Have you placed the Helix probe INSIDE of the tub and tapped it down yet? Also place the Acurite probe right near the helix probe and tape that down too. If not do that and set your temp back to 90 and give it about 30-45 minutes and look at the readings.

I can't see having your helix at 110 and your tub is only in the 80's.

Give that a shot and get back to us on here.

We'll get it figured out!