Miele Dishwasher Error F70

DIY Fix Check for leaks and clear base water

1. Turn off and disconnect the dishwasher from power.
2. Inspect around/under the dishwasher for signs of external leaks.
3. Remove kick/splash panel to access dishwasher base tray.
4. If water is present in the base tray, carefully absorb and remove it with towels or a sponge.
5. Allow base to dry fully before reconnecting power.

DIY Fix Basic checks to reduce false triggers

1. Check door seal for proper closing and intact gasket.
2. Inspect hoses and connections for signs of leaks or moisture.
3. Ensure dishwasher filters are clean and free of debris.
4. Avoid over‑sudsing by using correct detergent and amount.

Technician Only Inspect and repair waterproof/float sensor system

1. Disconnect power and water supply.
2. Remove appropriate panels to access the base tray and float/leak sensor.
3. Inspect the float/leak sensor hardware for proper movement and electrical continuity.
4. Check wiring harnesses and connectors for corrosion or damage.
5. Replace faulty float/leak sensor or associated wiring as needed.
6. Verify that the base tray and drainable channels are free of debris and can drain properly.

Parts needed: Leak/float sensor assembly, Wiring harness/connector, Base tray/drain components (if obstructed)

Technician Only Check and address drainage pump activity related to waterproof trip

1. Verify drain pump operation and clear any blockages.
2. Inspect drain hoses for kinks, clogs, or improper installation.
3. Test the pump for proper electrical function and replace if defective.

Parts needed: Drain pump, Drain hose