Sungrow Status Codes

Troubleshooting Sungrow Inverter Error Codes

If you encounter issues with your Sungrow inverter, try restarting it first. This simple step can often resolve common problems.

If restarting your inverter doesn’t resolve the issue, refer to the list below for troubleshooting steps specific to each Sungrow error code.

Code	Meaning	What to do?
0002	The grid voltage exceeds inverter allowable upper limit.	Check the voltage of the grid. If the grid voltage exceeds the permissible range of inverter protection parameters, ask the utility grid company for a solution. If the grid voltage is within the permissible range, contact Sungrow Service Dept.
0003	Grid transient voltage exceeds the permissible range	This is a short-term fault due to grid conditions. The inverter should fix itself. If the fault still appears, contact Replenishable Energy 07 4031 2251.
0004	The grid voltage is below inverter’s allowable lower limit.	Check the grid voltage. If the grid voltage exceeds the permissible range of inverter protection parameters, ask the utility grid company for a solution. If the grid voltage is within the permissible range. If code continues to appear, contact Replenishable Energy 07 4031 2251.
0005	The grid voltage is too low.	This is a short-term fault due to grid conditions. Inverter should fix itself. If the fault still appears, contact Replenishable Energy 07 4031 2251.
0006	The AC output current exceeds inverter allowable upper limit.	The inverter will resume if the output current falls below the protection value. If the fault still appears, contact Replenishable Energy 07 4031 2251.
0007	Transient AC overcurrent	The inverter will self-recover after several seconds. If the fault still exists, please contact Sungrow Service Dept.
0008	The grid frequency exceeds inverter allowable upper limit.	Check the grid frequency. If the grid frequency exceeds the permissible range of inverter protection parameters, ask the utility grid company for a solution. If the grid frequency is within the permissible range, contact Sungrow Service Dept.
0009	The grid frequency is below the inverter allowable lower limit.
0010	Islanding	Check whether AC circuit breaker is triggered, the cables are firmly connected. Check whether the grid is not in service. If all conditions are OK and this fault still occurs in the LCD screen, contact Replenishable Energy 07 4031 2251.
0011	The DC component of AC current exceeds the inverter limit.	Inverter should fix itself but if the fault still appears, contact Replenishable Energy 07 4031 2251.
0012	A failure current is detected.	Check the PV strings for ground fault. If the fault still appears, contact Replenishable Energy 07 4031 2251.
0014	The average grid voltage exceeds the permissible range for over 10 minutes.	Wait a moment for inverter recovery. Check the voltage of the grid. If the grid voltage exceeds the permissible range of inverter protection parameters, ask the utility grid company for a solution. If the fault still appears, contact Replenishable Energy 07 4031 2251.
0015	The grid voltage exceeds the permissible range	Check the model of the AC cables. The inverter should fix itself. Wait a moment for inverter recovery. If the grid voltage exceeds the permissible range of inverter protection parameters, contact Replenishable Energy 07 4031 2251,
0016	The bus voltage or power is high.	Inverter should fix itself. If the fault still appears, contact Replenishable Energy 07 4031 2251.
0019	The transient bus voltage is high.
0020	The bus voltage is high.
0021	PV1 input overcurrent is detected	Check the layout and the wiring of PV1 input.
0022	PV2 input overcurrent is detected	Check the layout and the wiring of PV2 input.
0036	The temperature of radiator is too high.	Check whether the placement of the inverter is correct. Check whether the inverter operating ambient temperature is more than the range. Check whether the AC output power exceeds the nominal power. If the fault still appears, contact Replenishable Energy 07 4031 2251.
0037	The internal temperature of inverter is too high
0038	Relay fault is detected	Inverter should fix itself. If the fault still appears, contact Replenishable Energy 07 4031 2251.
039	The insulation resistance is low. (ISO-flt)	Check whether the positive and negative of PV panels is short-circuited with ground lead. Inverter should fix itself. If the fault still appears, contact Replenishable Energy 07 4031 2251.
041	Leakage current self-test abnormality	Inverter should fix itself. If the fault still appears, contact Replenishable Energy 07 4031 2251.
047	The PV configuration mode set in the phone application interface is not in accordance with the configuration in the connection cabinet.	Disconnect the inverter. Re-select PV configuration mode and re-connect PV strings.
048	Sampling channel failure	Inverter should fix itself. If the fault still appears, contact Replenishable Energy 07 4031 2251.
053	Auxiliary DSP detects grid voltage exceeds set protection value	Check the grid voltage. If the grid voltage exceeds the permissible range of inverter protection parameters, ask the utility grid company for a solution. If the fault still appears, contact Replenishable Energy 07 4031 2251.
054	Auxiliary DSP detects grid frequency exceeds set protection value
056	Auxiliary DSP detects grid leakage current exceeds set protection range	Check whether there is a grounded fault of the PV string. If the fault still appears, contact Replenishable Energy 07 4031 2251.
057	Auxiliary DSP AC current sampling channel anomaly	Inverter should fix itself. If the fault still appears, contact Replenishable Energy 07 4031 2251.
058	Auxiliary DSP detects AC current DC injection exceeds inverter set protection range
059	Main and auxiliary DSP communication anomaly
060	Main and auxiliary DSP sampling difference
070	Fans are defective	Stop the inverter and disconnect the AC and DC cables. Check whether the fan duct has been blocked. If not, replace fans.
087	Arc self-detection anomaly warn	Wait a while. Contact Replenishable Energy 07 4031 2251.
088	Arc anomaly fault	Stop the inverter and disconnect the AC and DC cables. Check cable connection for aging and looseness. Re-power on and remove the arc warn manually. Contact Sungrow if this fault still occurs.
089	Arc detection OFF warn	Remove the warning by enabling arc detection function or keep the warn by closing arc detection function.
100	The AC output current exceeds inverter protection limit.	The inverter will resume if the output current falls below the protection value. If the fault still appears, contact Replenishable Energy 07 4031 2251.
101	The grid frequency exceeds inverter allowable upper limit.	Check the grid frequency. If the grid frequency exceeds the permissible range of inverter protection parameters, ask the utility grid company for a solution. If the grid frequency is within the permissible range, contact Replenishable Energy 07 4031 2251.
102	The grid frequency is below the inverter allowable lower limit.
106	The inverter is not grounded	Check whether there is a reliable inverter grounding line, if there is access to the ground, and the fault still exists, please contact Sungrow Service Dept.
200	The bus voltage is high.	Wait for inverter recovery after bus voltage lower. If the fault still appears, contact Replenishable Energy 07 4031 2251.
201	The bus voltage is too low.
202	PV current overcurrent	Wait for inverter recovery after DC current is reduced. If the fault still appears, contact Replenishable Energy 07 4031 2251.
205	AC output replay abnormal	Inverter should fix itself. If the fault still appears, contact Replenishable Energy 07 4031 2251.
307	DC power is too high	Check whether the configuration of PV is in the range indicated in the specification. If the fault occurs repeatedly, contact Sungrow Service Dept.