I use the SC1/2/3 Alpha commands a lot in cruise; checks the 'dialed' cockpit/cabin temperature against the actual zone temperature.
Thanks for the complete list, IFP. Am I right in thinking that the LGDW (LGCIU Discrete Word2) prompt will return an answer of air/ground mode? Just that the multitude of failures that can arise with a failure of that mode in the air are so many and disconcerting that it would be nice to keep a simple resolution of that issue in the back pocket just in case... yeah, I know it would be a very busy little cockpit if it happened, just thinking out loud really, and remembering the nightmare checklist on the 777 (a few years ago, at least) if there was a confusion between the modes.
Squid