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Image CaptionHey so weird problem here. Came back to the boat and noticed one of my 545w panels isn't producing. I Disconnected the MC4 at the panel side checked with a voltage meter im getting 33.5v. Went to the MPPT checked the PV side and its Showing 13.26. I Disconnected the PV wires at the MPPT. Checked the voltage and showing 33.5v but when I connect it again to the MPPT it's showing 13.26. Is the MPPT fried you think?
@MAXTOSEA Is the MPPT fried you think?
It is best to check out your PV panel and cabling to the mppt first.
The MOST likely cause for the PV voltage to match the battery voltage is that there is a bad PV panel, or more likely a high resistance joint / connector / fuse between the panel and mppt. A bad panel or cabling will inhibit current flow, and the mppt pv voltage will be low.
Via Victron connect, disable the charger. Does the reported / measured voltage (at mppt pv terminal) go up to panel Voc?
Do you have resettable breakers between the MPPT and battery like the ones shown, these have a reputation for generating high voltage drop due to poor contacts.
