Here are two shots of the Sense power meter for this morning. I’ve marked the refrigerator and furnaces. The cursor is at the time of the signal loss.
The refrigerator is an LG with “quiet start linear motor”. (I think that means it is a DC motor). But an inductive load isn’t the culprit as the KP115 is still working. Still measuring power and sending the data over wifi to the Kasa app. The issue is just that Sense has stopped listening to all three of them.