Zanussi ZWF16070W1 faulty - diagnosis?

This thread was marked as solved. Here's a summary of the problem and the fix, generated from the discussion below.

Zanussi ZWF16070W1 intermittent no-drum movement, likely motor brushes

The problem

Zanussi ZWF16070W1 washing machine filled and drained normally and the door locked/unlocked, but intermittently stopped after filling with no drum movement in either direction. Spin was also inconsistent, sometimes working and sometimes not. A slight low vibration/grinding/crackling noise was reported when it did run. The displayed fault code was E41, although the door lock appeared to operate correctly.

Likely cause

The strongest supported diagnosis in the discussion is worn carbon brushes in the motor. The crackling noise and intermittent drum operation were cited as consistent with this. Although E41 was reported, the discussion did not confirm a door interlock fault.

What fixed it

The accepted advice was to check the motor for excessive sparking from the rear while it is turning, as this would support a diagnosis of worn carbon brushes. The thread does not confirm that any repair was carried out or that brushes were replaced.

Checks to try

• Door lock/unlock operation checked and reported working
• Multimeter checks on door latch pins reported as fine
• Fault code E41 reported
• Motor advised to be observed from the back for excessive sparking when turning

Parts or tools mentioned

• Carbon brushes
• Multimeter