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I have a new (3 weeks old) installation with a MPPT RS 450/100 (firmware v1.09) and (2) serial strings of (8) 415W panels, 10.3A (Impp), 48.2V (Voc) that are intermittent turning off charging on both trackers during bulk and absorption multiple times a day. There are no errors. I'm driving to the maximum of 5760W but want the extra headroom for winter months. Everything is working great otherwise. Is this expected behavior or does my unit have a problem?
Hi @Brian Brown I've sent you an email, we'd like to exchange the unit so we can research this one that is giving you trouble.
i have this same problem at my MPPT RS 450/100 too! Could you please assist.
Hi @Daniël Boekel (Victron Energy Staff). My replacement MPPT RS 450/100 is doing the same thing as the original failed unit. Has the research group determined the cause and a fix for this yet? Upgrading to firmware v1.10 may have reduced the dropouts but hasn't eliminated them. I can go for days with no dropouts, other days I can get 3 dropouts. Solar conditions and inverter load don't seem to have an effect on what is causing the dropouts. The BMS's in my batteries aren't showing any errors either. Sometimes only the charger relay opens, both most of the times both the mppt state and the charger sate turn off momentarily. My last unit ultimately hard failed with an error #200 just like @dennis. My biggest concern is that this unit will hard fail again. I can't afford to have that happen. Thanks.
@Daniël Boekel (Victron Energy Staff) : thanks a lot for this fast reply. Hope the dealer can regulate it fast ;-) sun is coming
Hello everyone,
Im having a similar trouble with an RS 450/100. This one is working with 2 different arrays, one 385VDC and the other one in 128VDC. It worked perfectly fine for about 6 months, but now, witthout any reason, it starts to turned off and stops producing. In two occation we reset it by taking out all sources, but now it doesnt respond anymore,
any ideas,
thanks a lot for your help.
