Miele Dishwasher Error Code F8

F8 indicates a water inlet fault where the dishwasher's flow meter detected too few pulses by the end of a fill step, meaning not enough water entered the tub. Miele dishwashers use a pulse-counting flow meter to measure water volume during filling, and when that count falls short of the expected value, the control board stops the cycle and displays F8. The fault can stem from supply restrictions, a clogged filter, a kinked hose, or a failing flow meter or inlet valve.

The dishwasher will not complete a wash cycle while F8 is active, so continued use is effectively prevented until the fault is cleared. Running the machine in a faulted state is not recommended, as operating without adequate water could damage components like the wash pump. Diagnose and resolve the underlying cause before resuming normal use.

Resetting the dishwasher by canceling the program or cutting power may temporarily clear the displayed code, but F8 will return if the underlying water supply problem has not been corrected. A reset is useful for confirming whether the fault was a one-time event, such as a momentary pressure drop, or a consistent problem. If F8 reappears on the next fill cycle, proceed with a thorough diagnostic of the inlet system.

Some causes of F8 are straightforward DIY repairs. Checking and clearing a clogged inlet filter screen, straightening a kinked supply hose, and confirming the shut-off valve is fully open require no special tools or parts. However, replacing a flow meter or water inlet valve involves disconnecting water supply lines and electrical connectors, which is best handled by a technician if you are not comfortable with appliance repair.

If the fault is caused by a blocked filter or a kinked hose, there may be no parts cost at all, just a service call fee ranging from around $80 to $150 depending on your location. Replacing a flow meter or inlet solenoid valve typically adds $50 to $200 in parts, with total repair costs commonly falling in the $150 to $400 range when labor is included. Miele parts tend to be priced at the higher end compared to other brands.