Now I'm really confused. I have a second Ninja that I received, that I hadn't taken out of the package. Just for fun, I pulled that one out and plugged it in. It worked fine, without touching anything, the CR14A remote immediately started working -- and it stayed working for that Ninja, no matter what else I did!
I change the House code on the remote. The Ninja still moved.
I changed the Unit code on the Ninja. It still moved.
I pressed buttons to turn on other units on the CR13A remove. The Ninja still moved.
I put the two Ninjas on different unit codes. The Ninja still moved.
I pressed the button on the CR13A remote to activate the unit of the Ninja that didn't move. The other one still moved.
No matter what I do now, the CR14A remote moves the second Ninja -- no matter what settings are selected on either the CR14A remote, the CR13A remote, or either of the two Ninja bases. I'm not sure I understand why the second Ninja still moves when it is House Code A and the remote is House Code O -- or any other house code.
And if I swap the power cord, I get the same effect, so both Ninjas now seem to at least work, physically, but not logically.