Miele Dishwasher Error Code F84
Slide-shutter positioning fault during water intake
The control could not confirm the correct position of the slide shutter / diverter that directs water during intake, so it stops with F84. It is closely related to the F63 water-path fault — the diverter valve, its position sensing, or the control electronics are the usual causes; excess detergent foam can also confuse the positioning.
What Does Error Code F84 Mean on a Miele Dishwasher?
Slide-shutter positioning fault during water intake.
The control could not confirm the correct position of the slide shutter / diverter that directs water during intake, so it stops with F84. It is closely related to the F63 water-path fault — the diverter valve, its position sensing, or the control electronics are the usual causes; excess detergent foam can also confuse the positioning.
What Causes Error Code F84?
Here are the most common causes in order of frequency. Start with the most likely cause before moving to the next:
- 1 Diverter/slide-shutter mechanism fault 45% of cases
- 2 Position sensing or wiring fault 30% of cases
- 3 Excess detergent foam disrupting positioning 15% of cases
- 4 Control board fault 10% of cases
How to Fix Miele Dishwasher Error Code F84
- 1
Use the correct detergent dose
Excess or wrong detergent can foam and disrupt the shutter — run a rinse and dose correctly.
- 2
Power cycle
Switch off at the unit for several minutes to clear a transient fault.
- 3
Diverter/board diagnosis
Persistent F84 needs the diverter valve and control electronics checked by Miele.
🔩 Miele diverter/slide-shutter unit ($90–$200)
How to Reset Error Code F84
Run a rinse with the correct detergent dose and power off several minutes. If F84 persists, the diverter/control needs service.
Note: If the error returns after resetting, the underlying issue has not been resolved. Work through the fix steps above.
Did this guide fix your appliance?
✓ Thanks — your feedback helps us improve this guide for the next person.
Thanks for letting us know. If the steps above didn't work, see when to call a professional.
When to Call a Professional
Diverter and control-board faults on Miele dishwashers require authorized service.
Find Replacement Parts
Use these links to find the exact replacement parts for your Miele Dishwasher:
External links — ApplianceErrors.com is not affiliated with these retailers.
More Miele Dishwasher Error Codes
Frequently Asked Questions
What does error code F84 mean on a Miele Dishwasher? +
How do I fix error code F84 on my Miele Dishwasher? +
How do I clear or reset error code F84? +
Is error code F84 serious? +
Sources & References
- • Miele Customer Support — official manufacturer documentation
- • Our editorial & verification policy
Content verified against manufacturer service documentation. Last verified: June 14, 2026.