AEG Wash cycle problem

AEG Lavatmat 52810 Machine works fine on the slow wash cycle and normal rinse and spin cycles.

Problem occurs about 1/2 way during the wash cycle, when the drum turns quite fast.

At this point the machine sort of has a 'heart attack'. It jolts a bit and makes a loud squeeking noise - sort of like the squeals of brakes in a car when suddenly push foot hard down on the brakes when driving fast (If this makes sense). Then stops that spin. If left alone, it continues with the cycle. Until the next fast spin during the wash cycle.

All other cycles work normally. No noise from the mchine. No movement of the machine.

The Spin cycle, even on 1200 works with no problems.

The problem only happens during the part of the wash cycle when the drum turns fast - which is slower than the speed of the spin cycle, where there is no problem.

It does this even when I run the cycle without clothes

This problem started suddenly, no changes had been made to where the machine is located or sitting, it had not been moved or knocked.

The machine is stable. Stands on a straight flat surface. As it has been for the past 6 years.

It is an AEG Lavatmat 52810. It is only used once a week, not over loaded, mostly loaded only 3/4 % of capacity with light weight items. Only 600 spin speed option is used.

Once the belt fell off. The belt is in good condition not stretched, worn, torn. The tension of the belt on the things it turns is correct and normal.

At the moment I am using the machine until just before the problematic fast wash turning (about 50 minutes into the washing cycle). Then I switch over from the automatic wash cycle to manually selecting individual the rinse cycle. Then use the drain feature. When that is finished, I then switch over to the individual spin cycle. No problems. Sometimes I don’t use this spin cycle, I take the washing out the machine at the end of the draining.