VPS-DOS-TR-06-E / Rev 01
3-May-2022
Volta Power Systems
Page 19 of 41
RESETTING FAULTS AND SYSTEM EMPTY FAULTS
How to Reset a Fault
When the SOC gauge is slowly blinking red, a system fault is present. To attempt
to reset any fault, press the On/Off pushbutton to turn off the Volta System, wait
30 seconds, then press the On/Off button again.
If the fault does not clear, and the pack is above 0% on the SOC gauge, there is a
fault that will need to be checked by a certified technician. Contact the vehicle
OEM, Dealership, or other Volta approved technician.
How to Reset from System Empty Fault
The Battery Management System shuts down the Volta System if the pack
reaches a very low voltage limit or 0% State-of-Charge (SOC). When the Volta
System reaches 0% SOC, the SOC gauge slowly flashes red and the needle will
be at 0%. Do not attempt to turn on the system until a charge source is connect-
ed.
To reset your system after a system empty fault:
1. Turn off the vehicle and disconnect shore power.
2. Press the On/Off button to turn off the Volta System, if not off already.
3. Wait 30 seconds, then press the On/Off button to turn the Volta System
on.
4. Within 120 seconds, connect a charging source: Connect your vehicle to
shore power or start the vehicle and run at the high idle setpoint.
NOTE: If the battery system does not sense incoming power within 120
seconds from being re-awakened, it will go back to sleep. Restart the
procedure if this occurs.
5. If charging via shore power, ensure the appropriate charge rate is
selected via the Touchscreen or the Inverter Control Panel. Refer to
Inverter Screen on page 28 or Max Branch Amps (Charger Current
Limit) Setting on page 22 for details on changing the charge rate
selection.
6. Charge the system to a SOC of greater than 20% before turning off the
system, unplugging from shore power, or turning off the vehicle.
If a system reset is successful, and the system empty fault is corrected, the SOC
gauge will be solid red (not flashing). If this reset does not correct the System
Empty Fault, please contact the vehicle OEM, Dealership, or other Volta ap-
proved technician.
Perform the recovery procedure as soon as possible. Failure to recover from a
low voltage shutdown will result in further pack discharge, which may require
service from a Volta technician.
Consider the Energy Storage Pack temperature when recovering from zero SOC.
The Volta System will not charge if the Energy Storage Pack is too cold. Refer to
Cold Temperature Operation on page 31 for additional details and strate-
gies.
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