Thanks everyone. It seems the logs is the way to go then.
One last question. As @jshimota suggested, will broken rules show up in the logs when the rule is broken? Would that show up as an error in the logs?
I am just trying to understand this platform a little better.
The reason I was looking into this was because the day before yesterday we had a series of blackouts during a storm and many of my room lighting apps stopped working. It took all day yesterday to repair the rules.
I had Zigbee buttons that stopped registering in the hub while watching the status of each one. I also had 5 or 6 motion sensors that stopped working.
With the buttons and sensors not talking to the zigbee radio, that meant my power plugs and sengeld bulbs to stop responding even from the devices own setup page.
I tried to use the repair apps option, and it did not do anything. On some of the bulbs, I had to actually re-pair them to the hub before I could even get them change states. Same with the power plugs.
The power switches mounted in my fixtures did connect back to the hub on their own, so those room were better at behaving as expected. ( I could still see and control them from the home screen in the hub.
It also took hours of re-pairing to get the battery motion sensors and battery push buttons to finally re-pair and start working.
It was a pain that many of the battery operated devices (buttons and motion sensors) and a few mains devices (sengeld bulbs and some Third Reality power plugs) had to be re-paired and in some cases (for battery devices) had to even be deleted and then re-paired from scratch and then repaired the apps from scratch before they would start working again.
So I guess I just have to watch the logs, if in fact the logs will show as errors.
Everything does seem to be working now that I went through all of that.
As a side note, my hub never lost power during the storm itself because of the backup power supply it is connected to, but the apps and devices just went squirrely.
Thanks everyone for the info and suggestions. I will keep an eye on it for the next few days to see how it behaves.