There is a bug in Solar Charger node in Node Red.
The node is configured to read Relay state from Smart Solar 250/80 TR VE.Can - only changes.
Relay on mppt is configured to “Day detection (panels irradiated)” mode.
The node should send 0 or 1 in related conditions, but sometimes it sends null.
It happens at least once a day with any connection to real panels irradiation.
Now I am on Venus 3.70 ~60. The same issue was also noticed in all 3.6X as I remember.
Before 3.6 the same flow was working like a charm.
I attached a picture with all required information and debug log.
P.S. I couldn’t find the cause of the errors in my flow for a long time, and today it happens!
Sure I have filtered this null in my flow but buggy node with unexpected message content is not so good deal.