Raymond81

Only wiring diagram I have is this one.

Would the fuses not trip if that happens?

My hottub tripped it's 30 Amp fuses. I replaced my fuses and when I went to start the pump. The circuit board caught fire. I have replaced the board and all damaged wires. But im reluctant to start it up as I don't want this to happen again. I got this used hottub about 6 months and I filled it with water and started it up with no issues to about 15 hours of it heating up all settings of the pumped worked before the fuses went. When I put in the new fuses and pushed on the jets. The board started to pop and crack and glow red.