Hi! I just refilled my hot springs hot tub after a clean and it won’t heat up now. Usually it was heating once the power went on. There are bubbles coming up in the middle and no other issues that I see. It DOES heat when the jets are on. It has been like this for over a week so it’s not a timing issue with “letting it heat up.” Is there a common reason why it would only heat with jets on?
thanks!