steve2777
1 mW
I have a Hyper ebike that came with a 3 level PAS controller, and want to convert it to a 5 level. I purchased on Amazon a s866 controller and screen (sold as a set), and have removed the old one and installed the new. Most wire connections were straightforward and color coded, although I had to remove some connectors and install new ones or direct solder. On startup, the screen worked and the rear wheel rolled forward a few inches, suggesting the controller and motor were talking. I've set the screen parameters as I think they should be. (I did notice I can't access parameters p10 - p20; perhaps that's related to the other problem. ) But no pedal assist occurs when I turn the pedals. The new wiring diagram is enclosed. The linear brake, auxiliary power and boost signal connectors are unused. Photos of the original and new controller boxes are enclosed. The cable from the motor contained 5 small wires that color match to the hall line connector on the new box (but no white wire, which I've read is probably a temperature signal). Everything else is color to color, except the speed signal / PAS, and I've enclosed a photo of that connection. (That's my second try, after the blue and yellow didn't work either.) Are there any tests I can do with a multimeter, or other things to try? I'd hate at this point to have to abandon and re-install the old controller. Thanks!

