PLTS didn't close my garage door...why?

I have a PLTS set up to close the garage door after 15 minutes if it’s night…in case I ever pull out and forget to close it. Last night though, I did forget and the door didn’t close itself…where should I start to see what went wrong? I do have a PLEG that turns the lights on when we come in, and that worked fine when we got home…and my PLTS worked just now when I lowered the timer to 30 seconds and opened the door. After half a minute, the timer went off and the door closed…so the switch itself is set up correctly…

Anyone have any ideas?

Use the LOG command, specify that you want the log in it’s own file.
Then look at the log if it happens again.

Hasn’t happened again since, of course…go figure.