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-39
    Problem: Auto-tuning error (PM motor)
    Possible Causes:
+ During auto-tuning (related parameters P−6, [F402, F408, etc.), the current of the permanent magnet motor exceeded the limit.
+ The inductance of the permanent magnet motor is too low.
    Solutions:
+ Auto-tuning for this motor is not performed; please measure the inductance with an LCR meter, etc.

Alarm Information:

    Error Code: OFF
+ Problem: ST (assigned standby function) terminal OFF
+ Possible Causes: The ST-CC (or P24) circuit is open.
+ Solutions: Close the ST-CC (or P24) circuit.

    Error Code: n0UFF
+ Problem: Low voltage in the main circuit
+ Possible Causes: The supply voltage between R, S, and T is at low voltage.
+ Solutions: Measure the supply voltage of the main circuit. If the voltage is at a normal level, the inverter requires repair for malfunction.

    Error Code: rtry
+ Problem: Retry operation
+ Possible Causes: Internal communication error. The inverter is in retry process. A momentary pause occurred. Motor speed is being detected.
+ Solutions: The inverter automatically restarts, pay attention to the machine as it may suddenly restart.

    Error Code: Err1
+ Problem: Frequency point setting error alarm
+ Possible Causes: The frequency setting signals are set too close to each other at points 1 and 2.
+ Solutions: Separate the frequency setting signals at points 1 and 2.

    Error Code: trpC
+ Problem: Trip clearing command acceptable
+ Possible Causes: This message is displayed when the STOP button is pressed while an error code is displayed.
+ Solutions: Press the STOP button again to clear the trip.

    Error Code: E StOP
+ Problem: Emergency stop command acceptable
+ Possible Causes: The operation is stopped using the operation panel during automatic control or remote control.
+ Solutions: Press the STOP button for emergency stop. Press another button to cancel the emergency stop.

    Error Code: H i t d I
+ Problem: Setting error alarm / An error code and alarm are shown twice.
+ Possible Causes: A setting error is found while reading or writing data.
+ Solutions: Check if the setting is correct.

    Error Code: H E r D1 End
+ Problem: First/last data item display
+ Possible Causes: The first and last data item in the AUH data group is displayed.
+ Solutions: Press the MODE button to exit the data group.

    Error Code: db
+ Problem: DC braking
+ Possible Causes: DC braking operation is ongoing
+ Solutions: If there is no problem, the message will disappear after a few seconds. Note 1)

    Error Code: Er 6
+ Problem: Excessive digit output
+ Possible Causes: The number of digits, such as frequencies, is more than 4. (Higher digits take priority.)
+ Solutions: Reduce the frequency by increasing the unit of F102F102.

    Error Code: Step 2
+ Problem: Instantaneous power interruption deceleration stop application mode prohibition
+ Possible Causes: The deceleration stop prohibition function set with F302F302 (instantaneous power interruption sustain operation) is enabled. The automatic stop function selected with F656F656 is enabled.
+ Solutions: Reset the inverter or enter an operation signal again to restart the operation.

    Error Code: init
+ Problem: Parameters are reset to default values
+ Possible Causes: Parameters are being reset to default values.
+ Solutions: If the message disappears after a while, it is normal. If it does not disappear, check the current event.

    Error Code: A-01
+ Problem: Point setting alarm 1
+ Possible Causes: There are some settings for the lead wire position parameter for the expected 0-0 in P−2P−2 state, F196−0, F198.
+ Solutions: Set the points to different values.

    Error Code: A-02
+ Problem: Point setting alarm 2
+ Possible Causes: In P−1P−1 state, the V/Hz slope is too flat.
+ Solutions: Set the V/Hz slope as flat.

Note 1: If the DC braking (DB) function is assigned using input terminal function 22 or 23, it is normal for "db" to disappear when the circuit between the terminal and CC (or P24) is opened.


Error Code: A-05
    Problem: Output frequency upper limit
    Possible Causes: An attempt was made to operate at a frequency higher than 10 times the base frequency (e.g., F100F100).
    Solutions: Operate within 10 times the base frequency.

Error Code: A-07
    Problem: Operation panel key alarm
    Possible Causes: RUN or STOP key was pressed for more than 20 seconds.
    Solutions: Check the operation panel.

Error Code: A-27

    Problem: Terminal block connection alarm
    Possible Causes: CN1 or CN2 connection terminal block is faulty.
    Solutions: Inspect the terminal block for faults.

Error Code: A-28

    Problem: SW1 terminal alarm
    Possible Causes: There is a mismatch between SW2 and parameter F140 settings after changes.
    Solutions: Match SW2 and parameter F140 settings; turn the power supply OFF and ON after these changes.

Error Code: Retn

    Problem: Auto-tuning
    Possible Causes: Auto-tuning is in process.
    Solutions: If the message disappears after a few seconds, it is normal.

Error Code: A-18

    Problem: Analog signal cable disconnection
    Possible Causes: The signal coming through VC is below the analog signal detection level, one or more settings of F693 and F694.
    Solutions: Check cables for disconnection and verify the setting signal or value of F693 and F694.

Error Code: Fire

    Problem: Forced operation
    Possible Causes: During forced speed operation, "FIRE" and operation frequency (F694) alternately appear on the screen.
    Solutions: It is normal for the alarm to exit once the forced speed operation is complete.

Error Code: PASS/FAIL

    Problem: Password verification result
    Possible Causes: After password setting (F730), the password was entered into F731 (password verification).
    Solutions: If the password is correct, PASS is displayed; if incorrect, FAIL is displayed.

Error Code: EASY/FULL
    Problem: Easy setting mode / Standard setting mode display transition
    Possible Causes: The EASY button was pressed in the standard monitoring mode.
    Solutions: When EASY is displayed, the output mode is easy setting mode. When FULL is displayed, it is standard setting mode.

Error Code: SET
    Problem: Area setting input requirement
    Possible Causes: Area setting has not been entered yet. The inverter is powered for the first time.
    Solutions: Set an area using the setting dial. Refer to section 3.1.

Error Code: nErr
    Problem: No past trip
    Possible Causes: After resetting past trips, there is no new past trip record.
    Solutions: Normal operation.

Error Code: - - - -
    Problem: No detailed information on past trip
    Possible Causes: Detailed information on past trips was deleted by pressing the center of the setting dial while blinking.
    Solutions: Bring it back by pressing the MODE button.

Pre-Alarm Screen

If two or more problems occur at the same time, one of the following alarms appears and blinks:

    P: Overcurrent alarm
    O: Overvoltage alarm
    OL: Overload alarm
    H: Overheating alarm
    C: Communication error

These blinking alarms P, O, OL, H, C are displayed in this order from left to right.

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