Turn the supply tap fully anti-clockwise. Disconnect the inlet hose from the machine, point it into a bucket and open the tap for 3 seconds. You should see a strong, uninterrupted flow. Miele dishwashers require a minimum of 1 bar — low pressure prevents the flow meter impeller from spinning at the speed needed for the sensor to register.

Turn the tap off. Disconnect the inlet hose from the machine. Remove the small mesh filter from inside the inlet port with tweezers, rinse and scrub with a toothbrush to clear limescale. Refit firmly.

With the dishwasher completely unplugged, remove the lower kickplate panel. On Miele dishwashers the flow meter is a small cylindrical or rectangular unit mounted in the water inlet path between the inlet valve and the sump. It has the inlet hose or a short internal hose connected to its inlet port, and a small multi-wire electrical connector. Inspect the body for cracks, corrosion, or limescale deposits around the inlet port.

Disconnect the flow meter from its hose connections carefully — have a towel ready for residual water. Look into the inlet port of the flow meter with a torch. You should see a small plastic paddle wheel (impeller) inside. Gently blow through the inlet — you should feel the impeller spin with very light resistance. If it feels stiff or completely blocked, limescale or a grit particle is jamming it. Flush the flow meter body gently with warm water to clear it.

With the dishwasher unplugged and the flow meter connector disconnected, set a multimeter to resistance and test across the Hall sensor terminals (the signal terminals, not the power supply terminals). Consult Miele service documentation for your specific model for the expected resistance value. An OL reading across all terminal combinations suggests the Hall sensor has failed.

Reconnect the hose and electrical connector firmly. Restore power and water supply. Run a Quick Intensive programme and monitor the fill — the machine should fill normally without displaying F14.