Cause : Fan faulty comes when the cooling fan within drive malfunctions or fails to operate properly. If the fan fails or is not working correctly, the drive can overheat, leading to further faults, reduced lifespan, or even damage to internal components like IGBTs or capacitors.

"Fan fault" in "drive" indicate a malfunction in the internal cooling fan or an issue with its operation. The cooling fan is critical for maintaining the drive's temperature by dissipating heat generated during operation.

Troubleshooting Steps for Fan Fault in Drives:

1. Inspect the Fan for Blockage or Damage:

   • Check the fan for any obstructions, such as dust, dirt, or debris, that may prevent it from spinning. Clean the fan if necessary.
   • Visually inspect the fan for physical damage, such as broken blades or loose components.

2. Test Fan Operation:

   • Power on the drive and observe the fan’s operation. If the fan doesn’t spin or operates at a slower speed, it may be malfunctioning.
   • You can manually test the fan by applying power directly to the fan to see if it operates normally. If it doesn’t work when powered directly, the fan needs to be replaced.

3. Check for Loose or Damaged Wiring:

   • Inspect the wiring that connects the fan to the drive’s power supply. Ensure that all connections are tight and that there are no broken or frayed wires.
   • If the wiring is damaged, repair or replace it to restore fan operation.

4. Monitor Drive Temperature:

   • Check the drive’s internal temperature readings using the display or control panel. If the drive is running hot, it could be due to the fan not operating properly.
   • Compare the temperature to the manufacturer’s specified safe operating range.

5. Verify Fan Power Supply:

   • Use a multimeter to check if the fan is receiving the correct voltage. If the fan is not receiving power, there may be an issue with the drive’s internal power supply or fan controller.

6. Test Temperature Sensors:

   • Some drives rely on temperature sensors to activate the fan when needed. If the temperature sensor is faulty, it may not activate the fan even if the drive is overheating.
   • Check the sensor data to ensure accurate readings. If the sensor is faulty, replace it.

7. Check Fan Control Circuitry:

   • If the fan’s power supply and motor are working but the fan still doesn’t operate correctly, the problem could be with the fan control circuit in the drive. This requires more advanced diagnostics and may need professional service.

8. Replace the Fan:

   • If the fan is defective or damaged, it must be replaced.