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Troubleshoot solar circuit? SMA Sunny Boy no lights

Mhoward84

New Member
Joined
Feb 20, 2021
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32
Hi everyone, my power company just put in the meter socket finally so I am able to turn on my inverter. I turned on all breakers and the fan to the sunny boy turns on but there are no lights on the display. I verified the display is plugged in.

I think I got all my circuits wired correctly but how do I troubleshoot them with rapid shutdown devices on the panels? I tried doing a continuity test with my multimeter but get no sound. Am I supposed to get continuity on the + and - of a rapid shutdown circuit? Thanks for any help!
 
Just an update. I called SMA and apparently there is a SECOND ribbon cable on the top that needs to be plugged in. After plugging in it fired right up.

I am still curious on how to diagnose a rapid shutdown circuit and will start a separate thread for that.
 
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