Siemens
Cooling Fan Wear or Temperature Sensor Misread
Siemens charger’s internal fan runs loudly or continuously, even at low charging currents or when idle.
Advertisements
Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
Advertisements
Possible Causes
Worn fan bearings causing noise, Dust buildup restricting airflow, Faulty temperature sensor reading high, Firmware bug keeping fan at high speed
How to Fix / Troubleshooting
Safety first: Disconnect power before touching internal components.
- Clean vents: Remove dust from external vents with a soft brush or vacuum. Do not use water.
- Inspect fan: With cover removed and power briefly applied, observe the fan for wobble or unusual noise. Replace if noisy or vibrating.
- Check temperature: Ensure the charger is not installed in a hot, enclosed space. Measure ambient temperature near the unit.
- Firmware update: Install the latest Siemens firmware, which may improve fan control algorithms.
If the fan still runs excessively with normal temperatures, the temperature sensor or control logic may be faulty and require service.
Advertisements
Repair Difficulty
Medium
3/5
Required Part
Cooling Fan / Temperature Sensor
Check Price on Amazon
We may earn a commission from links on this page.
Advertisements