Time Calibration issue

[Kukusse]

Hello,

I'm using OpenDTUonBattery with the latest fusion board. It is physically connected to 2 MPPT charge controllers, one Pylontech Battery. The DTU controls an HM-600. The data of the power meter (IR-Lesekopf Hichi) are received per MQTT via Home Assitant.

The system is generally working well. Battery can be loaded. the solar pass throw systems works.

But I have every days some odd "Time Calibration events". It occurs generally on a row of 5 to 10 events, and it looks like that the HM-600 lost connection during this time. Then, it comes back to life.

I changed the frequency of the CMT2300A to 868,00 MHz, I changed also the pool time to 10s, and tried (but failed) to change the serial number of the DTU. I saw those tips on the forum.

Without those "Time Calibration" events, I would have a very nice and smooth working state...

Has someone an idea ?

Thanks

Grüße

Cédric

[Solarteur]

The problem is known and relevant. It has been addressed in several discussions in the "upstream project" (search for "Time Calibration" in "Discussions") e.g.:
tbnobody#1950
tbnobody#1635

[Kukusse]

ok, I will report it then again in the upstream project, I try to be as factual as possible to help solving the issue.