I am very excited to have had a new spa sitting on its new pad outside my screened porch. It's an Artesian Pacific Dunes that was a bargain since it was the demo model in the dealership. So, I know it worked before they delivered it - I saw it running.

However, it's not running now it's installed at home - completely dead, except for the sound of a relay clicking. The GFCI trips fine on test, and does not trip when flipped on. There is voltage getting to the hot tub (H -> N 120V, H -> H 240V), but nothing is happening except for the aforementioned relay.

The hot tub company are blaming the electrician since it is hooked up through a sub-panel, and they seem to have some superstitious fear of that. Here's my wiring setup. Any help? Is the problem in the spa or with the wiring?

(Sorry, that pic was kinda big, huh?)