I have 2 EGV 3000s in parallel, single phase (120v), each connected to a 2400watt array. Since the workload is small I typically have the slave unit in standby mode so it is acting as a charge controller. Today on a bright sunny day this unit keeps throwing a fault code 4. I have reset the unit and it ran fine for a while, however it is alarming again. This time I disconnected the solar array and reset the unit and reconnected the solar array and it immediately set the fault code again. Any help would be greatly appreciated.
