Miele Dishwasher Error Codes

Expert Tips

Did you see a weird code on your Miele dishwasher? Just trying to make it go away might not really fix anything, and the code could come back. What to do? First, try to find out why this code is showing up on your dishwasher. It might be telling you something is wrong with it. If it’s hard to figure out, it’s a good idea to talk to someone who knows a lot about dishwashers. They can help you understand the problem and get your dishwasher working right again.

Quick Solutions for Resolving Error Codes on Miele Dishwasher

Repairing a dishwasher often involves dealing with electrical components, a task that can be complex and hazardous, especially for those not familiar with appliance repair and electrical safety. If you are unsure about what you are doing or lack the necessary experience, it is strongly recommended to seek professional assistance. A qualified technician can provide an accurate diagnosis and ensure safe repairs, reducing the risk of injury or further damage to the appliance.

Error Code: F01

The F01 error code in a Miele dishwasher indicates an issue with the water temperature or turbidity sensor. This error suggests that the sensor is not detecting water conditions correctly, which is crucial for optimal washing performance.

Possible Causes:

Faulty Water Temperature Sensor: The sensor responsible for monitoring water temperature might be malfunctioning.
Turbidity Sensor Issues: The sensor that measures water clarity could be defective or giving inaccurate readings.
Clogged or Dirty Sensors: Build-up of food particles or mineral deposits on the sensors.
Water Inlet Problems: Issues with water supply, such as low pressure or temperature inconsistencies.
Blocked Filters: Filters clogged with debris affecting water quality entering the sensors.

Fixes:

Inspect and Replace Sensors: Check both the water temperature and turbidity sensors for faults and replace if necessary.
Clean Sensors: Remove any build-up from the sensors to ensure accurate readings.
Verify Water Supply: Ensure that the dishwasher is receiving water at the correct pressure and temperature.
Clean Filters: Regularly clean the dishwasher filters to prevent clogging and ensure good water quality.
Check Water Inlet: Make sure the water inlet is functioning properly and not contributing to the issue.

Error Code: F02

The F02 error code in a Miele dishwasher suggests a problem with the water heater thermistor circuit. This issue indicates that there might be a malfunction in the components responsible for heating the water and monitoring its temperature.

Possible Causes:

Faulty Water Heater Thermistor: The thermistor, which measures water temperature, could be malfunctioning or damaged.
Heating Element Issues: Problems with the heating element itself, including damage or failure.
Faulty Wiring or Connections: Loose or damaged cables connecting the heating element and thermistor.
Control Module Malfunction: The dishwasher’s control module might not be processing the thermistor’s readings correctly.

Fixes:

Inspect and Replace Thermistor: Check the thermistor for faults and replace it if necessary.
Evaluate Heating Element: Ensure the heating element is functioning properly and replace it if it’s faulty.
Check Wiring and Connections: Secure all connections and repair any damaged wiring to the heating element and thermistor.
Control Module Assessment: Have a technician check the control module for any errors.

Error Code: F11

The F11 error code in a Miele dishwasher indicates a drainage fault. This error typically occurs when the dishwasher is unable to drain water effectively.

Possible Causes:

Blocked Drain Pump or Filter: Debris or food particles clogging the drain pump or filter.
Kinked Drain Hose: A hose that is bent or twisted, impeding water flow.
Issues with Sink Drain: Problems with the household sink drain to which the dishwasher is connected, such as clogs or improper installation.
Faulty Drain Pump: The pump responsible for draining water might be malfunctioning.

Fixes:

Clear Blockages in Drain Pump and Filter: Inspect and clean out any blockages in the drain pump and filter.
Straighten Drain Hose: Ensure the drain hose is not kinked or twisted and is positioned correctly.
Check Sink Drain: Verify that the sink drain is clear and functioning properly.
Inspect and Repair Drain Pump: If the drain pump is faulty, it may need to be repaired or replaced.

