I have looked at the above machine which went into anti-flood due to water in the base.
Looking at the build up of slime in the tray it appears that this has been filling gradually over time.
I dried and cleaned the base tray then run a test but there is no sign of water entering the tray. The inside of one of the overflow tubes clipped to the base of the sump had a small drop of water inside. Door seals appear to be OK.
The PNC for this machine is 911539114/01 the pressure switch is mounted directly to the left of the sump so I assume the modification isn’t applicable to this one.
Is there anything I need to check that could be the cause of a slow leak into the base?