question

terror-storm avatar image
terror-storm asked

Error code: #67 - No BMS, Inverter turns off

Hello,


We have an RV with a Lithionics 48V RV-C lithium battery & BMS (fw v9.0.02), Cerbo GX (fw v2.94), Multiplus II 3kW (fw 492), SmartSolar 150/35 (fw v1.61).

Periodically the system experiences an error with these symptoms:

  • The MPPT appears to lose communication with the battery
    • It changes from Ext. Control to Float, and produces code #67
  • The inverter AC output turns off
    • The VE.Bus state changes from Inverting to Off

It seems to only occur during the times 7am - 9pm, never after 9p or before 7a. Perhaps it has to do with the solar cycle? In my mind this is not likely a wiring issue, since it doesn't occur overnight.

The issue has always been rectified automatically in a short period of time (1s to 1m, 41s).

See table below for instances of the error, and snips from VRM showing the other symptoms.


Any insight is welcome and appreciated. Thank you!


1681993412084.png

1681993430407.png

1681993455548.png

1681993475553.png

Device Triggered by Description Started at Cleared after

Solar Charger - Solar PV array [279]

Automatic monitoring

Error code: #67 - No BMS

4/19/2023 13:27

 19s

Solar Charger - Solar PV array [279]

Automatic monitoring

Error code: #67 - No BMS

4/18/2023 18:18

 11s

Solar Charger - Solar PV array [279]

Automatic monitoring

Error code: #67 - No BMS

4/16/2023 9:50

 1m, 3s

Solar Charger - Solar PV array [279]

Automatic monitoring

Error code: #67 - No BMS

4/15/2023 14:42

 55s

Solar Charger - Solar PV array [279]

Automatic monitoring

Error code: #67 - No BMS

4/15/2023 13:52

 1m, 5s

Solar Charger - Solar PV array [279]

Automatic monitoring

Error code: #67 - No BMS

4/14/2023 16:39

 50s

Solar Charger - Solar PV array [279]

Automatic monitoring

Error code: #67 - No BMS

4/13/2023 18:07

 1m, 6s

Solar Charger - Solar PV array [279]

Automatic monitoring

Error code: #67 - No BMS

4/9/2023 7:14

 59s

Solar Charger - Solar PV array [279]

Automatic monitoring

Error code: #67 - No BMS

4/8/2023 12:15

 56s

Solar Charger - Solar PV array [279]

Automatic monitoring

Error code: #67 - No BMS

4/6/2023 16:46

 1m, 41s

Solar Charger - Solar PV array [279]

Automatic monitoring

Error code: #67 - No BMS

4/6/2023 15:32

 59s

Solar Charger - Solar PV array [279]

Automatic monitoring

Error code: #67 - No BMS

4/4/2023 8:08

 1s

Solar Charger - Solar PV array [279]

Automatic monitoring

Error code: #67 - No BMS

3/28/2023 13:23

 3s

Solar Charger - Solar PV array [279]

Automatic monitoring

Error code: #67 - No BMS

3/27/2023 17:13

 11s

Solar Charger - Solar PV array [279]

Automatic monitoring

Error code: #67 - No BMS

3/23/2023 12:20

 47s

Solar Charger - Solar PV array [279]

Automatic monitoring

Error code: #67 - No BMS

3/1/2023 17:07

 1m, 6s

Solar Charger - Solar PV array [279]

Automatic monitoring

Error code: #67 - No BMS

2/28/2023 16:16

 1s

Solar Charger - Solar PV array [279]

Automatic monitoring

Error code: #67 - No BMS

2/26/2023 13:09

 28s

Solar Charger - Solar PV array [279]

Automatic monitoring

Error code: #67 - No BMS

2/25/2023 16:12

 23s

Solar Charger - Solar PV array [279]

Automatic monitoring

Error code: #67 - No BMS

2/20/2023 9:48

 46s

Solar Charger - Solar PV array [279]

Automatic monitoring

Error code: #67 - No BMS

2/19/2023 15:41

 27s

Solar Charger - Solar PV array [279]

Automatic monitoring

Error code: #67 - No BMS

2/18/2023 17:28

 53s

Solar Charger - Solar PV array [279]

Automatic monitoring

Error code: #67 - No BMS

2/18/2023 16:39

 22s

Solar Charger - Solar PV array [279]

Automatic monitoring

Error code: #67 - No BMS

2/17/2023 15:36

 18s

Solar Charger - Solar PV array [279]

Automatic monitoring

Error code: #67 - No BMS

2/17/2023 14:23

 17s

Solar Charger - Solar PV array [279]

Automatic monitoring

Error code: #67 - No BMS

2/16/2023 17:53

 1m, 2s

Solar Charger - Solar PV array [279]

Automatic monitoring

Error code: #67 - No BMS

2/13/2023 19:09

 58s

Solar Charger - Solar PV array [279]

Automatic monitoring

Error code: #67 - No BMS

2/13/2023 10:59

 1m, 2s

Solar Charger - Solar PV array [279]

Automatic monitoring

Error code: #67 - No BMS

2/12/2023 13:42

 55s

Solar Charger - Solar PV array [279]

Automatic monitoring

Error code: #67 - No BMS

2/7/2023 10:26

 49s

Solar Charger - Solar PV array [279]

Automatic monitoring

Error code: #67 - No BMS

2/6/2023 10:22

 53s

Solar Charger - Solar PV array [279]

Automatic monitoring

Error code: #67 - No BMS

2/5/2023 15:36

 51s
Multiplus-IIcerbo gxLithium Batterysmart solar charging behaviour
1681993412084.png (5.3 KiB)
1681993430407.png (31.0 KiB)
1681993455548.png (14.6 KiB)
1681993475553.png (18.0 KiB)
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2 Answers
derrick thomas avatar image
derrick thomas answered ·

Loss of communication to bms. Are you using a victron data cable between the bms and cerbo? Some aftermarket and diy data cables can be problematic.

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terror-storm avatar image terror-storm commented ·

The Cerbo and BMS are connected to the overall RV-C network along with other devices. We are using an Ethernet cable for the Cerbo to interface into the network (with the end modified to connect to CAN), a cable from the BMS to the network (also modified), and a few UTP cables and connectors between the two.

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Alexandra avatar image
Alexandra answered ·

@terror_storm

If it is happening during solar hours then maybe revise the voltages a bit. Maybe it is tripping and switching off. Hence the loss of comms.

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