INVT GD10 Drive Fault Codes List

Complete reference list of INVT Goodrive10 (GD10) mini-drive fault codes. Learn to troubleshoot common errors like OU (Overvoltage), OC (Overcurrent), and reset this economical VFD.

INVT GD10 Fault Codes Reference Table

Use the search bar in the table below to quickly find your specific error code.

Fault Codes Cause & Solution
OC1
Overcurrent
during
acceleration		 Cause:

- The acceleration or deceleration is too fast;
- The voltage of the grid is too low;
- The power of the VFD is too low;
- The load transients or is abnormal;
- The grounding is short circuited or the output is phase loss;
- There is strong external interference;
- The overvoltage stall protection is not open.

Solution:

- Increase the ACC time;
- Check the input power;
- Select the VFD with a larger power;
- Check if the load is short circuited (the grounding short circuited or the wire short circuited) or the rotation is not smooth;
- Check the output configuration;
- Check if there is strong interference;
- Check the setting of related function codes
OC2
Overcurrent
during
deceleration		 Cause:

- The acceleration or deceleration is too fast;
- The voltage of the grid is too low;
- The power of the VFD is too low;
- The load transients or is abnormal;
- The grounding is short circuited or the output is phase loss;
- There is strong external interference;
- The overvoltage stall protection is not open.

Solution:

- Increase the ACC time;
- Check the input power;
- Select the VFD with a larger power;
- Check if the load is short circuited (the grounding short circuited or the wire short circuited) or the rotation is not smooth;
- Check the output configuration;
- Check if there is strong interference;
- Check the setting of related function codes
OC3
Overcurrent
at constant
speed		 Cause:

- The acceleration or deceleration is too fast;
- The voltage of the grid is too low;
- The power of the VFD is too low;
- The load transients or is abnormal;
- The grounding is short circuited or the output is phase loss;
- There is strong external interference;
- The overvoltage stall protection is not open.

Solution:

- Increase the ACC time;
- Check the input power;
- Select the VFD with a larger power;
- Check if the load is short circuited (the grounding short circuited or the wire short circuited) or the rotation is not smooth;
- Check the output configuration;
- Check if there is strong interference;
- Check the setting of related function codes
OV1/OU1
Overvoltage
during
acceleration		 Cause:

- The input voltage is abnormal;
- There is large energy feedback;
- No braking components;
- Braking energy is not open.

Solution:

- Check the input power;
- Check if the DEC time of the load is too short or the VFD starts during the rotation of the motor or it needs to increase the energy consumption components;
- Install the braking components;
- Check the setting of related function codes.
OV2/OU2
Overvoltage
during
deceleration		 Cause:

- The input voltage is abnormal;
- There is large energy feedback;
- No braking components;
- Braking energy is not open.

Solution:

- Check the input power;
- Check if the DEC time of the load is too short or the VFD starts during the rotation of the motor or it needs to increase the energy consumption components;
- Install the braking components;
- Check the setting of related function codes.
OV3/OU3
Overvoltage
at constant
speed		 Cause:

- The input voltage is abnormal;
- There is large energy feedback;
- No braking components;
- Braking energy is not open.

Solution:

- Check the input power;
- Check if the DEC time of the load is too short or the VFD starts during the rotation of the motor or it needs to increase the energy consumption components;
- Install the braking components;
- Check the setting of related function codes.
UV
Bus
undervoltage		 Cause & Solution:

1. An instantaneous power failure occurs.
- Reset the fault

2. The AC drive's input voltage is not within the permissible range.
- Adjust the voltage to normal range.

3. The bus voltage is abnormal.
- Replace the AC drive.

4. The rectifier bridge, the pre-charge resistor, the drive board or the control board are abnormal.
- Replace the AC drive.
OL1
Motor
overload		 Cause:

- The voltage of the power supply is too low;
- The motor setting rated current is incorrect;
- The motor stall or load transients is too strong.

Solution:

- Check the power of the supply line;
- Reset the rated current of the motor;
- Check the load and adjust the torque lift.
OL2
VFD
overload		 Cause:

- The acceleration is too fast;
- Reset the rotating motor;
- The voltage of the power supply is too low;
- The load is too heavy;
- The motor power is too large, and the power of the VFD is too small.

