When my main electric panal was shut off to have work done, my spa (Artisian Gold w/ Gecko circuit board) heater goes to 87 w/ 3 flashing dots. I cannot get the heater to heat up again. I tried flipping the breaker off for a few minutes which did nothing. There must be some touch pad command to reset the heater. Can you help?

Did you ever find out what was wrong with the hot tub? I'm having the same problem.

We're having the same problem. 3 flashing dots heater won't come back on. Everything else works fine.

3 flashing dots usually indicates an open circuit flow/pressure switch usually as a result of blocked filters - remove filters and try without them.
it could also be a overtemp fault, but less likely
A permanently closed presuure/flow switch will also cause this fault