Problem solved . The troubling part is that three local hot tub dealers had no clue .
I called Hot Springs at the suggestion of the last dealer I went to . He gave me the repair line for the trade only , made me promise I wouldn't say where I got the number . The lady on the phone said they want the consumer to make an appointment for a service call. She then said tell me the problem and maybe I can help .
I told her the story etc.... Her first question was , " is the water in the tub to cold " BINGO ! That was it , that's why it kept tripping the high limit sensor . Water drained , mixed from hot and cold outside faucet and I'm back in business .