Could a failing Dishwasher Non-Return Valve cause the MIELE G-SERIES DISHWASHER to have symptom: Drain Fault?

The non-return valve prevents wastewater from flowing back into the sump. If the internal ball mechanism becomes stuck due to calcium buildup or debris, the pump cannot create enough pressure to push water past it, triggering the F11 drain fault. Replacing this component restores the unidirectional fluid flow required for the drainage cycle.

Could a failing Drain Pump Assembly cause the MIELE G-SERIES DISHWASHER to have symptom: Drain Fault?

The synchronous drain pump utilizes a permanent magnet rotor which can lose torque over time or become physically blocked. When the electronics detect a lack of RPM or current variance indicative of water movement, the F11 error is triggered. A new pump ensures the impeller can generate the necessary centrifugal force to evacuate the sump.

Could a failing Flexible Drain Hose cause the MIELE G-SERIES DISHWASHER to have symptom: Drain Fault?

Over time, the internal walls of the corrugated drain hose can accumulate grease and particulate matter, significantly reducing the cross-sectional area for flow. This increased fluid resistance causes the drain cycle to time out. A replacement hose eliminates backpressure issues and ensures the pump can meet its flow rate specifications.

What is the most likely root cause for a MIELE G-SERIES DISHWASHER with symptom: Drain Fault?

The non-return valve prevents wastewater from flowing back into the sump. If the internal ball mechanism becomes stuck due to calcium buildup or debris, the pump cannot create enough pressure to push water past it, triggering the F11 drain fault. Replacing this component restores the unidirectional fluid flow required for the drainage cycle.

MIELE G-SERIES DISHWASHER Drain Fault

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CONF	DIAGNOSIS	ACTION
93% CONF	Dishwasher Non-Return Valve The non-return valve prevents wastewater from flowing back into the sump. If the internal ball mechanism becomes stuck due to calcium buildup or debris, the pump cannot create enough pressure to push water past it, triggering the F11 drain fault. Replacing this component restores the unidirectional fluid flow required for the drainage cycle. SKU: 05750095	VIEW ON AMAZON #CommissionsEarned
4% CONF	Drain Pump Assembly The synchronous drain pump utilizes a permanent magnet rotor which can lose torque over time or become physically blocked. When the electronics detect a lack of RPM or current variance indicative of water movement, the F11 error is triggered. A new pump ensures the impeller can generate the necessary centrifugal force to evacuate the sump. SKU: 06239562	VIEW ON AMAZON #CommissionsEarned
3% CONF	Flexible Drain Hose Over time, the internal walls of the corrugated drain hose can accumulate grease and particulate matter, significantly reducing the cross-sectional area for flow. This increased fluid resistance causes the drain cycle to time out. A replacement hose eliminates backpressure issues and ensures the pump can meet its flow rate specifications. SKU: 05035210	VIEW ON AMAZON #CommissionsEarned

DIY Repair Guide

Watch exactly how to replace the Dishwasher Non-Return Valve.

// NOTICE: This report is generated by an Agentic AI Engineer utilizing probabilistic modeling.

PartSniper is an automated parts recommender service. AI-generated results may not be correct. This data is not a substitute for professional engineering advice or manual inspection. Always verify part compatibility and disconnect power before any repair. PartSniper is not liable for inaccuracies, injury, or damage.

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MIELE G-SERIES DISHWASHER Drain Fault

DIY Repair Guide