- Appliances
- Dishwashers
F78
Miele dishwasher F78: a blocked circulation pump or its control branch
Evidence linked to this decision
View source: Miele dishwasher fault F78Risk level
Medium
Proceed carefully and stop if the check is unclear.
Urgency
High
Quick answer
F78 indicates a blocked circulation pump or its control branch on a Miele dishwasher covered by the official support page. Record the full display and model number before making only the documented external checks.
Safety first
Stop and check this first
- Stop immediately for leakage, burning smell, smoke, repeated tripping, damaged cable or water near electricity. Close the tap where relevant; internal mains, heating and leak work is not user-serviceable.
Safe checks you can perform
- Preserve the exact evidence
- Use the official pump-release step only if applicable
- Try only one controlled restart
Leave these tasks to a qualified professional
- Do not attempt this professional task: Model-specific Miele dishwasher diagnosis
What a technician must be able to justify
Technician visit
These are the steps they must carry out and show you. Tick them as they work: if steps are skipped, do not accept a part swap.
These are not instructions for opening or handling the equipment yourself. They are the checks that should support a technical conclusion.
Model-specific Miele dishwasher diagnosis
What they doA qualified appliance technician should confirm the model generation and test the relevant pump, valve, relay, sensor, lock, harness, water path or controller.
Before accepting a part or repair
Nothing has been shown yet. Do not accept a part swap based on the code alone.
Follow these steps
Note: Follow the documented order. An error code identifies the affected system, but it does not prove by itself which part has failed.
Preserve the exact evidence
Switch the dishwasher off normally, photograph the complete display and record the model and serial number. Do not keep clearing the code.
Stop immediately for leakage, burning smell, smoke, repeated tripping, damaged cable or water near electricity. Close the tap where relevant; internal mains, heating and leak work is not user-serviceable.
Evidence: Miele dishwasher fault F78
Use the official pump-release step only if applicable
If the exact Miele instructions specify it, add 1 litre of warm water no hotter than 75 °C with 3–5 drops of rinse aid after removing and later correctly refitting the lower spray arm and filters. Otherwise stop.
Stop immediately for leakage, burning smell, smoke, repeated tripping, damaged cable or water near electricity. Close the tap where relevant; internal mains, heating and leak work is not user-serviceable.
Evidence: Miele dishwasher fault F78
Try only one controlled restart
After one documented external correction, reconnect and start one normal programme. If the code returns, stop and arrange Miele-qualified service.
Stop immediately for leakage, burning smell, smoke, repeated tripping, damaged cable or water near electricity. Close the tap where relevant; internal mains, heating and leak work is not user-serviceable.
Evidence: Miele dishwasher fault F78
Still not solved
If the error persists, stop here. See what the technician must do and show you.
Virtual technician
Does F78 still appear after these checks?
This guided flow uses the exact code and your answers to choose a test, an expected result and the next branch.
Where this code applies
A code is meaningful only inside the right product and version context.
Primary scope
- System
- Appliances
- Brand
- Miele
- Product type
- Dishwashers
Known code variants
- anomalía F78 Miele
- anomalie F78 Miele
- code erreur F78 lave-vaisselle Miele
- error F78 lavavajillas Miele
- errore F78 lavastoviglie Miele
- Fehlercode F78 Miele
- guasto F78 Miele
- Miele dishwasher F78
- Miele F78
- Miele fault F78
- Miele Geschirrspüler Fehler F78
What it means
Miele's official dishwasher support describes F78 as a blocked circulation pump or its control branch. The same F-code can mean something else on another Miele product, and the exact operating instructions take precedence.
Warnings and stop conditions
- Highsource verified
Stop immediately for leakage, burning smell, smoke, repeated tripping, damaged cable or water near electricity. Close the tap where relevant; internal mains, heating and leak work is not user-serviceable.
Evidence: Miele dishwasher fault F78
Symptoms and causes
Probable causes · in order
- Circulation systemConfirmed
Miele's official dishwasher support describes F78 as a blocked circulation pump or its control branch. The same F-code can mean something else on another Miele product, and the exact operating instructions take precedence.
Evidence: Miele dishwasher fault F78
- Model-specific Miele dishwasher diagnosisPossible
A dry-stuck pump can sometimes match the official user procedure; an electrical, pressure-switch or pump fault needs measurements.
Evidence: Miele dishwasher fault F78
Sources and technical references
- 1
Miele Great Britain · official_doc
Was this entry useful?