Error Code: F12, F13, F14, F15

Error codes F12, F13, F14, and F15 in a Miele dishwasher are all related to water intake problems. Each of these codes points to issues in different components that are involved in the water intake and circulation process.

F12 – Water Intake Fault at Start of Step
F13 – Water Intake Fault at End of Step
F14 – Circulation Pressure Fault (Weak Pump Performance)
F15 – Hot Water Intake Fault (Water not Heated)

Possible Causes:

Inlet Valve Issues (F12, F13, F15): Problems with the water inlet valve, such as blockages or mechanical failure, affecting water flow into the machine.
Circulation Pump Problems (F14): The circulation pump may be underperforming or malfunctioning.
Blockages in Heat Pressure Switch (F14): Obstructions in the pathways affecting the pressure switch that monitors water circulation.
Faulty Water Heating (F15): Issues with the dishwasher’s ability to heat incoming water, potentially linked to the heating element or related sensors.

Fixes:

Inspect and Repair Inlet Valve: Check for blockages or malfunctions in the water inlet valve and repair or replace as necessary.
Evaluate Circulation Pump (F14): Ensure the pump is functioning correctly and replace it if it’s underperforming.
Clear Blockages in Pressure Switch (F14): Remove any obstructions affecting the heat pressure switch pathways.
Check Water Heating Components (F15): Assess the heating element and associated sensors for functionality.

Error Code: F18

The F18 error code in a Miele dishwasher indicates a flow meter error. This suggests a problem with the component responsible for measuring the amount of water entering the dishwasher.

Possible Causes:

Malfunctioning Flow Meter: The flow meter may be faulty or not functioning correctly, leading to inaccurate water intake measurements.
Clogged or Dirty Flow Meter: Build-up of debris or mineral deposits on the flow meter can impede its function.
Electrical Connection Issues: Wiring or connection problems between the flow meter and the control unit.
Water Inlet Valve Problems: If the inlet valve is not working properly, it can affect the flow meter’s readings.

Fixes:

Inspect and Replace Flow Meter: Check the flow meter for any signs of malfunction or damage and replace it if necessary.
Clean the Flow Meter: Remove any debris or build-up that might be affecting the flow meter’s accuracy.
Check Electrical Connections: Ensure all connections to the flow meter are secure and in good condition.
Evaluate Water Inlet Valve: Confirm that the inlet valve is functioning properly, as its performance can impact flow meter readings.

Error Code: F19

he F19 error code in a Miele dishwasher points to a problem either with the flow meter or the water inlet valve. This error indicates a disruption in the accurate measurement or regulation of water flow into the dishwasher.

Possible Causes:

Faulty Flow Meter: The flow meter, which measures the amount of water entering the dishwasher, may be malfunctioning or providing inaccurate readings.
Malfunctioning Inlet Valve: The water inlet valve, responsible for controlling the flow of water into the machine, could be defective or not operating correctly.
Clogged or Dirty Flow Meter and Valve: Build-up of debris, sediment, or mineral deposits affecting the functionality of both the flow meter and inlet valve.
Electrical Connection Problems: Wiring or connection issues related to either the flow meter or the inlet valve.

Fixes:

Inspect and Repair Flow Meter: Check the flow meter for any signs of damage or malfunction and replace or repair as needed.
Evaluate and Replace Inlet Valve: Ensure the inlet valve is functioning correctly, replacing it if it’s found to be faulty.
Clean Meter and Valve: Remove any build-up or debris that may be affecting the operation of the flow meter and inlet valve.
Check Electrical Connections: Verify that all connections to both components are secure and repair any faulty wiring.

Error Code: F24

The F24 error code in a Miele dishwasher indicates a heater relay error. This error points to a problem with the relay that controls the heating element, crucial for the dishwasher’s operation.

Possible Causes:

Faulty Heater Relay: The relay responsible for switching the heating element on and off might be malfunctioning.
Wiring Issues: Problems with the electrical wiring connecting the heater relay to the heating element and control board.
Control Board Malfunction: The dishwasher’s control board may have an issue, affecting the operation of the heater relay.
Faulty Heating Element: In some cases, a problem with the heating element itself could trigger this error code.

