Miele Dishwasher Troubleshooting

Miele dishwashers are known for their quality and performance, but like any appliance, they can encounter issues from time to time. If you’re experiencing problems with your Miele dishwasher, this troubleshooting guide can help you identify and potentially resolve common issues.

1. Dishwasher Doesn’t Start


Possible Causes:

  • Improper Loading: Ensure that dishes are loaded correctly and not blocking the spray arms.
  • Clogged Spray Arms: Check for debris or food particles clogging the spray arms. Remove any obstructions.
  • Dirty Filters: Clean the dishwasher’s filters. They can become clogged with food particles and detergent residue.
  • Hard Water: If you have hard water, consider using a water softener or adding dishwasher salt.

3. Dishwasher is Noisy

Possible Causes:

  • Improper Loading: Ensure dishes are loaded correctly and not touching each other, as this can cause noise during the wash cycle.
  • Spray Arm Obstruction: Check for any items or debris that might be blocking the spray arm’s rotation.
  • Loose Parts: Inspect the dishwasher’s interior for loose cutlery or small items that might be causing noise during operation.

4. Water Leaks

Possible Causes:

  • Door Seal: Inspect the door gasket for any visible damage or wear. Replace it if necessary.
  • Loose Hoses: Check all hoses and connections for leaks or loose fittings. Tighten or replace them as needed.
  • Overflow: Ensure you’re not overloading the dishwasher with too much detergent, which can cause excessive suds and leaks.

5. Dishes Not Drying Properly

Possible Causes:

  • Rinse Aid Empty: Make sure the rinse aid dispenser is filled. Low rinse aid levels can result in poor drying performance.
  • Wash Cycle Selection: Some Miele dishwashers have specific cycles for better drying. Consider using a cycle with a higher temperature or longer drying time.
  • Plastic Dishes: Plastic items tend to retain moisture. Arrange them so water can drain off easily.

6. Error Codes Displayed

Possible Causes:

  • Consult the Manual: Refer to your Miele dishwasher’s user manual to decode the specific error code and follow the recommended troubleshooting steps.
  • Reset the Dishwasher: Sometimes, a simple reset can clear error codes. Turn off the dishwasher, unplug it for a few minutes, and then restart it.
  • Professional Help: If the error persists or is complex, it’s best to contact Miele customer service or a qualified technician for assistance.

7. Unusual Odors

Possible Causes:

  • Dirty Interior: Clean the interior of the dishwasher, including the filters and spray arms, to remove any trapped food particles or debris.
  • Detergent Residue: Use a dishwasher cleaner or run an empty cycle with vinegar to eliminate detergent buildup and odors.
  • Regular Maintenance: Consider performing routine maintenance to prevent odors, such as cleaning the dishwasher monthly and leaving the door open to air it out when not in use.

8. Cloudy Glassware

Possible Causes:

  • Hard Water: Cloudy glassware can be a result of hard water. Consider using a water softener or increasing the amount of rinse aid you use.
  • Improper Detergent: Ensure you’re using the right type and amount of dishwasher detergent. Using too much detergent can leave a residue on glassware.
  • Rinse Aid Level: Make sure the rinse aid dispenser is set to the appropriate level. Adjust it as needed for optimal results.

9. Detergent Not Dissolving

Possible Causes:

  • Detergent Compartment Obstruction: Check the detergent dispenser for any obstructions, like utensils or caked detergent. Clean it out to ensure proper detergent release.
  • Water Temperature: Ensure your dishwasher’s incoming water temperature is hot enough. The ideal temperature for most dishwashers is around 120°F (49°C) for effective detergent activation.
  • Detergent Type: Confirm that you’re using dishwasher-specific detergent. Regular dish soap can cause suds and issues with detergent dissolution.

10. Dishwasher Smells Bad

Possible Causes:

  • Standing Water: Check the dishwasher’s drain for any standing water or debris. A clogged drain can lead to foul odors.
  • Food Residue: Remove any food debris from the dishwasher’s interior, especially around the filter and spray arms.
  • Mold or Mildew: If the dishwasher has not been used for a while, it may develop mold or mildew. Clean it thoroughly, and consider using a dishwasher cleaner or running a cycle with vinegar.

11. Dishwasher Won’t Drain

Possible Causes:

  • Clogged Drain Hose: Inspect the drain hose for clogs or kinks. Clear any obstructions.
  • Blocked Drain Pump: Remove the dishwasher’s lower rack and filter to access the drain pump. Check for debris or foreign objects that might be obstructing it.
  • Faulty Drain Pump: If the drain pump is not functioning, it may need to be repaired or replaced by a technician.

