1. Dimension One/Interlude/1997
2. Balboa 51491 circuit board
3. 2-speed jet pump 240v (brand unknown)

Through an earlier post it became clear that my circuit board needed repair. I live in Maine so to keep the tub from freezing I've temporarily connected the circulation pump to a 120v GFCI outlet on my deck. To keep the tub warm-ish, I've hard-wired the heater terminals to L1 and L2 (red and black on the terminal block inside the control pack) and am using the main 240v GFCI breaker to manually run the heater for an hour or so a day. I'd also like to connect the blower pump in a similar fashion, but am unsure of the wiring.

In principle, I know that for a 240v, 2-speed pump the green goes to ground, the white is neutral, red is low speed and black is high. If I wanted to run the pump on low speed, would I connect the motor red to L1, and motor white to neutral (on the terminal block?) Then, what if I wanted to run the motor on high speed? Would I simply ADD connecting the motor black to L2, or?

I referred to the wiring schematic for the board, thinking I'd be able to figure it out, but was unable to determine how to proceed. In fact, it left me confused: the motor red and black are connected to their respective relays on the board, of course, and this much makes sense to me. But, it shows that the motor white connects to finger 4 on the circuit board, which in turn is connected to L1 (red, from the terminal block)... and this IS how it was wired, before I disassembled to send the board away for repair.

Not being a qualified electrician, I don't understand how it would seem right that the neutral from the motor should be connected to a finger on the circuit board that itself is connected to L1?

If anyone can help explain both how I can temporarily hard-wire the pump, and the principles regarding the wiring to the circuit board, I'd be most grateful.

Thanks in advance,
Gary

White isn't neutral on the motor, it's called a common line and supplies constant 120v to the motor regardless of whether it's in high or low speed. Let's say L1 is connected to the white wire, then L2 is directed to red or black depending on what speed the pump should be on. So the total 240v required to run the motor comes from white + red or black.