I did a stupid thing and I completley overlooked the voltage limit on this controller while expanding the PV array on a boat installation. I should have wired the 2 new panels in parallel to the existing panels but instead I placed them all in series.
Open circuit voltage was about 155V or so. When I connected to the controller, it was working for a while and the app reported only about 43V PV input which was a bit odd, but then the controller stopped working and all the lights turned off.
Now ive read somewhere that these units will go into a shutdown mode and need to be left off for at least 3 mins, i need to go back to check this as its been off a few days now.
Looking at things, I likely will benefit from a larger controller anyway as this unit is only 50A and I will need something closer to 60+A to get the maximum output from the upgraded array which will be around 1600W total, but if this unit is not toast, this is still a bonus.
Hi. Use the Victron MPPT calculator on the website. It is very useful and you can either select from the list of modules they have or insert the variables of the one you have if not listed. This will direct you the correct charge controller. MPPT Calculator - Victron Energy
With 155V there is a high chance that you killed the MPPT.
That is NOT covered under warranty!
Yeah, im not sure about the type of safeguards built into these, but ive seen this happen on other brands and they simply shut down and wont start again until disconnected, either way, i will need to upgrade the controller to a bigger unit.