Paid diagnostic · Estimate after inspection
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KONGRA
Diagnostic guide

Miele Dishwasher Not Draining

Water left in the tub, dirty dishes and a machine that stops early are three different complaints. This page helps you tell them apart before a visit.

Start here

What the symptom actually tells you

When water stays in the tub, the investigation follows the path the water should take: filters, the pump area on models that use one, hose routing, an air gap where fitted, and the household drain. Which arrangement applies depends on the model.

A fault code narrows the question without naming a part: Miele documents F13 as a water-inlet condition, not a failed drain pump. KONGRA LLC is independent and is not affiliated with, endorsed by or authorized by Miele; diagnosis is a paid on-site visit followed by a written estimate.

Differentiate

Which pattern matches what you are seeing

These are categories to narrow the question before a visit, not a remote diagnosis. Confirmation requires on-site measurement.

  • Water standing in the tub after the cycle ends
    A drainage question: filters, pump area, hose routing, air gap or the building drain line.
  • Dishes dirty but the tub is empty
    Prioritize wash coverage and circulation; an empty tub alone does not rule out an intermittent drainage problem.
  • Machine stops early, before or during filling
    An early stop alone does not prove an inlet fault. Where an exact F13 is shown, Miele identifies that code as a water-inlet condition; otherwise the filling you observed and a model-specific assessment decide.
  • Sink backs up, or a countertop air gap overflows
    Suggests the restriction may be downstream of the appliance. Note recent plumbing or disposal work too.
Safe to check

What you can safely observe yourself

Observations only. No tools, panels, water connections or electrical parts.

Owner observations
  • Note whether water remains in the tub, and where the cycle stopped
  • Record the model number and photograph any code shown
  • Check whether the sink drains normally and whether a visible air gap overflows
Do not attempt
  • Do not disconnect the drain hose or any water connection
  • Do not pull the dishwasher out or open the pump area
  • Do not work on the appliance while it is energized
Professional assessment

What requires a technician on site

Assessed during a paid diagnostic
  • Tracing the drain path the model uses, with installation and air-gap condition
  • Separating an appliance restriction from a building drain-line restriction
  • Reading service data and fault history; verifying drainage after corrective work
Model and scope boundaries
  • Drain arrangement and pump access differ by model — the rating plate determines the procedure
  • An inlet-stage code is not evidence of a drain-pump fault
  • Commercial warewashing is separate; plumbing beyond the appliance connection may require a licensed plumbing contractor
Before you book

What to send with your request

The more of this arrives up front, the more useful the first visit is.

  • Model number and the exact code displayed
  • Whether water remains in the tub at the end of the cycle
  • Whether the sink drains normally and whether an air gap is fitted
  • Any recent plumbing, disposal or installation change
Documentation

Documented service records

Documented service record

Miele G841: restoring drainage

During a Los Altos Hills service visit, the technician documented standing water, a blocked air gap and a displaced seal. The air gap was cleared and the seal repositioned. The entry confirms drainage was restored and the dishwasher operated properly during the check — not that every standing-water complaint needs the same work.

Documented diagnosis — no completed repair confirmed

G4228SCU: F13 intake diagnosis and recommendation

A documented diagnostic visit showed F13 with an Intake/Drain indication, while pressure and drainage were recorded as normal. The intake assembly and flow measurement were suspected and replacement recommended; the record confirms the recommendation only, not a completed repair or outcome.

Sources

Manufacturer references

Published manufacturer material

Relevant service pages

FAQ

Frequently asked questions

Does standing water mean the drain pump has failed?+

No. Filters, the pump area, hose routing, an air gap where fitted or the household drain can each hold water in the tub. The pump is confirmed by inspection, not assumed.

Is an F13 fault a drainage problem?+

Miele documents F13 as a water-inlet condition, not a drain-pump diagnosis. The exact model, the exact code and what you observed during filling all matter.

Can I check the air gap or the sink myself?+

You can look: note whether the sink drains normally and whether a countertop air gap overflows. Dismantling or reaching into the pump is not safe.