Fixes:

Replace Heater Relay: If the relay is found to be defective, it should be replaced.
Inspect and Repair Wiring: Check for and fix any issues with the wiring connected to the heater relay and heating element.
Evaluate Control Board: Have a technician assess the control board for any faults that might impact the heater relay.
Check Heating Element: Ensure that the heating element is functioning correctly, as issues here can sometimes manifest as relay errors.

Error Code: F25

The F25 error code in a Miele dishwasher indicates a temperature sensor error. This suggests an issue with the sensor responsible for monitoring the water temperature inside the dishwasher.

Possible Causes:

Malfunctioning Temperature Sensor: The sensor may be faulty, providing inaccurate temperature readings or failing to operate correctly.
Wiring or Connection Issues: Problems in the electrical connections between the temperature sensor and the control board.
Build-up on Sensor: Accumulation of mineral deposits or debris on the sensor, affecting its ability to accurately detect temperature.
Control Board Malfunction: The dishwasher’s control module might not be processing the sensor’s readings correctly.

Fixes:

Inspect and Replace Temperature Sensor: Check the temperature sensor for damage or malfunction and replace it if necessary.
Check Electrical Connections: Ensure all wiring and connections to the sensor are secure and in good condition.
Clean the Sensor: Remove any build-up on the sensor to improve its accuracy.
Evaluate Control Board: Consider having a technician assess the control board for any faults.

Error Code: F26

The F26 error code in a Miele dishwasher indicates a heating error. This error signals a problem with the dishwasher’s ability to heat water, which is essential for effective cleaning.

Possible Causes:

Faulty Heating Element: The primary heating element may be malfunctioning or broken, preventing water from reaching the required temperature.
Heater Relay Issues: Problems with the relay responsible for controlling the heating element.
Wiring or Electrical Connection Problems: Faulty or loose wiring connecting the heating element to the power source or control board.
Control Board Malfunction: The dishwasher’s control system might not be effectively regulating the heating process.
Faulty Temperature Sensor: In some cases, a defective temperature sensor can incorrectly signal a heating error.

Fixes:

Replace Heating Element: If the heating element is found to be defective, it should be replaced.
Inspect and Repair Heater Relay: Check the heater relay for faults and replace it if necessary.
Check Wiring and Electrical Connections: Ensure all connections to the heating element are secure and intact.
Evaluate Control Board: Have a technician assess the control board for any issues affecting heating operations.
Check Temperature Sensor: Ensure the temperature sensor is functioning correctly, as its readings can affect heating control.

Descale the Dishwasher: Run a descaling solution through the dishwasher to remove limescale.
Clean the Heat Pump: Manually clean the heat pump, focusing on removing any limescale deposits.
Regular Maintenance: Use water softeners or regularly descale the dishwasher to prevent future build-up.

Error Code: F40

The F40 error code in a Miele dishwasher indicates an electronic fault. This error typically points to a problem with the dishwasher’s electronic control system, suggesting a malfunction in the control board or related electronic components.

Possible Causes:

Control Board Failure: The main control board might be malfunctioning, affecting its ability to manage the dishwasher’s functions.
Electrical Connection Issues: Problems with the wiring or connections to the control board.
Power Supply Problems: Issues with the dishwasher’s power supply that could affect the control board’s operation.
Software or Firmware Glitches: Sometimes, the error could be due to software or firmware issues within the control system.

Fixes:

Inspect and Replace Control Board: Check the control board for any visible signs of damage or failure and replace if necessary.
Secure Electrical Connections: Ensure all connections to the control board are intact and secure.
Check Power Supply: Verify that the dishwasher is receiving a stable and correct power supply.
Update Software or Firmware: If applicable, ensure that the dishwasher’s software or firmware is up to date.