Solution:

- Increase the ACC time;
- Avoid the restarting after stopping;
- Check the power of the supply line;
- Select a VFD with bigger power;
- Select a proper motor.
OH1
Rectifier
module
overheat		 Cause & Solution:

1. The ambient temperature is too high.
- Lower the ambient temperature.

2. The ventilation is clogged.
- Clean the ventilation.

3. The fan is damaged.
- Replace the cooling fan.
OH2
Inverter
module
overheat		 Cause & Solution:

1. The ambient temperature is too high.
- Lower the ambient temperature.

2. The ventilation is clogged.
- Clean the ventilation.

3. The fan is damaged.
- Replace the cooling fan.
EF
External
Fault		 Cause: SI external fault input terminals action. External fault comes when the drive has detected an issue with an external control circuit or device connected to it. This means the drive has detected an issue with an external device or control circuit connected to it. Unlike error codes specific to internal drive components, the EF code is more general and can be triggered by various external factors.

Solution:

1. An alarm function of the external equipment was activated.
- Inspect external equipment operation.
- Remove the cause of the alarm that occurred.

2.  Connection has been performed incorrectly.
- Check if the wire for the external alarm signal is correctly connected to the terminal to which the "Alarm from external equipment" has been assigned.
- Connect the wire for the alarm signal correctly.

3. Incorrect settings.
- Check if the "Alarm from external equipment" has not been assigned to an unassigned terminal.
- Correct the assignment.
CE
RS485
communication
Fault		 Cause:

- The baud rate setting is incorrect;
- Fault occurs to the communication wiring;
- The communication address is wrong;
- There is strong interference to the communication.

Solution:

- Set proper baud rate;
- Check the communication connection distribution;
- Set proper communication address;
- Chang or replace the connection distribution or improve the anti-interference capability.
EEP
EEPROM
operation
fault		 Cause:

- Error of controlling the write and read of the parameters;
- Damage to EEPROM.

Solution:

- Press STOP/RST to reset;
- Change the main control panel.
PIDE
PID
feedback
offline
fault		 Cause:

- PID feedback offline;
- PID feedback source disappear.

Solution:

- Check the PID feedback signal;
- Check the PID feedback source.
END
Running
time
reached		 Cause: The actual running time of the VFD is above the internal setting running time.

Solution: Ask for the supplier and adjust the setting running time.
OL3
Electrical
overload		 Cause: The VFD will report overload pre-alarm according to the set value.

Solution: Check the load and the overload pre-alarm threshold.
LL
Electronic
underload
fault		 Cause: The VFD will report the underload pre-alarm according to the set value.

Solution:

1. Check the load and the underload pre-alarm point.
PoFF
System
power off 		 Cause: System power off or low DC voltage.

Solution: Check the grid.

 

How to Read GD10 Faults via Keypad

The GD10 interface is streamlined. Diagnostics are performed primarily through the built-in LED display and the SHIFT key.

  • Toggle Display Data: When the drive stops due to a fault, the code flashes. Press the >> (SHIFT) key to scroll through the drive’s status at the time of the trip (Frequency, Output Current, DC Bus Voltage).
  • Fault History (P07 Group): Even this mini drive stores historical data.
    • P07.27: The most recent fault code.
    • P07.28: The second most recent fault code.
    • P07.33 – P07.40: Detailed operating data (Amps, Volts, Terminal Status) recorded at the exact moment the last fault occurred.

Frequently Asked Questions (FAQ)

Q: Why do I get “OU” (Over Voltage) errors on Deceleration?

A: The GD10 is a small drive with limited DC bus capacitance. OU1, OU2, or OU3 usually happens if the Deceleration Time (P00.12) is set too short for the inertia of the load.
Fix: Increase the deceleration time. If the application requires fast stopping, the GD10 may not be suitable unless the specific model supports a braking unit (often limited on micro sizes).

Q: How do I reset the GD10?

A:
1. Press the red STOP/RST button on the keypad.
2. Power cycle the drive (turn off, wait for lights to go out, turn on).
3. Use a digital input (S1-S4) configured for “Fault Reset” (Function 9 in group P05).

Q: What is the difference between OC and OL1?

A:
OC (Overcurrent): A sudden spike in current, often caused by a short circuit, ground fault, or mechanically jammed motor. This happens instantly.
OL1 (Motor Overload): The motor has been drawing high current (but not short-circuit levels) for an extended period, causing the thermal protection to trip. This suggests the motor is undersized for the work it is doing.

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