Morning all, please assist. I have an older model Multiplus unit as above which does not switch over to charger anymore while on 220 volt ( South Africa). It is used in my Campervan. It seems to try but defaults to “Alarm”. I have been quoted some tidy sum of money to 1st do a reprogram, and if still not working to give me an assessment to repair, .. also a tidy sum.
I am wondering if I can download some software from the net and do my own reprogramming under supervision?..
Beside that however, I would be very keen to understand what could be the problem. I have removed the covers from the unit and taken photographs of the inside only to find everything looks fine / no burn etc…
If you have a picture of the onboard chip and the serial number (just the first 4 or 5 letter/numbers) we can help further to let you know if it can be updated
Excellent you have the 26 processor. So it is able to be updated to the latest firmware.
If you are past 2603430 (firmware 430) you can do it youself with the mk3 adaptor and victron connect. I am hoping the previous owner did at least one or two updates.
Otherwise you will need to do it old school with ve flash.