Error Code: F42

The F42 error code in a Miele dishwasher indicates a line frequency registration fault. This error is related to the dishwasher’s ability to detect and synchronize with the electrical frequency of the power supply.

Possible Causes:

Power Supply Inconsistencies: Fluctuations or irregularities in the home’s electrical supply can lead to this error.
Control Board Sensitivity: The dishwasher’s control board might be overly sensitive or malfunctioning in its detection of line frequency.
Electrical Connection Problems: Issues with the wiring or connections providing power to the dishwasher.
Faulty Control Board: The control board itself might be defective, impacting its ability to accurately register the line frequency.

Fixes:

Check Home Power Supply: Ensure the electrical supply to the dishwasher is consistent and matches the required specifications.
Inspect Control Board: Evaluate the control board for any signs of malfunction or damage.
Secure Electrical Connections: Confirm that all connections to the dishwasher are secure and in good condition.
Replace Control Board if Necessary: If the control board is found to be faulty, it may need to be replaced.

Error Code: F51

The F51 error code in a Miele dishwasher indicates an issue with the heater pressure switch. This component is responsible for monitoring water pressure in the heating circuit, and the error suggests a malfunction or irregularity in its operation.

Possible Causes:

Malfunctioning Heater Pressure Switch: The switch itself may be faulty, failing to accurately detect and respond to changes in water pressure within the heating system.
Blockages in the Water Circuit: Clogs or obstructions within the water circuit, particularly around the heater or the pressure switch, can disrupt normal pressure levels.
Air Trapped in the System: Air pockets within the heating circuit can lead to inaccurate pressure readings.
Circulation Pump Issues: Problems with the circulation pump can affect water pressure and the switch’s ability to function correctly.

Fixes:

Inspect and Replace Pressure Switch: Evaluate the heater pressure switch for faults and replace it if necessary.
Clear Blockages: Check and clear any obstructions in the water circuit, especially near the heater and the pressure switch.
Bleed Air from the System: If air is trapped in the heating system, steps should be taken to remove it and restore normal pressure.
Check Circulation Pump: Ensure the circulation pump is functioning properly, as its performance can directly affect water pressure.

Error Code: F52

The F52 error code in a Miele dishwasher indicates that the heater pressure switch has switched unexpectedly or incorrectly. This error suggests that the switch, which monitors the water pressure in the heating circuit, is either activating at the wrong times or providing inaccurate readings.

Possible Causes:

Heater Pressure Switch Malfunction: The switch might be overly sensitive or faulty, triggering at inappropriate times.
Fluctuations in Water Pressure: Sudden changes in water pressure within the heating system could be causing the switch to activate.
Circulation Pump Issues: Problems with the circulation pump affecting the water pressure in the heater.
Air in the Heating Circuit: Air trapped in the heating system can lead to erratic pressure readings and switch activation.
Blockages in the Water Circuit: Obstructions around the heater or in the water paths affecting normal water flow and pressure.

Fixes:

Replace or Adjust Pressure Switch: The heater pressure switch may need to be replaced or recalibrated if it is malfunctioning.
Stabilize Water Pressure: Identify and resolve issues causing water pressure fluctuations in the heating system.
Inspect Circulation Pump: Ensure that the circulation pump is working correctly and repair or replace it if necessary.
Remove Air from System: Bleed any trapped air from the heating circuit to normalize pressure levels.
Clear Blockages: Check for and remove any clogs or debris in the water paths, especially near the heater.

Error Code: F53, F63, F67, F68, F69

Error codes F53, F63, F67, F68, and F69 in a Miele dishwasher are related to circulation pump errors. These codes indicate various issues with the dishwasher’s circulation pump, a key component responsible for moving water through the system during wash cycles.

