safe protection. This
fuse might blow before the external fuse in the battery cable. If you encounter a blown solar charger fuse, before attempting
replacement, refer to the

Blown fuse

charger may still be considered faulty even after a fuse replacement.
The solar charger is not protected against reverse battery polarity, and any resulting damage is not covered under warranty.
8.5.4. Blown fuse
The solar charger is equipped with an accessible fuse, which typically blows when the battery is mistakenly connected in reverse
polarity.
Steps to check the fuse:
Step 1 Remove the fuse.
Use a multimeter in resistance mode to check for continuity.
Step 2
If the fuse is faulty, verify the battery polarity and correct it if necessary. Refer to the
Step 3
chapter. Keep in mind that reverse battery polarity is not covered by warranty.
Step 4 If the new fuse also blows, the unit may be considered faulty.

8.5.5. Battery settings too low

If the solar charger's charge voltage and current are well below the manufacturer's recommended levels, the battery charging
process may become inadequate or excessively slow. Incorrect configuration can be a contributing factor, including:
• Setting the "Battery voltage" parameter too low.
• Setting the ''Absorption voltage" and "Float voltage" parameters too low.
• Setting the "Max charge current" parameter to zero or an excessively low value.
VictronConnect app, showing battery (system) voltage, charge current and charge voltages settings.
Page 46
MPPT solar charger manual
chapter to assess if replacing the fuse will fix the solar charger. In some cases, the solar
Reverse PV polarity [47]
Troubleshooting