Sense software could have deducted that an electric motor was trying to start but failed.
With the right detection software at the Sense side, it could have send you a similar coded message.
Is that what you mean ?
Right now it only warned you about 400% usage and you (and helpers) deducted the rest.
Great story. You might want to at the “Labs” part of your Sense app or web app. There you will find a detector for motor stalls. A jammed compressor motor often shows as a string of motor stalls, as does a jammed sump pump. Sense keeps a 30 day history of motor stalls around, though the Labs detector for Motor Stalls might not find 100%.
Here’s what mine looks like - 0 stalls I the past 30 days.