The F14 error on your Miele Dishwasher means there is a water intake problem, specifically that the appliance is detecting insufficient water flow or pressure into the machine. This issue prevents your dishwasher from filling properly and completing the wash cycle.

Error code F14
Meaning Water intake fault – insufficient water supply or flow issue
Severity Medium — Dishwasher won’t operate until resolved
Time to fix 15–45 minutes
Tools needed Adjustable wrench, bucket, flashlight, needle-nose pliers

What the F14 error means

The F14 error code indicates that your Miele dishwasher is not receiving adequate water during the fill cycle. The dishwasher’s control system monitors water intake through flow sensors and pressure switches, and when the expected amount of water doesn’t enter the machine within the programmed time frame, it triggers this error. This is a safety feature that prevents the dishwasher from attempting to run a cycle without sufficient water, which could damage the circulation pump and heating element.

Common causes

  • Water supply valve turned off or not fully open
  • Kinked or blocked inlet hose restricting water flow
  • Clogged inlet filter screen at the water valve connection
  • Low household water pressure (below 20 PSI minimum requirement)
  • Faulty water inlet valve that won’t open properly
  • Defective flow meter or pressure switch giving false readings

How to fix the F14 error

  1. Check the water supply valve: Locate the shut-off valve under your sink or behind the dishwasher. Turn it fully counterclockwise to ensure it’s completely open. Sometimes these valves are accidentally turned off during plumbing work or can become partially closed over time, restricting water flow to the dishwasher.
  2. Inspect and straighten the inlet hose: Pull the dishwasher out slightly and check the water supply hose running from the wall to the machine. Look for any kinks, bends, or crimps that could restrict water flow. Straighten any kinks carefully and ensure the hose has a gentle curve without sharp bends.
  3. Clean the inlet filter screen: Turn off the water supply valve and disconnect the inlet hose from the back of the dishwasher (have a bucket ready for water spillage). Inside the water inlet valve connection, you’ll find a small mesh screen filter. Remove it carefully with needle-nose pliers and rinse it thoroughly under running water to remove any sediment, mineral deposits, or debris. Reinstall the clean filter and reconnect the hose.
  4. Verify household water pressure: Test your water pressure by turning on a nearby faucet fully. If water flow seems weak throughout your home, you may have a pressure issue. Miele dishwashers require a minimum water pressure of 20 PSI and maximum of 145 PSI. Contact a plumber if you suspect inadequate water pressure, or check your home’s pressure regulator if you have one.
  5. Test the water inlet valve: If all previous steps check out, the inlet valve itself may be faulty. With the dishwasher powered off and water supply disconnected, access the valve (typically located at the bottom left of the machine). Check for visible damage or mineral buildup. The valve should click when it receives power—if it’s silent or doesn’t open when activated, it needs replacement. Replacement Miele inlet valves cost $50–$120.
  6. Reset the dishwasher: After addressing any issues found, turn off the dishwasher by pressing the power button or switching off the circuit breaker for 5 minutes. This resets the control board. Restore power, start a new cycle, and monitor whether the F14 error clears. If the error persists after all checks, the flow meter or pressure switch may be defective and require professional diagnosis.

FAQ

Can I use my Miele dishwasher with the F14 error showing?
No, you cannot use your dishwasher when the F14 error is active. The machine has detected a water supply problem and will not run a cycle until the issue is resolved. Attempting to override this error could damage internal components like the circulation pump or heating element, which require water to function safely.

How much does it cost to fix a Miele dishwasher F14 error?
If the issue is simply a closed valve, kinked hose, or clogged filter, the repair costs nothing except your time. If you need to replace the water inlet valve, the part costs $50–$120 plus $150–$250 for professional installation if you hire a technician. Total professional repair costs typically range from $200–$370, though many homeowners can complete this repair themselves.

Why does my Miele dishwasher show F14 when my water supply is fine?
If your water supply, hoses, and filters are all clear, the F14 error may be caused by a faulty water inlet valve that won’t open electrically, a defective flow meter that incorrectly reports low water intake, or a malfunctioning pressure switch. These components may need testing with a multimeter or replacement. Additionally, if your home water pressure is below 20 PSI, the dishwasher will trigger this error even if water is flowing.