Hi all,
I recently noticed that the negative terminal (On the PV side) of my Smart MPPT Solar charge controller 150v/100A burned out (most likely because of bad wire connection) I noticed the burn out started from the wiring (The wires were partially burnt and corroded).
I noticed this when I was moving between houses, I did not notice any drop in harvest or productivity (I would easily notice a drop in productivity since I have actively monitor my solar production on a daily and I have realtime logs extracted every 10sec and stored.
The system is 24v with 3000w panels. The system is grid interactive and a such the grid comes up at night while solar works during the day. On an average, the system peaks at about 70 to 80A / 24v during charge cycles and that has not changed.
My concern though is that the charge efficiency of the controller has been compromised due to the burnt out terminal. I have no doubt that it has introduced resistance to the charging process which I believe would only get worse.
I have since ordered for a replacement and the plan is to have this relegated for secondary use.
My question is this. Can this unit be repaired? Is the terminal replaceable? This is a very expensive device and it would be a shame to condemn it totally because of a burnt out terminal.
I purchased the device from an authorized victron deal in my country so I am hoping that they might be able to fix it back as new.
I have attached the picture of the terminal
