Is the ICE coolant and Inverter coolant system separate from each other?

I just replaced my coolant valve (P1121) fix and I had a little more than a gallon come out of the car, and added a little less than a gallon back in. I'm keeping some coolant in my car at all times for the next few months, but are the two coolant systems independent of each other? And where can I find a guide/diagram on how to change the ICE coolant? I've searched but there are too many results, and there isn't a central thread that links to procedures and operations, everything is just scattered all over the forum.

 

Yeah I think I have some bleeding to do because I took it for a drive and had the red triangle pop up for a second and a message on the LCD screen saying "problem". But this happened for only one second, I pulled over and checked the coolant level, and there was nothing wrong. I just got home, I'll open up the bleed valve real quick and see if any air comes out.

 

No. From what I understand, if the temps get too high the vehicle will automatically shut down the inverter.


I also tried to bleed more air from the system but nothing but coolant came out. I closed it because coolant was spilling on the floor. Or do I need to get a PVC pipe to direct the coolant back into the reservoir so that the bubbles have time to cycle through?