12. Inconsistent Results

Possible Causes:

  • Water Temperature: Ensure that the water entering the dishwasher is hot enough. Inconsistent water temperature can lead to inconsistent cleaning.
  • Spray Arm Blockage: Check for blockages in the spray arms. Even a small obstruction can affect the distribution of water and detergent.
  • Old Detergent: If you’ve had detergent for a long time, it might lose its effectiveness. Replace it with fresh detergent.
  • Dish Placement: Ensure that large or heavily soiled items are not blocking the spray arms and preventing water from reaching other dishes.

13. Error Code F14

If you encounter an F14 error code on your Miele dishwasher, this usually indicates a water intake problem. Check the following:

  • Water Inlet: Ensure that the water inlet valve is fully open and that the water supply to the dishwasher is not restricted.
  • Inlet Filter: Clean the water inlet filter to prevent any blockages.
  • Water Pressure: Make sure your home’s water pressure is within the recommended range. Low water pressure can trigger this error.


Common Dishwasher Problems

ProblemPossible CauseSolutionRecommended ActionAdditional Notes
Not Turning OnPower supply issueCheck power source and circuit breakerEnsure dishwasher is plugged in
Dishes Not CleaningClogged spray armsClean spray arms and filtersUse a dishwasher cleaner
Leaking WaterFaulty door sealReplace door gasketAvoid overloading dishwasher
Strange NoiseLoose or worn partsTighten or replace damaged componentsContact Miele service
Not DrainingClogged drain filterClean the drain filterCheck for debris in the sink

Error Codes and Solutions

Error CodeDescriptionSolutionRecommended ActionAdditional Notes
F11Drainage issueCheck drain hose for clogsEnsure the drain hose is not kinked
F12Water intake issueInspect water inlet valveVerify water supply is on
F13Water leakageCheck for leaks and loose connectionsAvoid overloading dishwasher
F14Water intake faultInspect water inlet filterEnsure water pressure is adequate
F70Waterproof system activatedReset waterproof system and check for leaksAvoid overloading dishwasher

Dishwasher Won’t Start

IssuePossible CauseSolutionRecommended ActionAdditional Notes
No Lights on Control PanelPower supply issueCheck power source and circuit breakerEnsure dishwasher is plugged in
Door Not Fully ClosedDoor latch misalignmentAdjust door latch or replaceEnsure dishes are not obstructing
Control Lock EnabledControl lock engagedDisable control lock (refer to manual)Keep the control panel unlocked
Faulty Control PanelControl panel malfunctionReplace control panelContact Miele service
Timer Delay SetDelay start option activatedDisable timer delay (refer to manual)Reset the delay timer

Dishwasher Not Draining

IssuePossible CauseSolutionRecommended ActionAdditional Notes
Clogged Drain HoseHose obstructionRemove clog from drain hoseCheck for debris in the sink
Blocked Pump ImpellerDebris in pumpClean pump impellerAvoid food scraps in the dishwasher
Faulty Drain PumpPump malfunctionReplace drain pumpContact Miele service
Drain Air Gap IssueAir gap cloggedClean the air gap and hosesEnsure proper installation
Faulty Control BoardControl board malfunctionReplace control boardContact Miele service

Dishes Not Drying Properly

IssuePossible CauseSolutionRecommended ActionAdditional Notes
Improper LoadingDishes blocking airflowRearrange dishes for better airflowFollow loading guidelines
Rinse Aid EmptyEmpty rinse aid reservoirRefill rinse aid reservoirUse a high-quality rinse aid
Wash TemperatureWater not hot enoughCheck water heater temperature settingEnsure water temperature is adequate
Faulty Heating ElementHeating element malfunctionReplace heating elementContact Miele service
Dirty FiltersClogged filtersClean filters regularlyUse a dishwasher cleaner

These tables provide troubleshooting guidance for various issues that can occur with a Miele dishwasher, including common problems, error codes, startup issues, drainage problems, and drying issues.

Remember to always turn off the power and water supply to your dishwasher before attempting any repairs or maintenance. If you’re unsure about any of the troubleshooting steps or if the issue persists, it’s best to contact Miele customer support or a qualified technician for assistance. Regular maintenance and following the manufacturer’s guidelines can go a long way in keeping your Miele dishwasher running smoothly.


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