Ok I have a rack/temp question....

Got my new rack set up and I taped my Helix probe on the 4" rear flex on the bottom level right where it bends L shaped just like Jeff @ Boaphile told me. I put it thru the hole in the back bottom where the cords for the flex come thru.
First off my room temps are usually around 76-79 degrees. No matter what I set my Helix at 92-98 it never goes off. The green light is always on.
Temps in the tubs seem to be fine, depending on what level and what I use as substrate, from 79.9 to 93.5 and humidity is good 54-60 range.
I just don't get why the Helix never shuts off ? On my AP cage it would shut off and on depending. Is it because of my room temps??