just bought this 95 model and had it delivered. I filled it according to accompaning directions and primed pump with garden hose as in picture and it started up and I tested the jets and all was good.
I went out 3 hours later to check on it and led was flashing and would not run.
the breaker closest to the access door is tripped and will not reset.
what could have happened?

heater high limit tripped (it's the re-set nearest the access door, the other one is the spa-high limit)... Likely a bad circ pump, or despite your best efforts, the circ pump didn't prime.

Also, it's not a '95, but a '94

Try re-setting the high limit, then you must also close the service access door, then the flashing red light will go away... If it starts flashing again within 5 or 10 minutes, the circ pump has either crapped out, or has no prime. It's possible the high limit itself has gone bad, but it's much, much, much more likely the circ pump has failed or needs a prime...

The red light will flash due to either one of the high-limits being tripped (spa high limit or heater high limit), or an open service door (magnetic interlock on the actual door)

Good luck!

thanks, I have tried it 3 times, and each time it only goes about 5 minutes so it must be the pump.

The led keeps blinking on my hotsprings tub. Just replaced heater and the water heated up to 92 degrees before it staring tripping the gfci. I unplug the circulating pump and the led keeps flashing. how do you prime the circulating pump? silent flo 5000