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Victron Lynx Smart BMS 500 Manual

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10. Troubleshooting and Support
Consult this chapter in case of unexpected behaviour or if you suspect a product fault.
The correct troubleshooting and support process is to first consult the common issues as described in this chapter.
Should this fail to resolve the issue, contact the point of purchase for technical support. If the point of purchase is unknown, refer
to the Victron Energy Support webpage.
10.1. Lynx Smart BMS does not power up
This can be caused by one of the following reasons:
No battery supply
No LEDs are illuminated on the Lynx Smart BMS. Check the battery supply voltage into the Lynx Smart BMS. Check cables and
fuses on the battery side. It could also be that the Lynx Smart BMS is in hibernation mode. For more info on that see paragraph
Powering up [21].
Reverse battery supply
Check the polarity of the supply voltage into the Lynx Smart BMS. If reverse polarity, correct polarity mistake. Unit should now
power up.
Remote on/off switched off or wire loop missing
The remote on/off switch needs to be turned on (or the wire loop is placed in the remote on/off connections).
Battery voltage issues
The Lynx Smart BMS, on first install will auto detect the battery voltage. It will be set to either 12V, 24V or 48V. Each set voltage
has a specific battery voltage range (threshold). If the Lynx Smart BMS measures a voltage that is outside this thresholds one of
these alarms will be generated:
• Probably wrong system voltage - the red LED flashing 7 times every 4 seconds.
This is generated when the system voltage cannot be determined or when the DC system voltage is much higher than the set
system voltage.
• Battery voltage not allowed - the red LED flashing 14 times every 4 seconds.
To fix, check the battery settings or check the battery voltage.
This table indicates the voltage thresholds for each system voltage:
System voltage Voltage threshold
12V Between 9V and 15V
24V Between 16V and 30V
48V Between 32V and 60V
Pre-charge errors
The Lynx Smart BMS pre-charges the connected load. Once pre-charge is complete, the contactor is closed and the Lynx Smart
BMS is operational. There are two specific error that can be generated during the pre-charge process:
• Pre-charge high current – the red LED flashing 6 times every 4 seconds. The pre-charged energy or current has been
exceeded.
• Pre-charge timeout – the red LED flashing 5 times every 4 seconds. It has taken too long for the pre-charge process to
complete.
Pre-charge faults are mostly caused by:
• A short circuit on the load output – potentially caused by a malfunctioning load or if there is a wiring issue like a short circuit.
• Loads with a too high capacitance or too low resistance (less than 20 Ohm) have been connected to the load output.
To remedy these faults, switch off, or remove some loads or chargers and rule out wiring issues or short circuits.
Internal error
Contact your Victron supplier if one of the following errors are occurring:
• Internal supply error - Red LED flashing 12 times every 4 seconds
• Initialization error - Red LED flashing 9 times every 4 seconds
Lynx Smart BMS
Page 29 Troubleshooting and Support
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