Yes that was the case on one of the two times the test tried to eject the ice. Fingers crossed it's not the main board. I'm going to try and replace the ice maker unit first and see if I get lucky. Thanks for the reply!
An end to the thread-
we replaced the ice maker ourselves. It's an easy switch out with just one screw. YouTube had a simple video.
The change of ice maker worked! Thankfully no board replacement required.