Error Code Overview; Error 1 - Battery Temperature Too High; Error 2 - Battery Voltage Too High; Error 17 - Solar Charger Overheated Despite Reduced Output Current - Victron energy SmartSolar MPPT 100/30 Manual

MPPT solar charger manual

8.11. Error code overview

The error codes in the following subchapters are potentially displayed in the VictronConnect app, on a remote display or a
connected GX device. For the most up-to-date error overview, see this link: https://www.victronenergy.com/live/mppt-error-codes.
Furthermore, the solar charger utilises specific LED indications to signal particular errors. For an overview of these LED codes,
please refer to the Victron Toolkit app.

8.11.1. Error 1 - Battery temperature too high

This error will auto-reset after the battery temperature has dropped. The solar charger will stop charging to prevent damaging the
battery. The battery temperature can be received by an external sensor (like Smart Battery Sense or BMV) or measured by the
charger when this feature is available.

8.11.2. Error 2 - Battery voltage too high

This error will auto-reset after the battery voltage has dropped. This error can be due to other charging equipment connected to
the battery or a fault in the solar charger.
This error can also occur if the battery voltage (12, 24, 48V) is set to a lower voltage than the connected battery.

8.11.3. Error 17 - Solar charger overheated despite reduced output current

This error will auto-reset after the solar charger has cooled down. Check the ambient temperature and check for obstructions near
the heat sink.

8.11.4. Error 18 - Solar charger over-current

This error will auto-reset. If the error does not auto-reset, disconnect the solar charger from all power sources, wait 3 minutes,
and reconnect so it will power up again.
Possible causes for an over-current on the battery terminals:
• Switching on/off a very large load on the battery side.
• Sudden change in irradiance is causing a temporary over-power in the solar charger.
• Overload of the inverter ac output.
Possible solutions:
• If possible, provide adequate cooling for the unit. A cooler unit can handle more current.
• Reduce the load on the inverter.
• Charge the battery before using the inverter. At higher battery voltages, the same amount of power requires less current.

8.11.5. Error 20 - Maximum bulk time exceeded

The maximum bulk time protection was a feature when the solar chargers were newly released in 2015 (or prior). This feature has
now been removed.
If you see this error, update the solar charger to the latest firmware. If, after the update, you still see this error, then perform a
"reset to factory defaults" and then reconfigure the solar charger.

8.11.6. Error 21 - Current sensor issue

If you see this error, update the solar charger to the latest firmware. If, after the update, you still see this error, then perform a
"reset to factory defaults" and then reconfigure the solar charger.
Disconnect all wires and then reconnect all wires to force the solar charger to restart. Also, make sure the minus on the solar
charger (PV negative and battery negative) is not bypassing the solar charger.
This error will not auto-reset.
If the error remains, please contact your dealer or distributor, as there might be a hardware defect.

8.11.7. Error 26 - Terminal overheated

Power terminals overheated, check the wiring, including the wiring type and type of strands, and/or fasten bolts if possible.
This error will auto-reset.
Page 57 Troubleshooting