Well fortunately, with a Pro 2, you can install utilities and programs. You can go to http://www.freewarefiles.com and probably find a utility that will display system information to include the cpu fan rpm speed, temperature, etc.
I don't have a Pro or Pro 2 but I do have that Intel Core i5 (4th gen. Haswell) processor in a desktop and I can tell you that, that processor practically does not put out much heat. I get nothing but cool air coming out of the vents even if I use the machine all day long.
The heat you are feeling which is probably around the mid-center section will be the two battery packs which do put out heat when in use.
If the cpu gets up to a certain temperature, it will then kick the fan on if needed but will shut it down if not. Most new computers today do that and is not a problem.
If the fan fails, that tablet will not turn on. The cpu will read that fan is not available and will refuse to activate the tablet. It is designed to do that and so are desktops and laptops.
Your tablet has no problem if it is running fine. Just don't obstruct the vents in any fashion.