Hi everyone,

E-20 V/f Control Error
+  Torque processing error.
- Make a service call.

E-21 CPU Processing Error
+  Software processed incorrectly.
- Make a service call.

E-22 Logic Input Voltage Error
+  Incorrect voltage applied to the discrete input terminals.

E-23 Optional Expansion Input Terminal Board 1 Error
+  Optional Expansion Input Terminal Board 1 is defective.

E-24 Optional Expansion Input Terminal Board 2 Error
+  Optional Expansion Input Terminal Board 2 is defective.

E-25 Stop Positioning Retention Error
+  Load movement while stopped.
- F381 setting is too low.
- Encoder malfunction.
- Creep speed is too high.

E-26 CPU2 Fault
+  CPU malfunction.
- Control board malfunction.

E-50/E-51 Sink/Source Setting Error
+  Improperly positioned Sink/Source jumper on the Terminal board or on an option device (see J100 at the Terminal PCB of the ASD).
- Sink/Source configuration is incorrect.

EEP1 EEPROM Fault
+  EEPROM write malfunction.
- Make a service call.

EEP2/EEP3 EEPROM Read Error
+  EEPROM read malfunction.
- Make a service call.

EF1/EF2 (Earth) Ground Fault
+  Ground fault at the motor.
- Ground fault at the output of the ASD.
- Current leakage to Earth Ground.

EPHI Input Phase Failure
+  3-phase input to the ASD is low or missing at the R, S, or T input terminals.

EPHO Output Phase Failure
+  3-phase output from the ASD is low or missing at the U, V, or W output terminals or at the input to the motor.

ERR2 RAM Fault
+  Internal RAM malfunction.
- Make a service call.

ERR3 ROM Fault
+  Internal ROM malfunction.
- Make a service call.

ERR4 CPU Fault
+  CPU malfunction.
- Control board malfunction.
- Make a service call.

ERR5 Communication Error
+  Communication timeout error.
- Communication malfunction.
- Improper or loose connection.
- Improper system settings.

ERR6 Gate Array Fault
+  Main Gate Array is defective.

ERR7 Low-Current
+  Improper Low-Current detection level settings at F609 – F612.

ERR8 Option Device Fault
+  Check installation, connections, and option device manual.

ERR9 Flash Memory Fault
+  Flash memory malfunction.
- Make a service call.

ETN Autotune Error
+  Autotune readings that are significantly inconsistent with the configuration information.
- A non-3-phase motor is being used.
- Incorrect settings at F400 or F413.
- Using a motor that has a significantly smaller rating than the ASD.
- ASD output cabling is too small, too long, or is being housed in a cable tray with other cables that are producing an interfering EMF.
- Motor is running during the Autotune function.

ETN1
+  F402 adjustment required (Motor temperature is too high).
- F410 adjustment required (Motor Constant 1 improperly set).

ETN2
+  F412 adjustment required (Motor Constant 3 improperly set).

ETN3
+  Autotune setting F400 is set to Auto Calculation and there is a problem with the Motor Constant readings.

ETYP Typeform Error
+  Firmware information (typeform) loaded into the Gate Driver board is inconsistent with the device in which the firmware is being used.
- The Gate Driver board has been replaced.
- The Gate Driver board is defective.

None No Errors
+  No active faults.

OC1 Over-Current During Acceleration
+  Over-current during acceleration.
- Improper V/f setting.
- Restart from a momentary power outage.
- ASD starting into a rotating motor.
- ASD/Motor not properly matched.
- Phase-to-phase short (U, V, or W).
- Accel time too short.
- Voltage Boost setting is too high.
- Motor/machine jammed.
- Mechanical brake engaged while ASD is running.
- On ASDs that are 100 HP or less, the ASD current exceeds 340% of the rated FLA during acceleration. On ASDs that are greater than 100 HP, this fault occurs when the ASD current exceeds 320% of the rated FLA during acceleration.

OC1P Overheat During Acceleration

+  Overheat during acceleration.
- Cooling fan inoperative.
- Ventilation openings are obstructed.
- Internal thermistor is disconnected.
- Acceleration time is too short.
- Improper V/f setting.
- ASD or the motor is improperly matched to the application.

+ Toshiba H9 User manual

+ Toshiba H9 Fault index >>

+ Toshiba H9 Fault Codes 1 >>

+ Toshiba H9 Fault Codes 2 >>

+ Toshiba H9 VFD 

+ Toshiba 2 Main page

+ Used VFD Models
+ VFD Main page -

-