good info here,, My 15K has a similar issue... random kick breaker.. I lubed fan bearings last season as that helped that issue..
I replaced the start Cap and relay etc. Also did the run cap..
My issue is the compressor,, or the thermostat,, on a HOT HOT day it runs constant and does not cycle.. pulls from 14.7-16.2 amps depends on roof temps..
Now on days not that hot and compressor restarts alot, it trips,, basically locks from pressure.. It has stalled genny, then on shore it humms then either trips or starts slow,, I can turn thermo down and it ,, wait 5 min and turn up and it may start fine 4 out 5 times it trip..
In my case a new AC is my plan,... can really service these unless you have a buddy who works for beer..
GOODLUCK.. Start capacitor may help or a hot start.. soft start is pricey but if used as bandaide,,,, ???