Don't need any assistance, thought some might be interested in what it takes to replace the ac blower motor control board.
Symptoms...ac blower runs nonstop in high mode even with no key in ignition. 2019 Volvo VNL760.
Was surprised about removing the entire lower dash, both sides, in order to have access to the blower case spring clips and both screws for the controller board. Probably would be easier to remove passenger seat instead of slithering around. Notes for next time.
Hope someone finds it useful. Oh, part cost was $58.00 from dealership.