RED LED of Death?

I have a red "!" on my Y1 axes. A reset seems to get rid of it, but wondering if something is going to burn out soon???
This started to happen shortly after increasing the current just a tiny bit via the trim pots. I might have rotated the POT maybe 1 to 2 degrees.
Of course if I don't notice it when I start up, only one motor turns on the Y and now I have to re-square the machine.
I looked in the manual (truthfully not that hard, so probably missed it) but didn't see any reference to this.
Thanks

EDIT: Oh and I also started using the IOT switching relay if that matters

 

UPDATE:

Found the info in the manual.
Motors are warm but no hot. I adjusted limits back down like they were - Red LED came on for the next 3 boots. 4th attempt the LED stayed off.

I'm worried this will happen during a cut and Y2 axes will keep on driving and twist my fame so bad I will need to replace it. Anything I can check on the motor end?

 

Yeah I figured it didn't measure the temp on the motors, but if the motor is hot then the driver most likely is also.
Might be a short, bad motor, or failing driver. Each time this has happened it is at start up, not after running the machine for a time.
Once I get the fault to go away it seems to stay away until next time I turn on the machine.

 

Yep, did all that.

I think I tweaked the current limit up just a bit too much. I brought it back down and so far so good. It hasn't happened again - YET. so over the next week or so if it doesn't happen anymore I would say that's it.

Thanks