Miele W1903 User Manual page 53

W1900 Series Clothes Washers
F6: Insufficient Water Intake
Check water supply is fully opened.
Clean the Water Intake Filters.
Check supply water pressure.
Check Intake Valves - as necessary.
Check / adjust the appliance programming.
F7: Insufficient Drainage
Check filter for blockages.
Check Drain Hose.
Check Drain supply (at install location) for proper draining.
Check Drain Pump (mechanical / electrical).
Check Non-Return Valve.
F8: Spin Speed Not Maintained
During the last 2 seconds of the final spin, the spin speed must be > 400
rpm. If this is not the case, the fault code F8 is then stored.
Minimize imbalances by opening the door & redistributing the laundry
by hand. Repeat the spin.
Note:
With small load quantities, it may be necessary to add additional items as
ballast.
F9: NV RAM (non-volatile RAM) Fault
Perform the "Determining Which Electronic Unit Requires
Replacement (Electronic Test Procedure)" – Refer to Section 5.13.
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Technical Information