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ErrBase

Solaredge Inverter Error Codes

All Solaredge inverter error codes with step-by-step troubleshooting, multimeter specs, and OEM part numbers.

8 error codes

CodeMeaning
03X9AThe inverter cannot communicate with the SolarEdge monitoring server, or there is a communication fault between the inverter and its power optimizers.
moderateintermediate
03X9BOne or more power optimizers on the solar panels have lost communication with the inverter. The affected optimizers are not reporting data.
moderateintermediate
18XB5The inverter has detected an internal hardware failure, most commonly in the power conversion board or a critical internal component.
highadvanced
18XB7The AC grid relay or contactor inside the inverter failed to close or open correctly during the grid connection sequence.
highadvanced
18XF5The inverter has detected that DC current is being injected into the AC grid above the allowed limit. This is a grid protection fault that prevents DC contamination of the AC network.
highadvanced
2XBThe AC grid frequency has deviated outside the acceptable range (typically 47-52 Hz for 50 Hz grids or 57-62 Hz for 60 Hz grids). The inverter disconnected from the grid as required by safety and utility regulations.
moderateintermediate
3X2The AC grid voltage at the inverter connection point has exceeded or fallen below the acceptable range. The inverter has disconnected from the grid as required by safety and utility interconnect standards.
moderateintermediate
HUBHub page covering all SolarEdge SE series inverter fault codes and their diagnostic paths.
lowbeginner