I have not used a thermometer but have got in it at 105 degrees and it felt pretty accurate. I have not let it get to 112 degrees. I have been cutting it off at the breaker after I get out. One time I came out and it had a message that said something to the effect, “Too hot, do not get in”. Can’t remember the exact message. So, if I am understanding you correct I need to let it get to 112 and see if it cuts off?
We have had a hot humid summer but even when I have had it cut off for a few days and the water has cooled down in the 70’s, it still runs non-stop until I manually cut it off. The reason I have had to cut it off at the breaker is when I cut it off by the on/off button it stays off about 20 minutes then cuts back on, even though the temperature is already above the set temperature.
Thank you so much for trying to help.