7. Warnings, alarms and errors
7.1. E-SL1: Balancer failure
Tip
Contact your dealer or distributor to resolve this situation.
7.2. W-SL11: Under voltage warning (pre-alarm)
The voltage of one or more cells is becoming too low and has dropped below the pre-alarm setting.
Tip
To remedy this warning, recharge the battery as soon as possible.
7.3. A-SL9 Over voltage alarm
The voltage of one or more cells has become too high.
Tip
Immediately disable all chargers and contact the system installer to check that all chargers are properly controlled by the “charge disconnect” contact on the BMS. When properly controlled, a high voltage situation is not possible, as the BMS disconnects all chargers well before raising the high voltage alarm.
7.4. A-SL11: Under voltage alarm
The voltage of one or more cells is below the configured Allow-To-Discharge cell voltage and discharging has been disabled
Tip
To remedy this warning, recharge the battery as soon as possible.
7.5. A-SL15: Over temperature alarm
The battery has reached its high-temperature threshold and charging is disabled.
Tip
Provide adequate ventilation and make sure there is enough space around the battery. Reduce charging current and/or loads.
7.6. A-SL22: Under temperature alarm
The battery has reached its low-temperature threshold and charging is disabled.
Tip
As soon as the temperature rises above the set threshold, the charging process will continue.
7.7. E-SL2: Internal communitation failure
Tip
Contact your dealer or distributor to resolve this situation.
7.8. E-SL9: Overlapped voltage error
Tip
Contact your dealer or distributor to resolve this situation.
7.9. E-SL10: Balancer update error
Tip
Contact your dealer or distributor to resolve this situation.
7.10. E-SL24: Hardware failure
This error is generated in the following circumstances:
One (or more) cells are very deeply discharged or defective.
Tip
Check the battery terminal voltage. If the battery terminal voltage is too low, refer to the Battery very low terminal voltage chapter on what to do next.
The internal circuit board has a hardware fault.
Tip
To resolve this, contact your Victron Energy dealer or distributor.
Note
To resolve a "hardware failure" error, always first refer to the Troubleshooting & support chapter of this manual before contacting your Victron Energy dealer or distributor. This is to rule out the first two possible causes of this error. Do not just assume that a hardware failure causes the error.
7.11. E-SL119: Settings data lost
The settings data in the battery memory has been lost.
Tip
To remedy this, go to the settings page and reset settings to factory defaults.
If this error is not resolved after a settings reset, contact your Victron Energy dealer or distributor and ask for this issue to be escalated to Victron Energy, as this error should never happen. Please include the battery's serial number and firmware version.