Xantrex GT3.3 occasional "insufficient solar energy" on startup

suntan901

I was wondering if any Xantrex GT series users have experienced "insufficient solar energy" on startup, when the day before (and the day following) the inverter starts perfectly. Same sky illumination, same temperature, same everything. Some days it starts, some days it doesn't. Sounds like a bad capacitor. Unit is 11 years old. 

BB.

Roughly, has the peak power (like 2,800 watts) been the same in the middle of the day?

If not, you may have poor wiring connections.

If the peak is 50 % or less of normal / typical, you may have bad panels.

Otherwise, could be a bad inverter.

I had bad panels (50% of normal power] , but my 3.3 gt xantrex inverter did always start.

-Bill

suntan901

Yes, peak power mid-day is always the same, subject to sky condition, of course. Also, I wrote down power out versus time of day on a "good" day, and subsequent "good" days match closely at the same time of day. I think it is a good idea to check internal connections, like between the AC and DC in/out panel and the actual inverter circuit board. Gonna do that, thanks. 

suntan901

Checked connections. Still same "insufficient solar energy" some days. Need a schematic to devise a manual start button. Anybody have a service manual or diagram? Should be simple to fix with a diagram.