240V 2 wire spa

[Smccory]

I had a man call me saying his spa unit is tripping off. It has a 240 V 60 amp gfci breaker and a 6/3 running to a standard disconnect by the hot tub with a bonded ground and isolated neutral. The spa itself is only a 240V two wire system. So no neutral. Everything seemed to be working correctly before hand and the hardware other than perhaps something in the spa itself should be fine. So other than equipment failure could there be something in the wiring/disconnect/breaker I am missing that is causing the problem? Thanks

 

[retirede]

“Beforehand?” What’s changed?

90% of the time, when a spa that’s been working starts tripping the GFCI, it’s a problem internal to the heater.

 

[qcroanoke]

“Beforehand?” What’s changed?

90% of the time, when a spa that’s been working starts tripping the GFCI, it’s a problem internal to the heater.

I agree. Disconnect the heater after the gfi tripped while you are there. Then reset and turn it back on. And see what happens.

 

[infinity]

It does sound like an internal problem with the unit since it was working. Can the breaker be reset at all or does it instantly trip?