F53 – Circulation Pump Blocked
F63 – Circulation Pump Failure
F67 – Circulation Pump Speed Too Low
F68 – Circulation Pump Operating After End of Program
F69 – Circulation Pump Blocked by Foreign Objects

Possible Causes:

Blocked Circulation Pump (F53, F69): Debris or foreign objects obstructing the pump, affecting its operation.
Circulation Pump Failure (F63): The pump might be malfunctioning or completely broken.
Low Pump Speed (F67): The pump is not reaching the necessary speed, possibly due to mechanical issues or power supply problems.
Pump Running Post-Cycle (F68): The pump continues to operate after the program has ended, indicating a control issue or a pump malfunction.
Electrical Connection Issues: Wiring problems affecting the pump’s operation.

Fixes:

Clear Pump Blockages (F53, F69): Inspect and remove any debris or foreign objects from the circulation pump.
Replace or Repair Pump (F63, F67): If the pump is faulty or underperforming, it may need to be repaired or replaced.
Check Electrical Connections: Ensure all connections to the pump are secure and in good condition.
Control Module Assessment (F68): Have a technician check the control module for errors that could cause the pump to run continuously.

Error Code: F70

The F70 error code in a Miele dishwasher indicates a float switch fault. This error typically arises when there is an issue with the water level in the dishwasher, either due to problems with the drain pump or the float switch itself.

Possible Causes:

Faulty Float Switch: The switch, which detects the water level inside the dishwasher, might be malfunctioning or stuck.
Drain Pump Problems: Issues with the drain pump, such as blockages or mechanical failure, can prevent water from being efficiently removed, affecting the float switch.
Water Leakage: If there’s a leak inside the dishwasher, it can cause the float switch to activate erroneously.
Obstructions in the Base: Accumulation of water in the dishwasher’s base, often due to blockages or leaks, triggering the float switch.

Fixes:

Inspect and Repair Float Switch: Check if the float switch is stuck or damaged and repair or replace it as necessary.
Clear Drain Pump Blockages: Remove any debris or obstructions in the drain pump that might impede water drainage.
Identify and Fix Leaks: Check for leaks in the dishwasher and repair any found to prevent water accumulation.
Remove Water from Dishwasher Base: If there’s water in the base of the dishwasher, dry it out to reset the float switch.

Error Code: F78

The F78 error code in a Miele dishwasher indicates a blockage in the circulation pump. This issue suggests that something is hindering the pump’s ability to circulate water effectively within the dishwasher.

Possible Causes:

Debris or Foreign Objects in the Pump: Accumulation of food particles, glass fragments, or other debris in the circulation pump.
Clogged Filters Leading to Pump Blockage: Filters that are heavily clogged can lead to debris being pushed into the circulation pump.
Impeller Issues: The pump’s impeller may be obstructed or damaged, preventing it from rotating properly.
Mechanical Failure within the Pump: Internal components of the circulation pump might be malfunctioning or broken.

Fixes:

Clear Pump Blockages: Carefully inspect and remove any debris or foreign objects from the circulation pump.
Clean Dishwasher Filters: Regularly clean the filters to prevent debris from reaching the pump.
Inspect the Pump’s Impeller: Check if the impeller is free of obstructions and is in good condition.
Check for Mechanical Failures: If there are signs of mechanical failure in the pump, it may need to be repaired or replaced.

Error Code: F84

The F84 error code in a Miele dishwasher indicates that the detergent reservoir is empty. This error occurs when the dishwasher’s system detects that there is no detergent available for the wash cycle.

Possible Causes:

Empty Detergent Reservoir: The reservoir that holds the dishwasher detergent has run out.
Sensor Issue: The sensor responsible for detecting the detergent level might be malfunctioning.
Dispensing System Problems: Issues with the mechanism that dispenses detergent into the dishwasher.

Fixes:

Refill Detergent Reservoir: Check and refill the dishwasher’s detergent reservoir.
Inspect Detergent Sensor: Ensure that the sensor is functioning correctly and not giving false readings.
Check Dispensing System: Make sure the dispensing system is working properly and is not clogged or jammed.

Get Your Miele Dishwasher Fixed Right

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