Miele Dishwasher: pump running continuously
What is this symptom?
Is your Miele dishwasher's pump running continuously? This issue often indicates that the anti-flood safety system has been triggered due to water in the base tray, or a faulty float switch is preventing proper operation. Discover common causes and solutions to resolve this frustrating problem quickly.
Important Tips for Miele Models
- Miele official support lists ‘Drain pump running with door open’ as a documented symptom, suggesting built‑in safety and control behaviors. (JustAnswer
Possible Causes
Anti‑flood safety system activated due to water in base tray
How to Identify: Pump runs even when dishwasher appears empty, may stop after tilting machine and draining base tray water; base pan water observed on tilting.
Part: Flood/swim‑type float switch and base tray
Stuck or faulty float switch inside tub or at base
How to Identify: Float inside dishwasher may not move freely or indicate water level properly, causing continuous drain signal.
Part: Float switch assembly
Clogged drain path causing improper water detection
How to Identify: Blockages or food debris in filters or hoses may confuse sensors/control into repeated drain commands; observed flow issues.
Part: Drain hose, filters, sump area
Control board or relay fault
How to Identify: Pump runs with no other symptoms or error codes, persists after resets and float checks; wiring damage may be present.
Part: Control board/relay circuitry
DIY Solutions
Check for water in base tray and reset
- Open dishwasher door and loosen front bottom access panel screws.
- Carefully tilt dishwasher forward and check for water in base tray onto towels.
- If water present, drain and dry base tray completely.
- Turn off power at breaker for 5–10 minutes to allow control reset.
- Restore power and test if continuous pump operation stops.
Inspect and free the internal float switch
- Turn off power to dishwasher.
- Remove lower rack and locate internal float assembly.
- Check that float can move freely and is not blocked by debris.
- Clean around float and test movement; reassemble and power on to test.
- If float seems stuck or defective, consider replacing float switch assembly per manual instructions.
Clear filters and check drain hose
- Remove bottom filter assembly and rinse under running water.
- Inspect drain hose for kinks or blockages; clear any debris.
- Reinstall filters and secure hose connections.
- Run short test cycle to see if issue persists.
Next step
Choose the next step for pump running continuously
Confirm the diagnosis before ordering. An error code can identify the system involved, but it does not prove that a specific part has failed.
Most relevant component to inspect
Float Switch
Detects the maximum water level to prevent overflow and potential flooding.
- Typical part-only price
- $15 - $40
- DIY difficulty
- Easy
- Estimated time
- 10-20 mins
Where can I find the model number?
Check the rating label around the door, lid, frame, rear panel, or inside the appliance cabinet. Use the complete model number, including suffixes.
Verify the complete model and part number on the retailer's compatibility page before ordering.
Other parts options
Check related components first; use model search as a fallback.
Drain Hose
Carries waste water from the drain pump to your home's standpipe or sink drain.
Main Control Board
The central brain of the appliance that controls all components, cycles, and timings.
Model-compatible Dishwasher parts
Enter the complete model number to browse compatible replacement parts. This is a model-based parts search, not a diagnosis that a specific component failed.
Affiliate disclosure: As an Amazon Associate I earn from qualifying purchases. We may earn a commission from other qualifying purchases or service requests made through links on this page, at no additional cost to you. Recommendations are based on repair relevance, not commission rate.
Optional routine care
Maintenance supplies
These products support cleaning or routine upkeep. They are separate from the possible repair components above and are not claimed to fix this error code or symptom.
Dishwasher Cleaner and Descaler
Supports routine removal of mineral scale, grease, and odor. It is maintenance, not a repair for a failed pump, valve, or control.
Braided Dishwasher Inlet Hose
For replacement of an externally damaged supply hose. Verify connection size, length, and appliance installation requirements before ordering.
Affiliate disclosure: As an Amazon Associate I earn from qualifying purchases. Recommendations are based on routine-care relevance, not commission rate.
Professional Repairs
Replace faulty float switch or anti‑flood sensor
Control board/relay replacement
When to Call a Professional
Preventive Maintenance
-
Regularly clean filters and inspect float assembly: Blockages and float sticking that can mislead water level sensing
Frequency: monthly -
Check for minor leaks or moisture under dishwasher: Anti‑flood triggers causing continuous pump run
Frequency: quarterly
Frequently Asked Questions
Why is my Miele Dishwasher pump running continuously?
How do I fix Miele Dishwasher pump running continuously myself?
How much does it cost to fix pump running continuously?
When should I call a technician for pump running continuously?
References & Sources
Community Analytical Insights
Guidance from available sources; statistical claims are shown only for samples of at least 10 discussions
Common Issues Reported by Users
- Faulty float switch causing continuous pump operation
- Clogged drain causing the pump to run continuously
- Malfunctioning control board incorrectly signaling the pump
User Suggested Solutions
-
Inspect and replace the float switch if defective. Check for debris and ensure it moves freely. Disconnect power, remove the float assembly, and test continuity with a multimeter.
-
Clear any clogs in the drain hose or filter. Remove the bottom spray arm and filter, then clean thoroughly. Ensure the drain hose is not kinked or blocked.
-
Test and replace the control board if it is malfunctioning. This involves removing the dishwasher's front panel, disconnecting the old board, and installing a new one.
Limited-source guidance; percentages and success-rate claims are not shown
View
Sources
Data compiled from real discussions on r/appliancerepair and r/Appliances:
Community Discussions
pump constantly running after cycle
The issue may be related to the electronics card that controls the pump.
Source: Reddit r/appliancerepair
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