Our problem is the following:
There is a warning that W-B06: Load will disconnect and shortly after A-B06: Load disconnected
Lynx BMS 500 shuts down and signals an error. It clicks, bluetooth flashes and the status light flashes red 2 times pause and then 2 more times and so it continues. It shows ATC/ATD Failure.
Lynx BMS shuts down and the relay stands and clicks. The refrigerator beeps and the panel for the living area stops working.
Our plan is to go to Spain in three days, so understand that the panic is great.
Can someone explain in a simple way how we can go about solving our problem?
Just a quick question about the BMS… it’s a Lynx Smart BMS 500 NG, isn’t it?
Does the fault always occur immediately after switching the system back on, or after a certain amount of time?
Have you fitted any other components to the system, for example an Orion charger connected to the alternator, etc.?
Was the system installed as it is, or did you fit the components yourselves?
It’s an ‘Allowed to Charge’ error, followed by an ‘Allowed to Discharge’ error.
So it could be something to do with the battery itself… A cell voltage that’s too high or too low, or a temperature sensor.
Does the error also occur when the engine is running and the MPPT isn’t charging in the evening due to insufficient sunlight?
The relay setting is ‘Alternator ATC’… so it seems there’s nothing else fitted?
@Joyride-Rapido The voltage is pretty high. Where is the charging coming from?
At that voltage the BMS should disable all charging sources and if charging continues it will open it’s contactor to protect the batteries.
Switch to the “battery” tab and look at the cell voltages.
I can not add anything to the above post. However, one pertinent question is how come the voltage is 14.56V, charging properly controlled by the Lynx BMS should be limited to 14.2V and if you have a high cell voltage then the BMS reduces charge voltage. But then it is a Frankenstein system with a Renogy inverter that can not be controlled via DVCC. Is this also an inverter/charger, if so make sure it is set for 14.2V absorption and see if it has a remote port to control it. Renogy lithium profile is likely to have too high a voltage for Victron NG batteries.
Its accur after a certain amount of time. Its even happend when the engine is running.
A Vehicle electrician installed the components. Previously there were 2 agm batteries, which were replaced by a Victron 300ah NG. The four battery cells have exactly the same value.
I have changed from agm to lithium lifepo4 in the smartsolar app. The Lynxapp shows the batteribank is ok and balanced.
It would be interesting to know whether the charging voltages have been adjusted for the new battery. Does the MPPT communicate with the system? What is the charging voltage setting?
How is engine charging controlled, have you had a DC to DC charger added or have you had an external controller fitted to the alternator or do you have direct charging from the alternator to the battery. Direct alternator charging is not very good as alternators often run at too high a voltage, 14.5-14.6V at highest, but could also reduce to 13.0V if it is a Euro 6 smart alternator.
