Hi, I have done a search on a few posts like this but they haven't helped me solve this problem.
So I have an Aquaero 6 LT and the relay 1,3 pins are wired between the PSON# pin from between the mobo and the power supply and the 5v molex in is receiving power from the 5v standby source from the power supply.

So I have an alarm I am testing with a temp sensor that I touch, when it gets to about 30c I have it trigger emergency shutoff. I have tested 2 seconds, 10 seconds, and just 'relay on'. In all instances the computer ends up restarting, though with the 10 second relay cycle i can tell it waits for that 10 seconds before powering back up. Is there some setting I am missing? Thanks in advance

Thanks for the suggestion. Bios has an option for how to handle a power outage. It is set to power off, so wasnt that. Looking like i need to switch the case power button pins. Sucks since I have to drain my loop to remove a GPU to access those pins. Was hoping to avoid that...