Option Card Faults (Port A)
oFA00: Option Card Incompatibility

    - Issue: The option card is not compatible with the drive.
    + Solution: Use an option card that is compatible with the drive.

oFA01: Option Card Replacement Needed

    + Solution: Replace the option card.

oFA03: Option Card Self-Diagnostic Error

    + Solution: Check the option card for any issues and replace if necessary.

oFA04: Memory Write Error on Option Card

    + Solution: There might be an issue with writing to the option card memory. Check and replace the card if needed.

oFA30 to oFA43: Communication ID Error

    - Issue: There is a communication ID error with the option card.
    + Solution: Check if the option card or hardware is damaged and replace the option card. Consult with OYMC or an OYMC representative if needed.

Drive Overheat Issues
oH: Heatsink Overheat

    - Issue: The temperature of the heatsink has exceeded the set value (90-100°C).
    + Solution:
    - Check and ensure the surrounding temperature is within drive specifications.
    - Improve air circulation within the enclosure panel.
    - Install a fan or air conditioner to cool the area.
    - Remove any heat-producing objects near the drive.
    - If the load is too heavy, decrease it and lower the carrier frequency (C6-02).
    - If the internal cooling fan is stopped, replace it and reset the cooling fan maintenance parameter (o4-03 = "0").

oH1: Overheat 1 (Heatsink Overheat)

    - Issue: The temperature of the heatsink has exceeded the set value (100-110°C).
    + Solution: Similar to the solution for oH, with additional emphasis on checking and managing the surrounding temperature and load.

Motor Overheat Alarms
oH3: Motor Overheat Alarm (PTC Input)

    - Issue: The motor overheat signal has exceeded the alarm detection level.
    + Solution:
    - Check the load size, acceleration/deceleration times, and cycle times.
    - Decrease the load and adjust the acceleration and deceleration times.
    - Adjust the preset V/f pattern (E1-04 through E1-10) by reducing E1-08 and E1-10.
    - Ensure the motor's cooling system is functioning properly and repair or replace it if needed.

oH4: Motor Overheat Fault (PTC Input)

    - Issue: The motor overheat signal has exceeded the fault detection level.
    + Solution: Similar to the solution for oH3, with an emphasis on ensuring the motor's cooling system is operating normally and adjusting the load and V/f pattern as needed.

Drive Overload Issues
oL1: Motor Overload

    - Issue: The electrothermal sensor has triggered overload protection.
    + Solution:
    - Reduce the load if it's too heavy.
    - Increase the acceleration and deceleration times (C1-01 through C1-08).
    - If the drive is overloaded at low speeds, consider increasing the motor capacity or using a motor specifically designed to operate with the drive.

oL2: Drive Overload

    - Issue: The thermal sensor of the drive has triggered overload protection.
    + Solution:
    - Reduce the load if it's too heavy.
    - Increase the settings for the acceleration and deceleration times.
    - If the drive capacity is too small, replace the drive with a larger model.

oL3: Overtorque Detection 1

    - Issue: The current has exceeded the set value for torque detection for longer than the allowable time.
    + Solution:
    - Check the settings of parameters L6-02 and L6-03.
    - If there is a fault on the machine side, check the status of the load and remove the cause of the fault.

oL4: Overtorque Detection 2

    + Solution: Similar to the solution for oL3, with a focus on checking and adjusting the parameters related to torque detection.

oL7: High-Slip Braking Overload

    - Issue: The output frequency stayed constant for longer than the set time during high-slip braking.
    + Solution:
    - Reduce deceleration times for applications not using high-slip braking.
    - Use a braking resistor to shorten deceleration time.
    - Increase the high-slip braking overload time parameter (n3-04).