I think SAF 3 is turned on by the CPU. Your safety string could be fine but the CPU is in control of SAF 2 and 3 I believe. You have a drive fault and/or some other problem. Is DE high?

I agree on the stabilant, works for me.

Not trying to hijack this thread but I'm curious about say doing an Automatic Hoistway Scan (Learn trip/Floor Height Update etc..). What else needs to be done? NTS and ETS? I usually look at the FCP's, write them down then perform a scan. What would the "proper" procedure be?