I have a electrically powered warm water heater (ca. 300L). It is switched using a HEIMAN Smart Plug HS2SK-Z (z-wave) using an automation which is triggered by time. The automation runs reliable but so far approx. once a month the switch is triggered to OFF before the programmed 4 hours. This early termination can happen after 3 hours or 45 minutes. Looking at the Energy consumption plot, this early OFF coincides with a measured energy spike of above 100K W (see screenshot example). The logs show no error messages. The message in the switches logbook is simply:
turned off
12:53:48 AM - 20 hours ago
which stands in contrast to the automation based switch off
turned off triggered by automation
triggered by time
4:30:00 AM - Yesterday
I would need help in the form of your communal experience/knowledge in figuring out if this is a real spike (of course not of 100k W) and I can be happy that the smart plug switches OFF or if this is a common glitch, which could be addressed with some filter. If the later is the case I will need help/pointers with writing such a filter.
Searching the forum, I found that the most likely experts are to be found in the Energy section, so I hope it is excused that while my question measures energy, it is only the primer for a problem.
Many thanks already!
Some basics:
- Core 2024.12.5
- Frontend 20241127.8
- run in docker
Smart plug in question: - HEIMAN Smart Plug HS2SK-Z