Smart BatteryProtect error codes: E0–E8, P2 and P3

Internal fault — calibration data missing or corrupted.

What to do: contact your dealer. You cannot clear this fault yourself — the SBP must be replaced.

Originally: “Calibration failure” · Victron source

The short-circuit protection has tripped because of a short circuit, overload or excessive inrush current — for example when trying to power an inverter or inverter/charger directly.

After detecting a short circuit, the SBP tries to switch the loads on every 5 seconds; after two attempts it shows E1.

What to do:

• check that there is no short circuit in the circuit;
• make sure the current drawn by the loads does not exceed the SBP’s rated current;
• For loads with a high inrush current, switch them via their remote on/off input controlled by the SBP, rather than switching their DC supply on and off;
• check that the connections are not loose or high-resistance and that the cables have the correct cross-section.

Original: “Short circuit” · Victron source · short-circuit behaviour

Immediate action is needed to prevent the loads from disconnecting. The internal temperature is close to the limit — if it rises further, the overtemperature protection will trip (E2).

Original: “Over temperature warning” · Victron source

The protection tripped because the internal temperature was too high.

What to do:

• make sure the current drawn by the loads does not exceed the SBP’s rated current;
• check that the connections are not loose or high-resistance and that the cables have the correct cross-section;
• do not install the SBP in a place exposed to high temperatures or radiant heat — move it to a cooler location or provide additional active cooling.

Original: “Over temperature” · Victron source

Immediate action is needed to prevent the loads from disconnecting. If you do nothing, the undervoltage protection will trip after 90 seconds.

In mode A (buzzer or LED), a continuous alarm starts after 12 seconds of undervoltage; in mode B (relay), the alarm relay energises after 12 seconds.

Original: “Under voltage warning” · Victron source · operating modes

The protection tripped because the input voltage was below the selected undervoltage threshold for 90 seconds.

What to do:

• switch off or disconnect the loads and charge the battery;
• check that charging and the battery are working properly.

In mode A (buzzer or LED), the restart delay for the loads is 30 seconds. In Li-ion mode, the SBP undervoltage thresholds are inactive — the loads are disconnected by a signal from the BMS.

Original: “Under voltage” · Victron source · operating modes

The protection tripped because the input voltage exceeded 16 V (12 V system) or 32 V (24 V system). In Smart BatteryProtect 48 V, the threshold is 64 V.

What to do:

• check the configuration of all charging devices in the system — especially the system voltage and charging voltages;
• check that charging is working properly;
• check that the system voltage in the SBP is set correctly.

In the event of overvoltage, the SBP disconnects the loads immediately. In mode A, the intermittent alarm lasts until the overvoltage is cleared, and there is no restart delay; in mode B, the alarm output remains inactive.

Original: “Over voltage” · Smart BatteryProtect 12/24 V · Smart BatteryProtect 48 V · operating modes

Internal fault — configuration data missing or corrupted.

How to restore the SBP to operation:

• restore factory settings in VictronConnect: Settings → More options → Reset to defaults;
• disconnect all power and wait 3 minutes before reconnecting;
• configure the device again.

Original: “Configuration failure” · Victron source

Internal fault — reference voltage missing or corrupted.

What to do: contact your dealer. You cannot clear this fault yourself — the SBP must be replaced.

Original: “Reference voltage failure” · Victron source

The protection tripped because an external BMS told the SBP to disconnect and then reconnect the loads three times in a row — typically when the system shuts down because the cell voltage is too low.

After E7, the SBP remains off until the input voltage rises above 13 V (12 V system) or 26 V (24 V system) — according to section 4.4 of the manual for at least 30 seconds, which means the battery is being charged.

What to do:

• check the error codes or BMS log, determine the cause of the shutdown and fix it;
• switch off or disconnect the loads and charge the battery;
• check the wiring between the BMS and the SBP Remote terminal;
• check that the BMS is working properly.

The Smart BatteryProtect 48 V manual states the same thresholds for E7 (13 V and 26 V for 12 V and 24 V systems) — no threshold is given for 48 V.

Clears automaticallywhen the input voltage rises above 13 V (12 V system) or 26 V (24 V system).

Original: “BMS lockout” · Victron source · Li-ion mode · Smart BatteryProtect 48 V

The short-circuit protection has tripped because of a short circuit, overload or excessive inrush current — for example when trying to power an inverter or inverter/charger directly.

What to do:

• check that there is no short circuit in the circuit;
• make sure the current drawn by the loads does not exceed the BP rated current;
• for loads with a high inrush current, switch them via their remote on/off input controlled by the BP, rather than switching their DC supply on and off;
• check that the connections are not loose or high-resistance and that the cables have the correct cross-section.

Original: “Short circuit” · Victron source

The protection tripped because the internal temperature was too high.

What to do:

• make sure the current drawn by the loads does not exceed the BP rated current;
• check that the connections are not loose or high-resistance and that the cables have the correct cross-section;
• do not install the BP in a place exposed to high temperatures or radiant heat — move it to a cooler location or provide additional active cooling.

Original: “Over temperature” · Victron source

The protection tripped because the input voltage was below the selected undervoltage threshold for 90 seconds.

What to do:

• switch off or disconnect the loads and charge the battery;
• check that charging and the battery are working properly.

Original: “Under voltage” · Victron source

The protection tripped because the input voltage exceeded 16 V (12 V system) or 32 V (24 V system).

What to do:

• check the configuration of all charging devices in the system — especially the system voltage and charging voltages;
• check that charging is working properly;
• check that the system voltage in the BP is set correctly.

Original: “Over voltage” · Victron source