When you are doing your own solar system, the key words here are “doing your own”, you will have to be in charge of troubleshooting if things go wrong.
Sometimes, often you can recognize there is a problem but can’t quite figure out what or where the problem is. You test each separate component and each of them seems to be working, but altogether there is a problem somewhere and it’s frustrating.
I am the unofficial “Geek Squad” tech person in my neighborhood, I can’t tell you how many times I have been working on a computer, taking everything apart, putting it back together and have it work, and I have no idea what I did to make it work, the same thing happens with solar systems. Perhaps it was just a loose connection, or who knows what, call it a happy accident.
I recommend building your system yourself rather than paying someone to do it, mainly because you will have a better understanding of how things go together, the hows and whys. The only exception I can think of is if you have the money to pay someone to come out and fix things each and every time things go wrong, of course then you are at the mercy of someone elses time schedule. There is nothing better than being able to do it yourself.
Watch this video about troubleshooting a solar system.
https://youtu.be/7zOodG3F_Ds