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| Failure code | Failure type | Possible reason | Countermeasure |
| E001 | Overcurrent during accelerating process | Accelerating time is too short Improper V/F curve Restart rotating motor Low power source voltage Too small power of the inverter | Prolong accelerating time Adjust V/F curve setting，adjust manual torque boost or change to automatic torque boost Restart after motor Check input power supply Choose inverter with high-power |
| E002 | Overcurrent during decelerating process | Decelerating time is too short Have potential energy load or big inertia load Power of inverter is a bit small | Prolong decelerating time Increase braking power of external energy consumption braking subassembly Choose inverter with high-power |
| E003 | Overcurrent during constant speed process | Load change suddenly orHave unwonted phenomena Accel/Decel time is set to too short Low power source voltage Power of inverter is a bit small | Check or reduce break of the load Prolong accelerating decelerating time properly Check input power supply Choose inverter with high-power |
| E004 | Overvoltage during accelerating process | Unwonted input voltage Accel time is set to too short Restart rotating motor | Check input power supply Prolong accelerating time properly Set speed checking restart function |
| E005 | Overvoltage during decelerating process | Decelerating time is too short Have potential energy load or big inertia load | Prolong decelerating time Increase braking power of external energy consumption braking subassembly |
| E006 | Overvoltage during constant speed process | Unwonted input voltage Accel/Decel time is set to too short5 Input voltage change abnormally Load inertia is a bit big | Check input power supply Prolong accelerating decelerating time properly Assemble reactor Use energy consumption subassembly |
| E007 | Controlpower supply overvoltage | Unwonted input voltage | Check input power supply or look for service |
| E008 | Inverter overload | Accel time is set to too short DC injection braking is too big Improper V/F curve Restart rotating motor Power source voltage is too low Load is too big | Prolong accelerating time Reduce DC injection braking current，prolong braking time Adjust V/F curve and torque boost Set speed checking restart function Check power source voltage Choose inverter with high-power |
| E009 | Motor overload | Improper V/F curve Power source voltage is too low General motor run at low speed with big load Motor overload protection factor set incorrectly Motor blocked up or load change too suddenly and quickly | Adjust V/F curve and torque boost Check power source voltage Can choose frequency conversion motor for long time low speed run To set motor overload protection factor correctly Check the load |
| E010 | Inverter over heating | Air-path blocked Ambient temperature is too high Fan damaged | To clear air-path or improve ventilation condition Improve ventilation condition, lower carrier frequency Replace the fan |
| E011 | Reserved | Reserved | Reserved |
| E012 | Reserved | Reserved | Reserved |
| E013 | Inverting module protection | Transient overcurrent of the inverter Phase to phase short circuit or earthing short circuit of output 3 phase Air-path blocked or fan damaged Ambient temperature is too high Connecting wire or insert on control board loose Unwonted current wave caused by missing output phase etc. Assistant power supply damaged and drive voltage lacking Unwonted control board | Refer to countermeasure for overcurrent Wiring again To clear air-path or replace the fan Lower ambient temperature Check and connect the wire again Check wiring Look for service from manufacturer or agent |
| E014 | External device failure | Use sudden stop key in non-keypad run mode Use sudden stop key under condition of stall Sudden stop terminal for external failure closed | Look up operation mode Set running parameter correctly Open external failure terminal after external failure is settled |
| E015 | Current detecting circuit failure | Connecting wire or insert on control board loose Assistant power supply damaged Hall component damaged Unwonted amplifying circuit | Check and connect the wire again Look for service from manufacturer or agent |
| E016 | RS485 communication failure | Baud rate set improperly Serial port communication error Failure warning parameter set improperly Upper device doesn’t work | Set Baud rate properly press key to reset，look for service Modify F2.16, F2.17 |
| E017 | Reserved | Reserved | Reserved |
| E018 | Reserved | Reserved | Reserved |
| E019 | Under voltage | Under voltage | check spot input voltage |
| E020 | System disturbance | Serious disturbance Main control DSP read and write wrongly | Reset by pressing key or add mains filter at power Reset by the key-press, look for service |
| E021 | Reserved | Reserved | Reserved |
| E022 | Reserved | Reserved | Reserved |
| E023 | E2 PROM read and write wrongly | Mistake take place when read or write control parameter | Reset by pressing STOP Look for service from manufacturer or agent |
| P.OFF | Under voltage | Under voltage | Check spot input voltage |
