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Nordmende integrated dishwasher won't drain: diagnosis and fix

NORDMENDE · integrated dishwasher · based on 70 similar repairs

Diagnosed by Sean McCauley · SMC Services · Last verified 10 May 2026

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Likely causes (Nordmende integrated dishwasher):

Problem summary

Your Nordmende integrated dishwasher is not draining water at the end of a cycle. Water remains in the tub after the programme finishes, or drains very slowly. This is one of the more common faults reported on models in the Nordmende range.

Likely causes

Based on 70 repair records, the most frequent causes are:

Drain pump failure (around 30% of cases)
The pump that forces water out of the tub can fail electrically or mechanically. If the pump has stopped working entirely, water will not drain regardless of other settings.

Control board (PCB) fault (around 6% of cases)
The main circuit board tells the pump when to run. If this board is faulty, the pump may not receive the signal to activate, leaving water in the tub.

Blocked or kinked drain hose (around 3% of cases)
The hose that carries water to the waste outlet can become blocked by debris or trapped between the dishwasher and the wall.

Why this needs an engineer

The drain pump is a sealed unit connected to the appliance's electrical circuit. Replacing it requires:

Diagnosis of a faulty control board also requires electrical testing equipment.

If the hose is blocked internally, it may need flushing or replacement — work that should be done by someone with access to the correct tools and replacement parts.

Do not attempt to bypass the pump, force water out manually, or open sealed electrical components yourself. These actions risk water damage, electric shock, or voiding your appliance's safety.

Before you call

If water is sitting in the tub, check whether the drain outlet outside the appliance (or connected to your waste system) is itself blocked. Pour water down the outlet by hand to see if it drains freely. If the outlet is clear but the dishwasher still won't drain, the fault is inside the appliance.

Note down: - When the problem started - Whether any error codes appear on the display - Whether the pump makes any noise during a cycle

This information helps the engineer diagnose faster.

When to call SMC Services

Contact a qualified engineer as soon as the fault appears. Leaving water in the tub encourages mould and bacterial growth, and can damage seals over time. If you're in Northern Ireland, SMC Services can usually book a repair within 2–3 working days.

Step by step

  1. Electrical and pump system hazards. The drain pump is powered by mains voltage and forms part of a sealed water system. Do not remove panels, disconnect wiring, or attempt to replace the pump yourself.
  2. Control board faults require diagnosis. If the pump is running but water still won't drain, the fault likely lies in the circuit board. This requires electrical testing that only a qualified engineer can perform.
  3. Standing water damage risk. Water left in the tub creates conditions for mould, bacterial growth, and potential seal degradation. Arrange a repair promptly to prevent secondary damage.

Frequently asked questions

Will the dishwasher damage itself if it sits full of water?
Prolonged standing water can promote mould growth inside the tub and pipework, and may eventually damage rubber seals. It's best to arrange a repair promptly rather than leave the appliance unused.
Could a blocked filter be stopping the drain?
The filter sits above the pump and catches large food particles. If it becomes very blocked, water may drain slowly. However, complete failure to drain usually points to the pump or control board, not the filter alone. An engineer can check this as part of diagnosis.
What if the dishwasher is still under warranty?
Check your warranty documents. Some warranties cover parts and labour; others may limit cover. The engineer can advise on warranty eligibility during your booking call.
Is it safe to tilt the dishwasher to drain the water myself?
No. Tilting risks damaging seals, flooding your floor, and causing electric shock. Always wait for an engineer to safely remove standing water.
How much does a drain pump repair usually cost?
Costs depend on the specific model and whether the pump is the only fault. The engineer will give you a quote before starting work.

Get this fixed

The parts most often needed for this repair — order direct:

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Prefer a pro? A local appliance engineer can carry out this repair. SMC's own repair service covers Northern Ireland only. The parts above ship UK-wide.

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About the data on this page

This page draws on 70 similar repairs from across 29 years of SMC Services records — over 116,000+ appliance repairs in total since 1997. The likely-cause percentages above are computed directly from the engineer reports we filed for this brand and fault, and we update them as new repairs come in.

SMC Services Ltd · Registered in Northern Ireland, Co. NI628091 · Domestic & Commercial Appliance Repairs.