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MPPT solar charger manual
VictronConnect app, showing battery (system) voltage, charge current and charge voltages settings.
8.5.5. PV voltage too high
The PV voltage should always stay within the maximum rated limit of the solar charger, as indicated in its product name, type
plate and
Technical specifications
[65]. The solar charger can sustain damage based on the extent of the PV voltage height, and
it's important to note that such damage is not covered by warranty.
Should the PV voltage exceed the maximum rated PV voltage, the solar charger will cease charging, showing an overvoltage
error #33 with rapid blinking of the absorption and float LEDs. Charging resumes only when the PV voltage drops 5V below the
rated maximum voltage.
During investigations into high voltage issues, it's essential to review the VictronConnect app, solar charger display, or GX device
history. Check for the highest PV voltage recorded each day (Vmax) and past overvoltage warnings.
To avoid issues, check the open circuit voltage (Voc) rating of the PV array and ensure it is lower than the solar charger's
maximum rated voltage. Use the MPPT sizing calculator on the
solar charger product
page. For PV arrays in cold climates or with
night temperatures nearing or below 10°C, it's essential to consider possible increased output (more than its rated Voc). As a rule
of thumb, maintain an additional 10% safety margin.
VictronConnect app error #33 indication on the status screen and history screen.
8.5.6. Reverse PV polarity
When the solar charger is installed within the published specifications, internal protection guards the PV input against reverse PV
polarity, and no error is displayed in such cases.
Page 52
Troubleshooting
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