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Solar SMA Problem
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<blockquote data-quote="roys" data-source="post: 412431" data-attributes="member: 5044"><p>Looked up the fault on SMA site and it linked to a youtube tech video for that fault,, they showed you disconnecting the DC tails and the inverter checking each tail to earth with meter on DC and it should drop to zero, so I did that test started of at 26 ish V and dropped to 4.3V in about 10 seconds.</p><p></p><p>Think it is curtains for the inverter, took the cover of can't see anything resettable. Time to get onto SMA.</p><p></p><p>Can't work out the bad earth path thing as the panels are isolated from earth along with the cable run so is the monitoring system in the inverter doing something else clever to sense the bad connection? As I said earlier I did find a DC connection with a slight bit of surface corrosion on the roof.</p></blockquote><p></p>
[QUOTE="roys, post: 412431, member: 5044"] Looked up the fault on SMA site and it linked to a youtube tech video for that fault,, they showed you disconnecting the DC tails and the inverter checking each tail to earth with meter on DC and it should drop to zero, so I did that test started of at 26 ish V and dropped to 4.3V in about 10 seconds. Think it is curtains for the inverter, took the cover of can't see anything resettable. Time to get onto SMA. Can't work out the bad earth path thing as the panels are isolated from earth along with the cable run so is the monitoring system in the inverter doing something else clever to sense the bad connection? As I said earlier I did find a DC connection with a slight bit of surface corrosion on the roof. [/QUOTE]
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