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E27

Siemens dishwasher E27: a power-supply fault or low mains voltage

Verified with sources1 sourceReviewed Aug 22, 2026
Technician coming? See what they must show you
Open dishwasher showing its racks
Yelderberry (talk)CC BY-SA 4.0Image source
Trace

Evidence linked to this decision

View source: Siemens dishwasher error codes

Risk level

High

Professional inspection is recommended.

Urgency

High

Quick answer

E27 indicates a power-supply fault or low mains voltage on a compatible Siemens dishwasher. Record the full display and E-Nr, then use only the external checks allowed by that model's manual.

Safety first

Stop and check this first

  • Switch off, close the water tap and stop immediately for leakage, burning smell, smoke, repeated tripping, damaged cable or water near electricity. Internal electrical, heating and leak diagnosis is not user-serviceable.

Safe checks you can perform

  • Stop and preserve the evidence
  • Check only the household supply
  • Stop after one safe correction

Leave these tasks to a qualified professional

  • Do not attempt this professional task: Model-specific Siemens dishwasher diagnosis

What a technician must be able to justify

A technician is coming

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.

  1. Model-specific Siemens dishwasher diagnosis

    What they doA qualified appliance technician should confirm the E-Nr and test the code-specific sensor, pump, valve, heater, harness, water path and control branch.

Before accepting a part or repair

Nothing has been shown yet. Do not accept a part swap based on the code alone.

Checks and evidence, step by step

Follow the documented order. An error code identifies the affected system, but it does not prove by itself which part has failed.

  1. 1

    Stop and preserve the evidence

    No special tools

    Procedure

    Switch the dishwasher off with its normal control, photograph the whole display and record the E-Nr. Do not cycle resets repeatedly.

    Switch off, close the water tap and stop immediately for leakage, burning smell, smoke, repeated tripping, damaged cable or water near electricity. Internal electrical, heating and leak diagnosis is not user-serviceable.

    Evidence: Siemens dishwasher error codes

  2. 2

    Check only the household supply

    No special tools

    Procedure

    Note wider outages or tripped protection. Do not use an extension lead, open the connection box or measure live voltage; use a qualified electrician.

    Switch off, close the water tap and stop immediately for leakage, burning smell, smoke, repeated tripping, damaged cable or water near electricity. Internal electrical, heating and leak diagnosis is not user-serviceable.

    Evidence: Siemens dishwasher error codes

  3. 3

    Stop after one safe correction

    No special tools

    Procedure

    After correcting one documented external condition, try one normal restart. If the code returns, stop and arrange model-specific service.

    Switch off, close the water tap and stop immediately for leakage, burning smell, smoke, repeated tripping, damaged cable or water near electricity. Internal electrical, heating and leak diagnosis is not user-serviceable.

    Evidence: Siemens dishwasher error codes

Virtual technician

Does E27 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
Siemens
Product type
Dishwashers

Known code variants

  • Balay dishwasher E27
  • Balay E27
  • Bosch dishwasher E27
  • Bosch E27
  • Bosch E27 error
  • Bosch Geschirrspüler Fehler E27
  • code erreur E27 lave-vaisselle Siemens
  • codice E27 Bosch
  • codice E27 Siemens
  • código E27 Siemens
  • E27
  • E27 Bosch dishwasher
  • E27 lavavajillas Balay
  • E27 Siemens dishwasher
  • E:27
  • erreur E27 Siemens
  • Error E27 Balay
  • error E27 lavavajillas Siemens
  • errore E27 lavastoviglie Bosch
  • errore E27 lavastoviglie Siemens
  • F27
  • F:27
  • Fehlercode E27 Bosch
  • Fehlercode E27 Siemens
  • Siemens dishwasher E27
  • Siemens E27
  • Siemens Geschirrspüler Fehler E27

What it means

Siemens' official regional dishwasher support associates E27 with a power-supply fault or low mains voltage. The code does not identify one universal replacement part. This meaning is dishwasher-specific, and the exact E-Nr manual prevails over this general code list.

Warnings and stop conditions

  • Highsource verified

    Switch off, close the water tap and stop immediately for leakage, burning smell, smoke, repeated tripping, damaged cable or water near electricity. Internal electrical, heating and leak diagnosis is not user-serviceable.

    Evidence: Siemens dishwasher error codes

Symptoms and causes

Probable causes · in order

  • External power supplyConfirmed

    The documented condition is a power-supply fault or low mains voltage. A visible obstruction, supply condition, load position or maintenance issue can sometimes create that branch where the exact manual permits a user check.

    Evidence: Siemens dishwasher error codes

  • Model-specific Siemens dishwasher diagnosisPossible

    A sensor, pump, valve, heater, harness, control module or sealed water-path component can produce the same branch and requires model-specific measurements.

    Evidence: Siemens dishwasher error codes

Sources and technical references

  1. 1

    Siemens dishwasher error codes

    Siemens · official_doc

Sources: Siemens dishwasher error codesreviewed 2026-08-22 · verified

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