E-42 74 (0x004A) - Cooling Fan Fault
+ Cause: The cooling fan has failed.
+ Advice: The cooling fan needs to be replaced. Contact your Toshiba distributor for assistance.

    E-43 75 (0x004B) - Communication Time-Out (Embedded Ethernet)
+ Cause: The embedded Ethernet communication has timed out.
+ Advice: Check the Ethernet communication equipment and wiring for any issues.

    E-44 76 (0x004C) - Battery Panel Failure
+ Causes:
- No battery is installed.
- The battery level is low.
- Time synchronization within the inverter is lost.
+ Advice:
- Install a battery.
- Replace the battery if it is low.
- Reset the inverter using the operation panel.

    E-45 77 (0x004D) - GD2 Auto-Tuning Error
+ Causes:
- The value of F459 is not fixed.
- The estimated value of F459 is out of the parameter range.
- Upper limit frequency UL(Hz) is set lower than (F481+F482)/100*vL.
+ Advice:
- Adjust the values of F481 and F482, and perform the tuning again.
- Set F480 to 0 and manually set an appropriate value for F459.
- Ensure UL is greater than (F481 + F482) / 100 * vL.

    E-46 78 (0x004E) - Preparation Signal Cut During Position Control
+ Causes:
- Position preparation signal (LI:178/179) turned OFF during position control.
- Near point dog start signal (LI:186/187) turned OFF during zero point recovery when A527=2 or 12.
+ Advice:
- Ensure the position preparation signal is maintained until position control is complete.
- Ensure the near point dog start signal remains active until zero point recovery is complete.

    E-47 79 (0x004F) - Position Detection Upper Limit Excess
+ Causes:
- The current position exceeded the upper limit when A522=1.
- The electronic gear ratio (A524/A525) exceeds the limit.
+ Advice:
- Check the limit range parameters (A518, A519, A520, A521).
- Ensure the ratio of (A524/A525) is within the range of 1/20 to 50.

    E-48 80 (0x0050) - Braking Unit PB7-4132K Internal Fault
+ Cause: An internal error occurred in the Braking Unit PB7-4132K.
+ Advice: Turn the power off and then back on. If the issue persists, contact your Toshiba distributor.

    E-99 88 (0x0058) - Trip for Test
+ Cause: A test trip occurred.
+ Advice: Reset the system if no other problems are found.

    EEP1 18 (0x0012) - EEPROM Fault 1
+ Cause: Fault occurred during internal data writing.
+ Advice: Turn the power off and then back on. If the issue persists, contact your Toshiba distributor.

    EEP2 19 (0x0013) - EEPROM Fault 2
+ Causes:
- Power was turned OFF or a momentary power failure occurred while setting <tyP: Default setting>.
- Fault occurred during internal data writing.
+ Advice:
- Reset <tyP> and if the issue persists, contact your Toshiba distributor.
- Turn the power off and then back on. If the issue persists, contact your Toshiba distributor.

    EEP3 20 (0x0014) - EEPROM Fault 3
+ Cause: Fault occurred during internal data reading.
+ Advice: Turn the power off and then back on. If the issue persists, contact your Toshiba distributor.

    EF2 34 (0x0022) - Grounding Fault
+ Causes:
- Grounding fault occurred in the output wiring or the motor.
- Fault may occur during rapid acceleration/deceleration.
+ Advice:
- Check for grounding faults in the output wiring and motor.
- Increase the acceleration/deceleration time using <ACC/dEC acceleration/deceleration time 1>.

    EPHI 8 (0x0008) - Input Phase Loss
+ Cause: Failure in the input side phase.
+ Advice: Check for any phase failure in the input wiring.

    EPHO 9 (0x0009) - Output Phase Loss
+ Causes:
- Failure in the output side phase.
- Output current is significantly low (less than 8% of the motor's rated current).
+ Advice:
- Check for phase failure in the output wiring.
- If using a PM motor (<F915> = "3", "4"), "EPHO" may occur regardless of <F605> settings. Consider setting <F605> to 0.

    Err2 21 (0x0015) - RAM Fault
+ Cause: Fault in the control RAM, indicating an internal inverter issue.
+ Advice: Contact your Toshiba distributor.

    Err3 22 (0x0016) - ROM Fault
+ Cause: Fault in the control ROM, indicating an internal inverter issue.
+ Advice: Contact your Toshiba distributor.

    Err4 23 (0x0017) - CPU1 Fault A
+ Cause: Control CPU fault, indicating an internal inverter issue.
+ Advice: Contact your Toshiba distributor.

    Err5 24 (0x0018) - Communication Time-Out (RS485)
+ Cause: RS485 communication has timed out.
+ Advice: Check the RS485 communication equipment and wiring for issues.

    Err6 25 (0x0019) - Gate Array Fault
+ Cause: Fault in the gate array, indicating an internal inverter issue.
+ Advice: Contact your Toshiba distributor.

    Err7 26 (0x001A) - Current Detector Fault
+ Cause: Fault in the output current detector, indicating an internal inverter issue.
+ Advice: Contact your Toshiba distributor.

    Err8 27 (0x001B) - Communication Time-Out (Option)
+ Cause: Communication option has timed out.
+ Advice: Check the communication equipment and wiring for the communication option.

    Err9 28 (0x001C) - Panel Disconnection During Run
+ Cause: The cable connecting the inverter and panel was disconnected while running a command from the operation or extension panel.
+ Advice: Check the connection between the inverter and the panel.

    Etn 40 (0x0028) - Auto-Tuning Error
+ Causes:
- Motor parameter does not match the motor characteristic.
- Auto-tuning was executed while the motor was rotating.
- Output frequency did not increase within a few minutes.
+ Advice:
- Set the motor parameters according to the motor characteristic (<vL: Base frequency 1>, <vLv: Base frequency voltage>, <F405: Motor rated capacity>, <F415: Motor rated current>, <F417: Motor rated speed>, etc.).
- Ensure the motor is stopped before performing auto-tuning.
- Ensure the motor is not stopped while the output frequency is rising.

    Etn1 84 (0x0054) - Auto-Tuning Error 1
+ Causes:
- Motor is not connected.
- Something other than the motor is connected.
- In an induction motor, <F417: Motor rated speed> is set incorrectly.
+ Advice:
- Ensure the motor is properly connected.
- Set <F417> according to the motor rating.

    Etn2 85 (0x0055) - Auto-Tuning Error 2
+ Cause: Motor parameter does not match the motor characteristic.
+ Advice: Set the motor parameters according to the motor characteristic (<vL: Base frequency 1>, <vLv: Base frequency voltage>, <F405: Motor rated capacity>, <F415: Motor rated current>, <F417: Motor rated speed>, etc.).