I have a 2003 Jacuzzie 330 spa. I set it for 98 degress because when the digital temperature reads 98, the actual water temperature is 101 (floating thermometer). I could deal with this, by just adjusting setting, but when the tub heats to a reading of 98, the OH light comes on.
If I reset the external GFI, the OH light goes off, but comes on again later.
Thanks for any help. Jim