Completely Factory Resetting Evolution

[Keith Pleas]

I appear to be having an issue with resetting the Evolution - the behavior I got when upgrading software is different than what I can trigger via menus on the P70R

As part of the upgrade to Lighthouse 17 for my Raymarine devices (see signature), I was automatically lead through a reset of the Evolution autopilot. I was prompted for a handful of things, and can particularly remember language, centering the rudder, moving it to its stops, and letting the Evolution "switch the rudder" from hard-over to hard-over.

Now, when I try to replicate this behavior via a "Factory Reset" on the P70R I don't get quite that behavior. I can get prompted for boat type and drive type, but then it just displays (apparently default) values for rudder swing and hardover times. I can update them manually, but...I think there are some other settings that are also stuck in memory.

In particular, I am trying to reset after changing the configuraiton of the RFU to now come from the ST60 RAI. Previously I had a terminal strip in the pilot house and Y-ed the leads from the RFU to both the ST60 and into the rudder terminals on the ACU-400. Everything worked OK, I was able to "power-steer", both the ST60 RAI and the P70R displayed apparently the right angle, but...there was a small dithering back and forth of the ST60 RAI indicator needle while at rest. So I decided to go with Chuck's original recommendation (on the old forum) of going straight to the ST60 RAI, and then going ST-STNG to get the signal onto the STNG bus. Got that installed, the ST60 needle is rock steady, and shifting the rudder is completely in sync between the ST60 and the P70R. So then I go to "Power Steer" on the P70R and I get beeps and "Rudder Feedback" on the P70R and my a78 displays "pilot rudder feedback fault". So I assume that the ACU-400 still thinks the rudder feedback is directly attached and start down the "factory reset" approach, except...it doesn't appear to be doing a COMPLETE reset.

How do I make the ACU-400 forget that it ever had a RFU directly connected? And go back to the out-of-the-box commissioning sequence?

Sidenote: if this configuration is not supported for "power-steering" I can go back to wiring directly to the ACU-400. I even have a spare E22158 and could run independent wiring. But I think I'm missing something obvious here and it has be buffaloed.