To: @rverwij
See my response to another SENSE user:
Your A/C compressor run/start capacitor may be failing or you need to add a ‘hard-start kit’.
You will need several very detailed close-up views of your SENSE power graph when the A/C unit starts. @kevin1 is correct. You don’t need to post any ‘bubble’ pictures. If you look at my power graphs from my A/C, you will see two very distinct large spikes. The first spike is the A/C compressor starting with another large spike when the compressor cooling fan starts. As the compressor builds pressure in the freon, the wattage increases.
Use the “Search” feature on the SENSE Discourse forum posts for entries with “HVAC”, “AC” and dcdyer. You will see numerous past posts on this subject.
Maybe someone has posted a similar issue to your problem.
Good Luck!