I've been lurking on this forum for some time throughout my owner-builder pool that recently completed a few weeks ago. At start-up and fill a problem was detected with the Jandy Savi LED pool lights tripping the Jandy ePump GFCI breaker. The equipment is connected to an Aqualink system and the pump breaker only trips when turning the lights off while the pump is running. Turning the lights on never trips the breaker. The lights are on a separate 15A breaker. There are 3 LED lights (2 in the pool and 1 in the spa). The 2 in the pool are on one Intermatic transformer and Aqualink AUX relay and the 1 in the spa is on a separate Intermatic transformer and Aqualink AUX relay.
I attempted to troubleshoot the problem today thinking that there could be an issue with one of the Intermatic low-voltage transformers. To troubleshoot, I performed the following steps by removing the light junction box cover:
1) Disconnected pool light #1 from transformer #1. The breaker still tripped with power cycling.
2) Disconnected pool light #2 and reconnected pool light #1 to transformer #1. The breaker still tripped with power cycling.
3) Connected pool light #1, pool light #2, and spa light to transformer #2. The breaker still tripped with power cycling.
4) Disconnected pool light #1, pool light #2 from transformer #2. Connected spa light to transformer #1. The breaker still tripped with power cycling.
5) Reconnected spa light to transformer #2. The breaker still tripped with power cycling.
6) Restored all lights to original configuration. The breaker still tripped with power cycling.
So, I don't think the transformers are the problem, and I could not isolate the problem to a single light, since they all trip the breaker. When the pool was filled, the lights were not all securely tightened, so I have a concern that there could be water behind them in the conduit back to the elevated junction box.
I don't know what to try next, could the breaker be bad? What if there was water in the conduit between the lights and junction box, it's possible this could cause a leakage current path that is being sensed on the line for the GFCI breaker? Perhaps the insulation on the pool light wires is damaged, but I would be surprised if all 3 were damaged?
Any suggestions or recommendations would be much appreciated.