I have a 2018 Rad Mini and I get the "error 30 maintain" code. I watched the recommended video, checked all the connections and they were all good.
I purchased and installed a new controller from Rad but I still get the "error 30 maintain" code.
I re-checked all the connections and they are tight.
How do I fix this problem?
Are you holding the brake lever closed while powering up? Try not doing that as this can cause the error code as the brake lever has a motor cutout that could be causing the error.
I don't touch anything on the bike other than turn the mode button on, everything powers up and after a few seconds the message comes up "error 30 maintain".