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Question
knuth 28
I have never quite figured out how the data logging in the HC2 works. The Energy and Temperature Panels give me access to data from such devices, but I would like to know how the logging is done and where the data are stored. Monitoring my system is important to me, as it controls a vacation home which is uninhabited for long periods, e.g. through the winter season.
Here is a fresh example which makes me really curious: December 15 between 5 and 6 am the house lost power (the main intake relay had tripped, probably because of a disturbance or surge in the grid). I was able to get to the house today, and reestablished power on December 18 at 9:50 am. The house is set to maintain temperature at about 11 C through the winter, but without power the temperature had dropped to about 5 C when I arrived. After power was reestablished, all thermostats and the HC2 resumed operation as planned.
Now look below at the log from the temperature panel which I was able to retrieve after restart. The three curves on this chart are:
I can clearly see where power was lost, where the purple line does not continue to oscillate. My questions are:
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