migel267

tested, negotiated with the manufacturer ... their engineer promised to conduct tests and disappeared

Good day to the forum participants. There is a clone AXPERT 5kW 48V MPPT 120-450V. Installed without battery. Installed in an unheated room, but the temperature does not drop below 5 ° C. And after a month of operation, the inverter began to fall into error 02 (overheating). They began to conduct experiments with a service engineer ... during which they found out that the inverter "freezes", that is, the temperature sensor reacts to cold as overheating. An attempt to involve the manufacturer in solving the problem did not give results ... the Chinese asked to send a bunch of videos and measurements, after which their engineer said that he would schedule a test ... and disappeared. Can anyone come across such a problem? P. S .: I work in a small company that is engaged in the installation of solar power plants (among other things)

Hello. I'm from Ukraine. My name is Mike. I have a clone of Axpert . 5kW 48V high voltage MPPT . It's installed in not heated room. When air temperature low then 10°C ,UPS take me error 02 . May be any of members can help me ? All resistance of sensors are normal. I conducted an experiment and cooled the sensor, when i cooled them , i have got error 02 .