Miele Dishwasher Error Code F14
Heater pressure switch fault
The control could not get a valid signal from the heater pressure switch — the safety switch that confirms water is circulating before the heater is energized — so it stops with F14 to protect the heating circuit. A blocked or split pressure hose, debris in the circulation path, or a failed switch are the usual causes.
What Does Error Code F14 Mean on a Miele Dishwasher?
Heater pressure switch fault.
The control could not get a valid signal from the heater pressure switch — the safety switch that confirms water is circulating before the heater is energized — so it stops with F14 to protect the heating circuit. A blocked or split pressure hose, debris in the circulation path, or a failed switch are the usual causes.
What Causes Error Code F14?
Here are the most common causes in order of frequency. Start with the most likely cause before moving to the next:
- 1 Heater pressure switch failure 45% of cases
- 2 Pressure hose blocked or split 30% of cases
- 3 Debris in circulation/sump path 25% of cases
How to Fix Miele Dishwasher Error Code F14
- 1
Clean the filters and sump
Remove and rinse the filter combination so the circulation path is clear.
- 2
Inspect the pressure hose
Check the hose to the pressure switch for kinks, splits, or trapped water.
- 3
Replace the pressure switch
If hose and path are clear, the switch has likely failed.
🔩 Miele heater pressure switch ($40–$90)
How to Reset Error Code F14
Clean the filters, check the pressure hose, switch off ~60 seconds, then restart on a short program.
Note: If the error returns after resetting, the underlying issue has not been resolved. Work through the fix steps above.
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When to Call a Professional
Pressure-switch and heating-circuit work is best handled by Miele authorized service.
Related Error Codes
Same Code on Other Brands
Error code F14 appears on these other brands too. See every brand that shows F14 →
Find Replacement Parts
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More Miele Dishwasher Error Codes
Frequently Asked Questions
What does error code F14 mean on a Miele Dishwasher? +
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Sources & References
- • Miele Customer Support — official manufacturer documentation
- • Our editorial & verification policy
Content verified against manufacturer service documentation. Last verified: June 14, 2026.