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Hello, I recently bought a used Marquis Epic spa with circuit board: 54278 Marquise MQ2KU EL2 M3. I'm having trouble with my heater and need to troubleshoot my connections and dip switch settings but I'm missing the control system wiring diagram from the control box lid. Do you have the diagram for that circuit board that I can reference? If everything is set correctly I'll probably need a new heater, sensors, &/or a new circuit board, but want to take it one step at a time. Thank you, -Kenneth