Welcome to the forum. We have lots of experts here, but till they come along, can you take the panel off and have a look? I'm technically competent, but no real experience as a hot tub professional. Do you have more than one pump? I had a similar situation. My tub had 2 pumps. I was able to unplug one pump from the main board and still use the tub till I had it fixed. Frequently visual inspections will provide some obvious clue.