Currently, I only log locally to my new Iotawatt unit, and read graphs using iotawatt.local. Yesterday, I finished hooking everything up and was happy with the readings. I then deleted the current and history logs. Now, I see that the accumulated Energy readings do not start at 0kWh. I monitor two sums Ph1+Ph2+Ph3 (main fuse, 3ph system) and sum of individual user loops. The sum of users should be a bit lower than the main fuse, since I have a few non-monitored loops.
I expected Energy for both of these to start at 0, but the main fuse starts at 239kWh and the sum of individual fuses at 90.5kWh. The difference is du to wrong hookups during installation period. But why were they not reset to 0 yesterday?