Hi everyone,
    When a problem occurs, diagnose according to the table below. If parts replacement is necessary or the problem cannot be resolved with the solutions listed in the table, contact your Toshiba distributor.

Error Code: E
    Problem: Emergency stop
    Possible Causes:
+ A stop command was entered from the control panel or remote input device during automatic or remote operation.
    Solutions:
+ Reset the inverter.
+ If an emergency stop signal has been entered, reset after releasing this signal.

Error Code: EEP1
    Problem: EEPROM error 1
    Possible Causes:
+ Data writing error occurs.
    Solutions:
+ Turn off the inverter and turn it back on. If the error persists, contact your Toshiba distributor.

Error Code: EEP2
    Problem: EEPROM error 2
    Possible Causes:
+ Power was cut off during the EEP process, and data writing was interrupted.
+ Errors occurred while writing various data.
    Solutions:
+ Temporarily turn off the power and turn it back on, then try the EEP process again.
+ Rewrite the data. If the error continues, contact your Toshiba distributor.

Error Code: EEP3
    Problem: EEPROM error 3
    Possible Causes:
+ Data reading error occurred.
    Solutions:
+ Turn off the inverter and turn it back on. If the error persists, contact your Toshiba distributor.

Error Code: Erc1
    Problem: Main unit RAM error
    Possible Causes:
+ Control RAM is faulty.
    Solutions:
+ Contact your Toshiba distributor.

Error Code: Erc2
    Problem: Main unit ROM error
    Possible Causes:
+ Control ROM is faulty.
    Solutions:
+ Contact your Toshiba distributor.

Error Code: Erc3
    Problem: CPU error 1
    Possible Causes:
+ Control CPU is faulty.
    Solutions:
+ Contact your Toshiba distributor.

Error Code: Erc5
    Problem: Communication error
    Possible Causes:
+ Communication was interrupted.
    Solutions:
+ Check the status of the connection cable.

Error Code: Erc9
    Problem: Remote control panel connection error
    Possible Causes:
+ An optional unit has failed.
+ After the RUN signal was enabled with the RUN button on the remote control panel, the connection was lost for 10 seconds or longer.
    Solutions:
+ If this error is displayed, press the STOP button before resetting.
+ Set the external signal "RY" to 0 (disable).
+ Check the cable status.

Error Code: Uc
    Problem: Low current operation error
    Possible Causes:
+ Output current dropped to low current detection level during operation.
    Solutions:
+ Check the F100 (low current detection level) setting, F616 (detection level), and F617 (detection time) settings.
+ If the error persists, contact your Toshiba distributor.

Error Code: UP
    Problem: Low voltage error (main circuit)
    Possible Causes:
+ Input voltage (main circuit) is too low.
    Solutions:
+ Enable F710.
+ Take measures to temporarily reduce the load (F602 = 0). Select regenerative power restart control F302 (sustain control) and F301 automatic restart.

Error Codes: Etn 0, Etn 1, Etn 2, Etn 3
    Problem: Auto-tuning error
    Possible Causes:
+ Motor parameters UL, UH, [F405, F415, F414UL, UH, [F405, F415, F414] are not set correctly.
+ A motor of 2 classes or less capacity is used for the inverter.
+ Output cable is too long.
+ The inverter is used for a load other than three-phase induction motors.
+ Motor is not connected.
    Solutions:
+ Set the parameters in the left column according to the motor nameplate and perform auto-tuning again.
+ Set the F416F416 parameter to 70% of the preset value and perform auto-tuning again.
+ Connect the motor.
+ Check if the secondary magnetic contactor is open.
+ Perform auto-tuning again after rotation or a stop.
+ Select a higher power range driver (1 class higher driver is recommended).

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