Boris Raeschler

Ok, you're right. That was one reason. It was dark here at that time of night. I also cleared the panels of snow, restarted the DTU but it still not...

> Are you using more than one DTU? I ask because the TimeSync messages in the log have strange end times. Until yesterday I've had two hoymiles DTUs online But...

> > But now only the Opendtu is online. > > I this case I assume you are using two DTU's? That not possible due to different frequency jumping algorithm...

> Regarding the HMS-1600-4T are you using an European version of this inverter ? There have been reports that the North American / US version of this inverter may need...

> The other thing you can try: ensure GPIO2 and 3 of the CMT2300A chip are set to "-1". I got the issue that the interrupts triggered by the CMT2300A...

> Hi, if you're having a HMS-1600 and it connects the the openDTU, your openDTU is equipped with a CMT wireless module to send/receive data to/from your inverter. As it...

> @raebo did you use the official OpenDTU build or a specific build for the OpenDTU Fusion board ? > > And according to the [docs from the Fusion board...

@stefan123t Do you have any further ideas how to fix my problem with the HM-1500?? Thanks Boris