I have a 5 stop swift Futura. Mg.traction It trips out On error 24 only in the down direction. It will stop immediately and level to closest floor. I replaced the scrs. Didn’t fix it. I’m thinking reg board is the problem. Anybody see this before ? 24 is a drive fault. It indicates a tach fault from reg board it occurs with excessive variance between analog demand velocity and analog tach reference velocity