The GFCI trips intermitantly on my spa. The Blower was unplugged and the GFCI worked. Another Blower was installed and the GFCI trips again. I say the GFCI works and there is still something wrong in the spa. The Dealer says my GFCI is old and needs better noise suppression. They want to replace it with a different brand, at my cost of course.

GFCI 220volt 50Amp Square D.

Thanks,
Paul

Not sure what you need. If they change the GFI at your cost, insist on a warranty, that if the problem remains, they bought the GFI.

What does noise supression have to do with it? Any noise will be coming from their unit.

Any accessory can leak to ground, tripping GFI, If it doesn't trip with the blower removed, the blower likely is leaking to ground.

Not sure what you need. If they change the GFI at your cost, insist on a warranty, that if the problem remains, they bought the GFI.

What does noise supression have to do with it? Any noise will be coming from their unit.


Thanks for your response! How can my GFI be bad when it protects the tub and all of its components except the blower?

I need to refer you to Strats answer:


Any accessory can leak to ground, tripping GFI, If it doesn't trip with the blower removed, the blower likely is leaking to ground.

He said what I should have added.

The point is, based on basic troubleshooting by doing what he suggests shows that the GFI is doing it's job, there must be a ground fault in the motor or the wiring that runs from the breaker to the motor.

All too often when a breaker trips the breaker gets the blame.

I do suggest this too often, hardly ever, but you can purchase a new breaker and try it, and if the ew trips return it, and get the tub vendor to fix their problem.

Here is some advice you did not ask for. If your dealer actually said "The Dealer says my GFCI is old and needs better noise suppression. " he is blowing smoke up your skirt and you need a new dealer. TK and Strat can give you great electrical advice and I can smell a skunk.

Here is some advice you did not ask for. If your dealer actually said "The Dealer says my GFCI is old and needs better noise suppression. " he is blowing smoke up your skirt and you need a new dealer. TK and Strat can give you great electrical advice and I can smell a skunk.

That's good advice, and I agree. If the spa runs 2 3hp pumps, lights, control panel, 5000 watt heater, ozone generator, and only trips when a blower is added to this system, I would say the blower or something related to the blower (plumbing, etc) is bad. The GFI is good. Just needed a little extra confirmation.

The GFI IS Good, Blower has a problem.
With blower disconnected, measure resistance between both blower supply wires and ground.
Likkey you will have resistance.

Another thought...

Sometime depending on how the blowers are plumbed into the system, water can sometimes run back into the blower line, run down into your blower motor. "trip" don't take much.

There is usually a high spot in the plumbing to the blower that should be higher than the water level when full and expected number of persons are in the tub. Maybe the support to hold that in place has dropped lower than it is suppose to be. Some have check valves in that line. (could be bad)

See if they can drill a small drip hole or two on the bottom of the pipe where it enters the blower. Or the blower housing itself, pending on how it sits in the equipment area.