Gotcha.That's expected, as I said in post#391. Based on Amir's test, you can't get it to "protect" mode just by cranking the volume up to 0 dB or even a little higher, using input at 0 dBFS. You can, if tested with a load, such as an 8 ohm or 4 ohm load.
I did notice the fan turned off and temps dropped about 5 degrees during this test.
When I turn the volume to the lowest possible setting (——) the temps did go back up a little and fan back to low.