I installed a new water pump to my old hot tub that I inherited recently, the pump lasted for a day but then stopped working all together and I'm trying to debug why. I'm hoping someone here can give me some advice.
When the pump gets a signal to run either from a heat call or schedule call nothing happens at all. I can turn the pump freely with a screwdriver so it isn't stuck. I have checked the fuses and nothing is blown and also checked the starter capacitor and it seems to be working fine while testing with a multimeter plus I swapped it out with the capacitor from the old pump and nothing changes.
Here is where I am uncertain because I have very limited experience when dealing with electrical systems. The pump power cord has 4 wires: red, black, white, green. My understanding is that since this is a dual pump setup and based on how the previous pump was wired that the red and black for the two speeds, white is neutral or constant, and green is ground. Using a multimeter and during a schedule call I can only get it to read 120v and that's going from the red wire to ground. Going from red to white or red to black give me nothing. I don't know if that is to be expected or if that means there is a problem since I believe the pump requires 240v. And if that is to be expected, any other test I can run with a multimeter before I just give up and say the pump is broken?
Here is the pump in question, its the 1.5 HP Dual Speed: https://www.amazon.com/gp/product/B09ZY9M7ZD