Lynx Distributor

9. Troubleshooting and Support

In this section:

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.

9.1. Cabling issues

Cables heat up

This can be caused by a wiring or connection issue. Check the following:

  • Check if all cable connections are tightened with a torque moment of 14Nm.

  • Check if all fuse connections are tightened with a torque moment of 14Nm.

  • Check if the surface area of the cable core is large enough for the current through that cable.

  • Check if all cable lugs have been crimped correctly and are tight enough.

Other cabling issues

For additional information about issues that can arise from bad or incorrect cabling, cable connections or wiring of battery banks refer to the Wiring Unlimited Book.

9.2. Fuse issues

For additional information about issues that can arise from incorrect fuse ratings or types refer to the Wiring Unlimited Book.

Red fuse LED on

This is caused by a blown or a missing fuse. It can also be caused by a malfunctioning fuse or if the fuse connections are loose. The Lynx Distributor measures the voltage over each fuse. As soon as it is more than 0.5V the fuse is marked as blown and if the voltage is less than 0.3V it is marked as ok.

  • In case of a blown or malfunction fuse – replace the fuse.

  • In case of a missing fuse because the circuit is unused -  place a dummy fuse in the unused fuse space.

  • In case of a loose connection - check if both fuse connections have been tightened with a torque moment of 14Nm.

Red fuse LED intermittent on

This is most likely caused by a loose fuse or a bad fuse. Refer to previous paragraph.

Fuse is missing in the VictronConnect list

Check the fuse name with the VictronConnect App. When the fuse name field is empty, the fuse will be disabled from monitoring and ignored.

Fuse blows as soon as a new fuse is installed

Check the DC circuit that is attached to the fuse for the following:

  • Check if there is a short circuit.

  • Check if there is a malfunctioning load.

  • Check if the current in the circuit is not larger than the fuse rating.  

Blown battery fuse not being detected straight away

When batteries are connected to multiple Lynx Distributor circuits and if one of the battery fuses blows, the fuse monitor will not measure a high enough voltage over the fuse to trigger a broken fuse alarm, until the battery is being charged or discharged.

Blown battery fuse not being detected

The fuse monitors in Lynx Distributor modules with older firmware (pre HQ1909) cannot detect a blown fuse when batteries are connected to multiple Lynx Distributor circuits.

9.3. Lynx Distributor operational issues

Does not power up (No LEDs)

The electronics that drive the fuse detection circuits and the Lynx Distributor receives its power from a Lynx Smart BMS or from a Lynx VE.Can via the RJ10 cable. When correctly powered up, the power LED should illuminate either green yellow or red. If no LEDs are illuminated at all check the following:

  • Check if the RJ10 cable is connected and if there is a Lynx Shunt VE.Can or a Lynx Smart BMS in the system.

  • In case of a Lynx Smart BMS it could also be that the Lynx Distributor has been depowered by the Lynx Smart BMS because of an empty battery or the Lynx Smart BMS remote on/off switch has been switched to off. For more information see the Lynx Smart BMS manual.

Yellow power LED

This happens when there is no voltage supplied to the positive busbar, but the Lynx Distributor is still receiving power via the RJ10 cable. A common cause is when the main fuse in the Lynx Shunt VE.Can or an external main fuse has blown.

Unable to communicate

Communication with the Lynx Distributor is only possible together with a Lynx Smart BMS. Connect with the VictronConnect App to the Lynx Smart BMS and check if the Lynx Distributor shows up on the app. Check the serial number of all Lynx Distributors, it needs to be HQ1909 and above for it to be able to communicate.

  • Check if all Lynx Distributors are powered, the power LED needs to be on.

  • Check the integrity of all RJ10 cables and check if they are all correctly plugged in.

  • Check how many Lynx Distributors are used. It is not possible to communicate with more than 4 Lynx Distributors at the same time.

  • Check the addressing of each Lynx Distributor and check if all the DIP switches have been set correctly. Each of the 4 Lynx Distributors will need a unique address. If multiple Lynx Distributors have the same address only one of them will show up. The others with the same address will be missing.

Lynx Distributor names not sequential

An addressing mistake has been made when setting the DIP switches.

The VictronConnect App “DISTRIB” list shows Distributor not in use

This can be because the Lynx Smart BMS has turned the Lynx Distributor off or the Lynx Distributor is not connected with the RJ10 cable.

Communication lost

This alarm is raised, if a Lynx Distributor was detected by the Lynx Smart BMS on power up but cannot see the Lynx Distributor anymore. The Lynx Smart BMS sends a message to all Lynx Distributors every 250ms and if the Lynx Distributor does not answer the communication lost alarm is raised. The most likely cause of this alarm is that the RJ10 cable has been disconnected.