The Multi RS Solar has an LCD screen that displays operational information.
Inverter state: This shows when the Multi RS Solar is inverting. Power output, Frequency, and AC voltage. |  |
AC input state: This shows when the state of the AC input. Power output, Frequency, and AC voltage are shown. The bottom line shows the status of the AC input relay. |  |
Battery:
Battery Power (charging shows positive number, discharging shows negative number), Current, DC voltage, Temperature (*), State-of-charge (*) and Time-to-go (*). Battery state (e.g. discharging, bulk, absorption, float, etc).
Battery state: The second line of the display shows when the status of the battery, as measured at the battery terminals of the Multi RS Solar itself. These values don't account for other charge sources or loads in the wider system. Battery power, battery voltage and current. The third line of the display shows the battery temperature and state of charge. These values may come from the system battery monitor if available. |  |
Negative values indicate battery discharge. The bottom line shows a battery status of "Discharging". |  |
Solar:
The solar power, voltage and current are shown on the second line. There is a separate page for each MPPT tracker. The daily yield and the total yield are also displayed. |  |
If you have an AC PV inverter connected, then its power and yield will be displayed. |  |
In the top right of the display are other system information icons.
 | Communicating on any interface (e.g., Bluetooth, VE.Can, etc.) |
 | Bluetooth Enabled, Icon colour changes when connected |
 | MPPT Active |
 | (Blinking) Error or Warning |
 | Inverter Active |
 | Battery, fill corresponds with voltage, blinks when empty |
Some loads like motors or pumps draw large inrush currents during start-up. In such circumstances, it is possible that the start-up current exceeds the over current limit of the inverter. In this case the output voltage will quickly decrease to limit the output current of the inverter. If the over current limit is continuously exceeded, the inverter will shut down for 30 seconds and then automatically restart. After three restarts followed by overload within 30 seconds of restarting, the inverter will shut down and remain off. To restart normal operation, disconnect the load, Switch Off the inverter, then switch it On.
The inverter will shut down when the DC input voltage drops below the low battery shutdown level. After a minimum shutdown time of 30 seconds, the inverter will restart if the voltage has risen above the low battery restart level.
After three shut down and restarts, followed by a low battery shutdown within 30 seconds of restarting, the inverter will shut down and stop retrying based on the low battery restart level. To override this and restart the inverter, switch it Off, and then On, and limit loads to enable recharging of the battery with solar energy.
See the Technical Data table for default low battery shut down, restart and charge detect levels. They can be adjusted with VictronConnect (computer or app).
Additionally another external MPPT or battery charger can also be used to recharge the battery to reach the Restart Voltage or Charge Detect voltage level. !!! If using the allow to charge signal functionality, it must remain above the minimum voltage, so if the battery is completely dead it will not allow charging to start. In this case, you can temporarily disable this function in VictronConnect to allow charging to resume, then enable it again.
See the Technical Data table for default low battery shut down and restart levels. They can be changed with VictronConnect (computer or app). Alternatively Dynamic Cut-off can be implemented, see https://www.victronenergy.com/live/ve.direct:phoenix-inverters-dynamic-cutoff
Reduce DC input voltage and/or check for a faulty battery- or solar-charger in the system. After shutting down due to a high battery voltage, the unit will first wait 30 seconds and then retry operation as soon as the battery voltage has dropped to acceptable level.
A high ambient temperature or enduring high load may result in shut down to over temperature. The inverter will restart after 30 seconds. The inverter will continue to try and resume operation, and will not stay off after multiple retries. Reduce load and/or move inverter to better ventilated area.