Miele Dishwasher Error Code F87 — Inlet Valve Fault / Water Overflow Risk
What this means
The F87 error code on Miele dishwashers indicates the control board has detected that water continues to flow into the dishwasher after the inlet valve was commanded to close. This creates an overflow risk. The inlet valve solenoid may be stuck open, debris may be preventing the valve from sealing, or the valve's electrical connection may be faulty.
Alternate codes: F 87
Step-by-step fix
4 stepsTurn off the water supply immediately
Close the water shut-off valve under the sink that feeds the dishwasher. This stops additional water from entering and prevents potential flooding.
This error should be addressed promptly — a stuck-open inlet valve can flood your kitchen.
Power cycle the dishwasher
Turn off the circuit breaker for 5 minutes. Restore power and slowly open the water supply valve. Start a short cycle and listen carefully for the inlet valve to click open and then close. If water continues to trickle in after the tub is full, the valve is stuck.
Place a towel under the dishwasher during this test in case of overflow.
Inspect the inlet valve for debris
Turn off the water and breaker. Disconnect the supply hose from the inlet valve. Check the valve screen for debris that could prevent the solenoid from sealing fully. Also inspect the valve body for cracks or damage.
Even a tiny piece of sediment caught in the valve seat can prevent it from closing completely.
Replace the water inlet valve
If cleaning the screen does not resolve the issue, the valve solenoid is likely stuck or worn. Replace the entire inlet valve assembly. Reconnect the supply hose and electrical connector. Test by running a cycle.
When installing the new valve, use a new hose washer to ensure a drip-free connection.
When to call a professional
If you are uncomfortable working with water supply connections inside the dishwasher, a technician can replace the inlet valve safely.
Information compiled from manufacturer service manuals, official troubleshooting documentation, and appliance repair industry resources. This guide is for informational purposes only — always consult a qualified technician for complex repairs.
Learn more about our sourcesParts you may need
Water Inlet Valve
Part #10455020 · $40–$80
If the valve does not close fully after cleaning
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