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Miele·Dishwasherhigh severity
Miele Error Code F78
Circulation pump blocked
Common Causes
- 1Pump impeller jammed
- 2Motor winding fault
- 3Bearing seizure
F78 after clearing F69 multiple times indicates bearing wear. The pump will fail completely soon — schedule replacement proactively.
Step-by-Step Troubleshooting
- 1
Attempt impeller clearance (same as F69 procedure)
- 2
If impeller spins freely, check motor windings for open/short
- 3
Listen for bearing noise — grinding indicates bearing failure
- 4
Check the pump motor thermal fuse
- 5
Replace pump assembly if bearings are seized
Pro Diagnostic Tip
F78 is a persistent/repeated blockage code vs F69 which is first-occurrence. If F78 appears, the pump bearings are likely failing even if the impeller currently spins — intermittent seizure under load.
You Might Also Notice
- •Intermittent wash failures
- •Pump works sometimes but not others
- •Increasing noise over weeks
Parts, Cost & Difficulty
Repair Difficulty
Professional OnlyEstimated Repair Cost
$450–$750
Parts + labor. Free diagnosis with repair.
Parts That May Need Replacement
Miele circulation pump assemblyMotor thermal fuse
Do You Have the Right Tools?
Bearing puller set ($120), drum spider wrench ($85), multimeter ($85), and diagnostic software. Our technician arrives with $15K+ in professional tools — your diagnostic is free.
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Error code F78 is a high-severity issue that can cause further damage to your dishwasher if left unresolved. A licensed technician can diagnose and fix it the same day.
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Frequently Asked Questions
What does Miele error code F78 mean?
Miele error code F78 indicates: Circulation pump blocked. This is a high-severity issue affecting your dishwasher.
How do I fix Miele error code F78?
Attempt impeller clearance (same as F69 procedure) Then, If impeller spins freely, check motor windings for open/short Then, Listen for bearing noise — grinding indicates bearing failure There are 2 more steps — see the full troubleshooting guide above. This repair typically requires professional tools and expertise.
How do I know if my dishwasher has error F78?
Besides the error code on the display, common signs include: Intermittent wash failures; Pump works sometimes but not others; Increasing noise over weeks. If you notice any of these symptoms, check your dishwasher's display panel for error code F78.
How much does it cost to fix Miele F78?
Repair costs for Miele F78 typically range from $450 to $750 depending on the specific cause and parts needed. EasyBear offers free diagnosis when you proceed with the repair. Call (415) 795-7300 for a same-day appointment.