Growatt Fault Codes

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Growatt Error Codes

Error Code Description Solution
No AC connection No utility grid connected or utility grid power failure This error would normally occur during a grid failure, if you still have electricity connected to your property then check your AC isolator or circuit breaker. If both the isolator and CB are 'on' and the problem persists submit a maintenance service request.
AC V outrange Utility grid voltage is out of permissible range This could happen particularly in the summer months if there is a lot of solar in your area, if the problem persists please submit a maintenance service request.
AC F outrange Utility grid frequency is out of range This could happen particularly in the summer months if there is a lot of solar in your area, if the problem persists please submit a maintenance service request.
Over temperature Temperature out of range Restart inverter. If still present, contact Growatt. NOTE: Ensure inverter is not covered causing the inverter to overheat
PV isolation low Insulation problem Submit a maintenance service request
Output high DCI Output current DC offset too high Restart the inverter. If the problem still persists submit a maintenance service request.
Residual 1 high Leakage current too high Restart the inverter. If the problem still persists submit a maintenance service request.
PV voltage high DC input voltage is exceeding the maximum tolerable value Disconnect DC switch immediately and switch off system. Submit a maintenance service request.
Auto test failed Auto test failed Restart the inverter and fault will clear.
100 Voltage fault Submit a maintenance service request.
101 Communication fault Turn off the DC switch and make the inverter totally shut down. Turn on the DC switch to see if the error still exists. If the error persists submit a maintenance service request.
102 Consistent fault. Data received by master and slave processor are different Turn off the DC switch and make the inverter totally shut down. Turn on the DC switch to see if the error still exists. If the error persists submit a maintenance service request.
116 EEPROM Fault When the inverter displays Error: 116, it means there is failure in reading or writing EEPROM.
1. Check when the error appears: if in the morning, if only in the morning, contact Growatt for support.
2. If the error appears all day; (a) restart the inverter, check if the error still exists. (b) If the fault is sustained, the control board needs to be replaced. Submit a maintenance service request.
117 Relay fault There is something wrong with the relay circuit. Restart the inverter, if the problem still persists submit a maintenance service request.
118 Init model fault Submit a maintenance service request.
119 GCFI device damage Something may be wrong with the GCFI device inside the inverter.
(a) Restart the invert for 2-3 times, check whether the error still exists.
(b) If the error still exists submit a maintenance service request.
120 HCT Fault When the inverter shows Error 120 it means something is wrong with the current sensor. Restart the inverter and if the error persists submit a maintenance service request.
121 Communication fault, master processor can't receive data from slave processor See error 101 and 102.
122 Bus voltage fault Submit a maintenance service request.
Residual I High Error: 201 Leakage current too high 1. Restart the invert.
2. If error message still exists, contact Growatt.
PV Voltage High Error: 202 The DC input voltage is exceeding the maximum tolerable value. 1. Disconnect the DC switch immediately.
2. Check the voltage of each PV string with multimeter.
3. If the voltage of PV string is lower than 550V, contact Growatt.
PV Isolation Low Error: 203 Insulation problem 1. Check if panel enclosure ground properly.
2. Check if inverter ground properly.
3. Check if the DC breaker gets wet.
4. Check the impedance of PV (+) & PV (-) between ground (must be more than 25 KΩ or 550 KΩ(VDE 0126)). If the error message is displayed despite the above checking passed, contact Growatt.
AC V Outrange Error: 300 Utility grid voltage is out of permissible range. Please switch off DC switch.
Check AC wiring, especially neutral and ground wire.
Check grid voltage is complied with local grid standard. Restart inverter, if problem still exist, Contact Growatt.
No AC connection Error: 302 No AC connection Check AC wiring.
Check the status of AC breaker
AC F Outrange Error: 304 Utility grid frequency out of permissible range. Please switch off DC switch.
Check AC wiring, especially neutral and ground wire.
Check grid frequency is complied with local grid standard. Restart inverter, if problem still exist, Contact Growatt.
PE abnormal Error: 303 Voltage of Neutral and PE above 30V. 1. Check the voltage of Neutral and PE.
2. Check AC wiring.
3. Restart inverter, if error message still exisits,contact Manufacturer
Auto Test Failed Error: 407 Auto test didn’t pass. Restart inverter, repeat Auto Test, if problem still exist, contact Growatt.
Warning 203 PV1 or PV2 Circuit short Check the PV panel polarity.
Restart the inverter. If the warning still exist, please contact Growatt customer service to replace the POWER board.
Warning204 Dryconnect function abnormal 1.After shutdown,Check the dry Dryconnect wiring.
2.If the error message still exists, contact manufacturer.
Warning 205 PV1 or PV2 boost broken Restart the inverter. If the warning still exist, please contact Growatt customer service to replace the power board.
Warning207 USB over-current 1: Unplug the U disk or monitor.
2: Re-access U disk or monitor after shutdown.
3.If the error message still exists, contact manufacturer.
Warning 401 Inverter communicates with Meter abnormal Meter abnormal 1: Check if the meter is on 2: Check the inverter and the meter connection is normal
Warning 404 EEPROM abnormal Restart the inverter. If the warning still exist, please contact Growatt customer service to replace the M3 board.
Warning 405 Firmware version is not consistent Uptate the right version firmware.
Error: 402 Output High DCI Restart inverter, if problem still exist, Contact Growatt.
Error: 404 Bus sample fault Restart inverter, if problem still exists, Contact Growatt.
Error: 405 Relay fault Restart inverter, if problem still exists, contact Growatt.
Error: 408 Over Temperature If the ambient temperature of inverter is lower than 60°C, restart inverter, if error message still exists, contact Growatt.
Error: 409 Bus over voltage Restart inverter, if problem still exist, contact Growatt.
Error: 411 DSP communicates with M3 abnormal Restart inverter, if problem still exist, update the DSP&M3 firmware;
Change DSP board or M3 board, if problem still exist, contact Growatt.
Error: 414 EEPROM fault. Restart inverter, if problem still exists, contact Growatt.
Error: 417 The data sampled by the DSP and redundant M3 is not the same. Restart inverter, if problem still exists, contact Growatt.
Error: 420 GFCI fault. Restart inverter, if problem still exists, change power board, or contact Growatt.