The furnace short cycled.
If you are at the exterior, the deadbolt is installed wrong. If you are at the interior, the door knob is installed wrong.
Correct. Exterior picture. Requires a key to exit, no key to enter
Wow, my shiny object syndrome was on the backset for the handle. I install a lot of door knobs in my handyman biz and the normal offsets are 2 3/8" or 2 3/4". Is there an illusion I’m not catching or is that around 4"-5" backset? Did that handle actually operate the latch/tongue?
Yes. And I have NO idea where they found the latch that was that long, as it does not look nearly the age of the building so must have been replaced.