Heat sensors aremost likely not in use in MN. They are prohibitively expensive. Not to mention theyve been deemed unconstitutional specifically for that purpose.
It sounds to me like youve got a 175w 12k SunBurst MH.
These lamps are extremely blue and have been very popular because they are cheap the problem is that you get what you pay for, Ive had many problems with these lamps over the years. Infact Ive got a pair of Ballasts running now thats states specifically not to use the SunBurst with them.