Miele Oven Error F21

⚡ Quick Answer: The Miele oven error F21 indicates a malfunction in the grill or upper heating element, resulting in insufficient or no heat for broiling or baking. S... ✅ DIY Fixable

What Does Error F21 Mean?

The Miele oven error F21 indicates a malfunction in the grill or upper heating element, resulting in insufficient or no heat for broiling or baking. Symptoms include the error code displayed, extended preheat times, and uneven cooking results. This issue can stem from a faulty heating element, damaged wiring, or control electronics failing to activate the heating element properly. A thorough inspection and testing are recommended to identify the exact cause.

Common Symptoms:

  • Error F21 code displayed on the oven panel
  • Oven fails to heat from the top element (e.g., poor broiling or baking)
  • Extended preheat times or uneven cooking results

Possible Causes

  • Faulty or failed grill/upper heating element (medium)
  • Loose, damaged, or corroded wiring/connection to the heating element (medium)
  • Control electronics failing to properly drive the heating element (low)

How to Fix Error F21

DIY Fix Check for obvious issues and power cycle

  1. Turn off the oven and disconnect power at the circuit breaker.
  2. Visually inspect the upper heating/grill element for signs of visible damage (cracks, burns).
  3. Restore power and see if the error reappears after a simple reset.

Technician Only Test and replace heating element or related components

  1. Disconnect power and remove oven access panel to reach the upper heating element.
  2. Use a multimeter to check continuity and correct resistance of the grill/upper heating element.
  3. Inspect and test wiring harness and connectors for continuity and secure connections.
  4. Replace the heating element if open circuit or out of spec.
  5. If element tests OK, test control board outputs to the element; replace faulty control electronics if needed.

Parts needed: Upper/grill heating element, Wiring harness/connectors, Possibly control board

🛑 When to Call a Pro:
  • If the error persists after visual checks and power cycling
  • If you cannot safely access or test internal components
  • If multimeter diagnostics show wiring or control issues rather than a simple element failure

Technical Specifications

wattage 3000W
component Heating Element
resistance 10-30 ohms
part_number Miele 1152040
voltage_rating 240V AC

Common Questions

What does F21 error mean on Miele oven?

F21 indicates a malfunction in the grill or upper heating element, leading to insufficient heat for cooking.

Can I fix Miele oven F21 error myself?

Yes, you can check for visible damage and power cycle the oven as initial troubleshooting steps.

How much does it cost to fix F21 error?

Repair costs range from medium to high, with heating element replacement being relatively affordable.

When should I call a technician for F21?

Call a technician if the error persists after basic checks or if you cannot safely access internal components.

Sources & References

Data last verified: 2026-02-11

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