Washer makes loud banging or knocking noises during spin

Safety first: Keep clear of the machine while it is violently vibrating; unplug it before inspection.

Steps to reduce noise and vibration:

• Check load distribution: Stop the cycle, open the door when safe, and redistribute laundry. Avoid washing single heavy items alone.
• Verify installation: Ensure all transport bolts were removed from the rear of the washer after delivery. If still present, remove them according to the Siemens installation guide.
• Level the machine: Adjust the feet so the washer is stable and does not rock. Use a spirit level.
• Inspect suspension: Remove the top cover and gently move the drum up and down. Excessive bouncing or clunking suggests worn dampers or broken springs, which should be replaced in pairs with Siemens-compatible parts.

When to call a technician: If springs or dampers are broken, or if the tub contacts the cabinet, professional replacement is advisable.