Miele Dishwasher: error code F24

Professional Repair Guide

What is this symptom?

If your Miele dishwasher displays error code F24, it's indicating a heating issue during a wash cycle. This may cause the water not to heat properly, leading to incomplete cycles and potential drainage after the error appears. Understanding the causes and solutions can help restore your appliance's functionality.

Urgency: Medium

Important Tips for Miele Models

  • Official Miele states F24 indicates a heating relay contact fault and recommends professional service because this fault is technical and not user‑serviceable. (Miele Appliance Support)(Miele

Possible Causes

Heating relay contact fault

How to Identify: F24 shown on display; dishwasher does not heat water; often occurs shortly after water fill. (Miele Appliance Support

Part: Heater relay (on control board)

Faulty heating element or heater circuit

How to Identify: Dishwasher fails to heat; multimeter resistance outside expected range. (ersatzteilshop.de

Part: Heating element / heater circuit

Wiring/connectivity issue between control board and heater

How to Identify: Visual damage or loose connectors on wiring between heater relay and heater assembly. (Miele Appliance Support

Part: Wiring harness / connectors

DIY Solutions

Power reset and basic inspection

Easy 10‑15 minutes
Tools Needed: None
  1. Turn off dishwasher and disconnect power at mains.
  2. Wait ~5 minutes to allow electronics to reset.
  3. Reconnect power and run a short cycle to see if error persists.
⚠️ Safety First: Ensure appliance is unplugged before any inspection.

Next step

Choose the next step for error code F24

Confirm the diagnosis before ordering. An error code can identify the system involved, but it does not prove that a specific part has failed.

Other parts options

Check related components first; use model search as a fallback.

Possible related component

Heating Element

Heats the water or air inside the appliance to the required temperature.

$40 - $95 · Medium · 30-45 mins

Check fit & price
Possible related component

Wiring Harness

Connects controls, sensors, motors, and other electrical components inside the appliance.

$20 - $120 · Medium · 30-90 mins

Check fit & price
Model number required

Model-compatible Dishwasher parts

Enter the complete model number to browse compatible replacement parts. This is a model-based parts search, not a diagnosis that a specific component failed.

Find a part that fits my model

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Optional routine care

Maintenance supplies

These products support cleaning or routine upkeep. They are separate from the possible repair components above and are not claimed to fix this error code or symptom.

Maintenance supply

Dishwasher Cleaner and Descaler

Supports routine removal of mineral scale, grease, and odor. It is maintenance, not a repair for a failed pump, valve, or control.

View maintenance supply
Maintenance supply

Braided Dishwasher Inlet Hose

For replacement of an externally damaged supply hose. Verify connection size, length, and appliance installation requirements before ordering.

View maintenance supply

Affiliate disclosure: As an Amazon Associate I earn from qualifying purchases. Recommendations are based on routine-care relevance, not commission rate.

Professional Repairs

Replace heater relay on control board

Estimated Cost: $70 - $150

Replace heating element

Estimated Cost: $50 - $200

Inspect and repair wiring/connectors

Estimated Cost: $50 - $120

When to Call a Professional

Error F24 persists after reset
You detect damaged or burnt electrical components
You cannot safely access internal wiring or heating element

Preventive Maintenance

  • Regularly inspect dishwasher heating system during service: Prevents unexpected heating relay or element faults
    Frequency: annually

Frequently Asked Questions

Why is my Miele Dishwasher error code F24?
Error code F24 indicates a heating fault, often due to a heating relay contact issue, faulty heating element, or wiring problems.
How do I fix Miele Dishwasher error code F24 myself?
Try a power reset: turn off the dishwasher, disconnect power, wait 5 minutes, reconnect, and run a short cycle.
How much does it cost to fix error code F24?
Professional repairs can range from $50 to $200, depending on whether you need to replace the heating relay, element, or inspect wiring.
When should I call a technician for error code F24?
If DIY solutions don't resolve the issue, or if you're uncomfortable working with electrical components, it's best to call a technician.

References & Sources

Community Analytical Insights

Guidance from available sources; statistical claims are shown only for samples of at least 10 discussions

Common Issues Reported by Users

  • Blocked drain pump or filter
  • Faulty water inlet valve
  • Malfunctioning control board

User Suggested Solutions

  1. Inspect and clean the drain pump and filter. Remove the lower spray arm and check for any debris. Clean the filter under running water and ensure the pump is free of obstructions.

  2. Test the water inlet valve for continuity using a multimeter. If faulty, replace the valve. Ensure the water supply is turned off before replacing.

  3. Check the control board for any visible signs of damage or burnt components. If necessary, replace the control board by disconnecting the power and following the manufacturer's instructions.

Limited-source guidance; percentages and success-rate claims are not shown
View Sources

Data compiled from real discussions on r/appliancerepair and r/Appliances:

  1. Miele Dishwasher G 7366 F24 error code - Heater Relay?

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