Hi everyone. Relatively new Sense user here.
I had a new HVAC unit installed in my home in May of this year. Before installing Sense, I noticed that occasionally in the morning - between 5a and 7a generally - I’d hear a knocking sound coming from the fan unit about once every second or two. This seems to start right after the compressor finishes running, but not necessarily. My AC company is going to come out to look at it, but now that I have Sense I’ve seen a corresponding signature that I’m curious if anyone has seen before.
This image is zoomed in on about a ten-minute segment where this happened this morning. The waveform is practically identical each time it occurs, although the duration varies.
It’s definitely the AC company’s problem to fix, but I wonder if any of the experts on this forum have any thoughts or insights into what may be happening.