Power unit: Internal fan faulty

What does F30059 mean?

The internal cooling fan of the power unit has failed, indicating it is likely defective. This is a critical condition as the fan is responsible for preventing the power unit from overheating. Continued operation will quickly lead to severe overtemperature faults and potential, irreversible damage to the power unit's electronic components.

• Complete mechanical failure of the fan (e.g., motor winding burnout, seized bearings, broken fan blades).
• Loss of the internal fan's power supply or a fault in its control circuit within the power unit.
• Obstruction (e.g., debris, loose wire) preventing the fan from rotating freely.
• Damage or loose connection to the fan's electrical wiring or connector on the power unit's PCB.
• Failure of the fan speed monitoring circuit within the power unit, falsely detecting a fan failure.

Click steps to track your progress.

1. 1

   Power off the drive and lock out. Visually inspect the internal cooling fan for any physical damage, obstructions, or complete lack of rotation.

2. 2

   Gently attempt to turn the fan blades by hand (with power off) to check for free movement or resistance in the bearings.

3. 3

   Check the fan's electrical connector on the power unit's circuit board to ensure it is securely seated.

4. 4

   Listen carefully for any fan rotation noise immediately after powering on the drive; a complete lack of sound indicates failure.

5. 5

   Replace the internal cooling fan with an original manufacturer's specified spare part, ensuring proper orientation and connection.

6. 6

   After replacement, clear the fault (e.g., by setting P0254 = 1) and monitor internal temperatures (r0035, r0036) during operation.