Sungrow Inverter Fault Codes

Fault CodeDescriptionTroubleshooting
0002The 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.
0003Grid 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.
0004The 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.
0005The 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.
0006The 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.
0007Transient AC overcurrent1. The inverter will self-recover after several seconds.
2. If the fault still exists, please contact Sungrow Service Dept.
0008The 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.
0009The grid frequency is below the inverter allowable lower limit.
0010Islanding1. 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.
0011The 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.
0012A failure current is detected.1. Check the PV strings for ground fault.
2.  If the fault occurs repeatedly, contact Sungrow Service Dept.
0014The 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.
0015The grid voltage exceeds the permissible range1. 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.
0016The bus voltage or power is high.1. Wait a moment for inverter recovery.
2. If the fault occurs repeatedly, contact Sungrow Service Dept.
0019The transient bus voltage is high.1. Wait a moment for inverter recovery.
2. If the fault occurs repeatedly, contact Sungrow Service Dept.
0020The bus voltage is high.1. Wait a moment for inverter recovery.
2. If the fault occurs repeatedly, contact Sungrow Service Dept.
0021PV1 input overcurrent is detectedCheck the layout and the wiring of PV1 input.
0022PV2 input overcurrent is detectedCheck the layout and the wiring of PV2 input.
0036The 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.
0037The internal temperature of inverter is too high
0038Relay fault is detected1. Wait a moment for inverter recovery.
2. If the fault occurs repeatedly, contact Sungrow Service Dept.
039The 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.
041Leakage current self-test abnormality1. Wait a moment for inverter recovery.
2. If the fault occurs repeatedly, contact Sungrow Service Dept.
047The 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.
048Sampling channel failure1. Wait a moment for inverter recovery.
2. If the fault occurs repeatedly, contact Sungrow Service Dept.
053Auxiliary DSP detects grid voltage exceeds set protection value1. 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.
054Auxiliary DSP detects grid frequency exceeds set protection value1. 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.
056Auxiliary DSP detects grid leakage current exceeds set protection range1. Check whether there is a grounded fault of the PV string.
2.  If the fault occurs repeatedly, contact Sungrow Service Dept.
057Auxiliary DSP AC current sampling channel anomaly1. Wait a moment for inverter recovery.
2. If the fault occurs repeatedly, contact Sungrow Service Dept.
058Auxiliary DSP detects AC current DC injection exceeds inverter set protection range1. Wait a moment for inverter recovery.
2. If the fault occurs repeatedly, contact Sungrow Service Dept.
059Main and auxiliary DSP communication anomaly1. Wait a moment for inverter recovery.
2. If the fault occurs repeatedly, contact Sungrow Service Dept.
060Main and auxiliary DSP sampling difference1. Wait a moment for inverter recovery.
2. If the fault occurs repeatedly, contact Sungrow Service Dept.
070Fans are defectiveStop the inverter and disconnect the AC and DC cables. Check whether the fan duct has been blocked. If not, replace fans.
087Arc self-detection anomaly warnWait a while. Contact Sungrow if device is still in self-detection warn state.
088Arc anomaly fault1. 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.
089Arc detection OFF warnRemove the warn by enable arc detection function or keep the warn by closing arc detection function.
100The 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.
101The 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.
102The grid frequency is below the inverter allowable lower limit.
106The inverter is not groundedCheck 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.
200The bus voltage is high.1. Wait for inverter recovery after bus voltage lower.
2.  If the fault occurs repeatedly, contact Sungrow Service Dept.
201The bus voltage is too low.1. Wait a moment for inverter recovery.
2.  If the fault occurs repeatedly, contact Sungrow Service Dept.
202PV current overcurrent1. Wait for inverter recovery after DC current is reduced.
2. If the fault occurs repeatedly, contact Sungrow Service Dept.
205AC output replay abnormal1. Wait a moment for inverter recovery.
2.  If the fault occurs repeatedly, contact Sungrow Service Dept.
307DC power is too highCheck 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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