PV SW Set Error on Growatt 40K TL3-NS LCD Display Reason: Default, Dipswitch should be OFF OFF. It means 2 MPPT function will work .If you set others, it will have the fault. 4 PV mode: Only MPPT 2 can work
Off Grid Inverter 02 warning Over temperature warning Testing method 1: a. Access OSS system https://oss.growatt.com/login?lang=en b. Download History data Temperature 1: temperature sensor on mainboard Temperature2: Temperature sensor on DC-DC circuit of mianboard Temperature3: Temperature sensor on MPPT board c. You can confirm which board needs to be replaced based on the 3 temperature …