If the washing machine makes noise when spinning, the cause may be one of the following:

• Defective drum bearings will cause a knocking or howling metallic sound, depending on how worn out the bearings are. Defective bearings can also cause dark spots (rust/oil deposits) on the clothes. You can purchase new bearings for your washing machine here.
• Defective shock absorbers will often cause a knocking sound (as with defective drum bearings). Most shock absorbers are friction dampers, which work via friction between tube and piston. Loose shock absorbers cause the machine's suspension to not work, and this will also tear on the bearings. Buy shock absorbers for your washing machine here.
• Noise during centrifugation can also be caused by a clogged filter or a foreign body in the pump housing. Either can result in water not being drained quickly enough. Most washing machines have a fail-safe device which prevents the washing machine from spinning with too much water. In some cases, when the water won’t drain quickly enough, however, you may find that the machine spins with too much water, which causes the machine to bounce and make noise as a result.
• Foreign objects in the washing machine, e.g., a pen, a screw or a bra hanger, will often result in noise. You can remove foreign objects through the hole at the sump hose or alternatively through the hole in which the heating element sits. However, be especially aware that if you remove foreign objects through the hole in which the heating element is mounted, the heating element may be difficult or impossible to reinsert, and you may have to replace it. You can find a new heating element here.
• Loose components could result in noise during spinning. Loose components could, for example, be the counterweight, which can move during spinning and create noise - check whether the counterweight is clamped tightly enough and whether rubber washers have been fitted to shock absorb spinning.
• The error may be due to an imbalance in the machine or an overloaded machine. Either can cause the machine to bounce. Imbalance can occur when washing larger items - e.g., when washing a duvet cover, where the clothes clump together - or it can occur when washing too few textiles, which absorb extra water and thereby become extra heavy when soaked - e.g., when washing a pair of jeans or when washing a bathmat.