Sungrow Inverter Fault Codes

Fault Code Description Troubleshooting
0002 The grid voltage exceeds
inverter allowable
upper limit.
1. Check the voltage of the grid.
2. If the grid voltage exceeds the permissible range of inverter protection parameters, ask utility grid company for solution.
3. If the grid voltage is within the permissible range, contact Sungrow Service Dept.
0003 Grid transient voltage
exceeds the permissible
range
1. This is a short-term fault due to grid condition. Wait a moment for inverter recovery.
2. If the fault still exists, please contact Sungrow Service Dept.
0004 The grid voltage is below
inverter’s allowable
lower limit.
1. Check the grid voltage.
2. If the grid voltage exceeds the permissible range of inverter protection parameters, ask utility grid company for solution.
3. If the grid voltage is within the permissible range, contact Sungrow Service Dept.
0005 The grid voltage is too low. 1. This is a short-term fault due to grid condition. Wait a moment for inverter recovery.
2. If the fault still exists, please contact Sungrow Service Dept.
0006 The AC output current
exceeds inverter
allowable upper limit.
1. The inverter will resume if the output current falls below the protection value.
2. If the fault still exists, please contact Sungrow Service Dept.
0007 Transient AC overcurrent 1. The inverter will self-recover after several seconds.
2. If the fault still exists, please contact Sungrow Service Dept.
0008 The grid frequency exceeds inverter allowable upper limit. 1. Check the grid frequency.
2. If the grid frequency exceeds the permissible range of inverter protection parameters, ask utility grid company for solution.
3. 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 1. Check whether AC circuit breaker is triggered.
2. Check whether AC cables are all firmly connected.
3. Check whether grid is not in service.
4. If all conditions are OK and this fault still occurs in the LCD screen, contact Sungrow Service Dept.
0011 The DC component of AC current exceeds inverter limit. 1. Wait a moment for inverter recovery.
2. If the fault occurs repeatedly, contact Sungrow Service Dept.
0012 A failure current is detected. 1. Check the PV strings for ground fault.
2.  If the fault occurs repeatedly, contact Sungrow Service Dept.
0014 The average grid voltage exceeds the permissible range for over 10 minutes. 1. Wait a moment for inverter recovery.
2. Check the voltage of the grid. If the grid voltage exceeds the permissible range of inverter protection parameters, ask utility grid company for solution.
3. If the fault occurs repeatedly, contact Sungrow Service Dept.
0015 The grid voltage exceeds the permissible range 1. Check the model of the AC cables.
2.Wait a moment for inverter recovery.
3. If the grid voltage exceeds the permissible range of inverter protection parameters, ask utility grid company for solution.
4.  If the fault occurs repeatedly, contact Sungrow Service Dept.
0016 The bus voltage or power is high. 1. Wait a moment for inverter recovery.
2. If the fault occurs repeatedly, contact Sungrow Service Dept.
0019 The transient bus voltage is high. 1. Wait a moment for inverter recovery.
2. If the fault occurs repeatedly, contact Sungrow Service Dept.
0020 The bus voltage is high. 1. Wait a moment for inverter recovery.
2. If the fault occurs repeatedly, contact Sungrow Service Dept.
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. 1. Check whether the placement of inverter is correctly.
2. Check whether the inverter operating ambient temperature is more than the range indicated in the specification.
3. Check whether the AC output power exceeds the nominal power.
4. If the fault still exists, please contact Sungrow.
0037 The internal temperature of inverter is too high
0038 Relay fault is detected 1. Wait a moment for inverter recovery.
2. If the fault occurs repeatedly, contact Sungrow Service Dept.
039 The insulation resistance is low. (ISO-flt) 1. Check whether the positive and negative of PV panels is short-circuited with ground lead.
2.  Wait a moment for inverter recovery.
3. If the fault occurs repeatedly, contact Sungrow Service Dept.
041 Leakage current self-test abnormality 1. Wait a moment for inverter recovery.
2. If the fault occurs repeatedly, contact Sungrow Service Dept.
047 The PV configuration mode set in the phone application interface is not in accordance with the configuration in the connection cabinet. 1. Disconnect the inverter.
2. Re-select PV configuration mode and re-connect PV strings.
048 Sampling channel failure 1. Wait a moment for inverter recovery.
2. If the fault occurs repeatedly, contact Sungrow Service Dept.
053 Auxiliary DSP detects grid voltage exceeds set protection value 1. Check the grid voltage.
2. If the grid voltage exceeds the permissible range of inverter protection parameters, ask utility grid company for solution.
3. If the grid voltage is within the permissible range, contact Sungrow Service Dept.
054 Auxiliary DSP detects grid frequency exceeds set protection value 1. Check the grid frequency.
2. If the grid frequency exceeds the permissible range of inverter protection parameters, ask utility grid company for solution.
3. If the grid frequency is within the permissible range, contact Sungrow Service Dept.
056 Auxiliary DSP detects grid leakage current exceeds set protection range 1. Check whether there is a grounded fault of the PV string.
2.  If the fault occurs repeatedly, contact Sungrow Service Dept.
057 Auxiliary DSP AC current sampling channel anomaly 1. Wait a moment for inverter recovery.
2. If the fault occurs repeatedly, contact Sungrow Service Dept.
058 Auxiliary DSP detects AC current DC injection exceeds inverter set protection range 1. Wait a moment for inverter recovery.
2. If the fault occurs repeatedly, contact Sungrow Service Dept.
059 Main and auxiliary DSP communication anomaly 1. Wait a moment for inverter recovery.
2. If the fault occurs repeatedly, contact Sungrow Service Dept.
060 Main and auxiliary DSP sampling difference 1. Wait a moment for inverter recovery.
2. If the fault occurs repeatedly, contact Sungrow Service Dept.
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 Sungrow if device is still in self-detection warn state.
088 Arc anomaly fault 1. 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.
2. Contact Sungrow if this fault still occurs.
089 Arc detection OFF warn Remove the warn by enable arc detection function or keep the warn by closing arc detection function.
100 The AC output current
exceeds inverter
protection limit.
1. The inverter will resume if the output current falls below the protection value.
2. If the fault still exists, please contact Sungrow Service Dept.
101 The grid frequency exceeds inverter allowable upper limit. 1. Check the grid frequency.
2. If the grid frequency exceeds the permissible range of inverter protection parameters, ask utility grid company for solution.
3. If the grid frequency is within the permissible range, contact Sungrow Service Dept.
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 thre is access to the ground, and the fault still exists, please contact Sungrow Service Dept.
200 The bus voltage is high. 1. Wait for inverter recovery after bus voltage lower.
2.  If the fault occurs repeatedly, contact Sungrow Service Dept.
201 The bus voltage is too low. 1. Wait a moment for inverter recovery.
2.  If the fault occurs repeatedly, contact Sungrow Service Dept.
202 PV current overcurrent 1. Wait for inverter recovery after DC current is reduced.
2. If the fault occurs repeatedly, contact Sungrow Service Dept.
205 AC output replay abnormal 1. Wait a moment for inverter recovery.
2.  If the fault occurs repeatedly, contact Sungrow Service Dept.
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.

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