backchannel: sir, yes sir

from this post:

That was my first charge controller many many years ago. Get rid of it.

Any other commands you’d like us to obey?

It is a shunt "on, off" device that should be replaced by a good quality PWM or MPPT controller.

Shunt controllers aren’t necessarily bad.  They certainly don’t order strangers around.

A configurable shunt controller can be better than a nonconfigurable PWM, at a fraction of the price.

Change the charge controller.