Ray09

Stumped! We bought a used Hot Springs Vista tub. Hooked up all the electric and it worked fine for 3 days then completely stopped. Had a tech in and they replaced the circuit board. Worked again but would not heat. Jumped the integrated pressure switch and that did not help. Replaced the heater board because I was not getting proper voltage. Nothing looked fried on the board when I removed it. The tub worked for a few weeks and then the green light showing ready was not on again. We turned off the tub assuming the high temp switch went off and it heated back up. Lasted a week and happened again. Turning it off this time did not work. Opening the panel I noticed there was a red light blinking on the heater board. Cleaned the filters, checked for air locks and blinking light is still on. I took the heater board off and it looks fine. Nothing is fried. Any other suggestions would be greatly appreciated. Thanks