Thank you for the further assistance regarding charge control.
My Airmaax, mfg by Electromaax has a:
Please forgive my lack of electronic savvy, but here is my best interpretation of how this particular manufacturer-supplied controller seems to operate...
I believe you already know this stuff, but I will state my understanding so you know where a beginner like myself stands regarding dump load resistors and charge controllers.
It senses voltage, and when appropriate, it switches on the mechanical propeller
Since the brake is worn out, the controller becomes cooking
hot, even with the built-in thermostatically controlled cooling
fan spinning like a... it spins really fast and loud.
That begs the question: does this particular controller have the ability to dump to an external dump?
The electromaax website shows wonderful and complete information on this controller, never mentioning an external dumping ability.
I will search as you suggest and locate a new controller.
Thanks again, Hakalau