I installed a Jacuzzi Fusion Spa Tub - has a heated air blower 120 Volts and a motor and inline heater 240 Volts. I installed a 20 amp 120 V GFCI circuit breaker that runs to a GFCI receptacle for the blower and also a 240 Volt 20 amp GFCI circuit breaker that runs to a single 240 volt receptacle (non GFCI - couldn't find any 240 GFCI receptacles). I've also run a #8 ground wire to the unit that attaches to the heater. The tub was working fine except a couple times the heater went down and had to be reset - reset button. HOWEVER last night the entire thing just stopped. It has power - the control is running a diagnostic - lights blink, etc. I have reset the breakers multiple times but the tub just won't start. It should do its cleanout routine when the sensors get wet - air blows out for a few minutes - but I can't get it to do anything. How can I tell if my GFCI breaker is faulty? Do they go bad - I think I heard GE GFCI breakers have issues. I need to check this out first before contacting Jacuzzi to come out and fix the tub.
Thank you for any information - and if you know of any issues involving Jacuzzi spa tubs that would be helpful too. Thanks

Can you unplug the pump, the blower, other accessories to determine which, if any are leaking to ground?

I'm not sure what you mean by 'leaking to ground'? But yes I can uplug both the blower and the moter - both are piggy back type plugs - the moter + heater (240 v 20 amps) and the blower and control panel (120 V 20 amps). I've unplugged both but can't determine - how do I determine - 'leaking to ground' the GFCI breakers are not tripping - but I suspect one or both has stopped working properly.

Well if you have power and the control panel works then the breaker is working. There is no in-between. It either works or it doesn't.

Where did you run the #8 BOND to?

If Motor is disconnected and GFI doesn't trip, Motor may have a problem.
If you unplug the blower and it doesn't trip, then blower may be leaking(Have resistance to) ground.

Right - the breakers don't trip and didn't trip when I was running the tub and it just stopped. When I unplug either the motor or the blower - that doesn't cause the breakers to trip - why would that cause breakers to trip by unplugging the motor or blower? The control panel is trying to work - but it is in a weird state - blinks all over the place like a diagnostic. I've checked voltage and I have 240 from the 2 pole breaker and 120 from the other as I expected.

How does something 'leak to ground' what does that mean.

The ground wire that I ran was for the heater - it has grounding screw on the casing.

It could just be the tub is a lemon and has nothing to do with the wiring or breakers being bad.

GFI's trip if the hot or neitral draw a different amount of current. If their was some corrosion/resistance from hot to ground(leak), then the Hot would be carrying more current than the neutral, Ground would be carrying remaining current creating an unbalanced load on the neutral.