Independent technical referenceOfficial site
  • Boilers
  • Gas boiler

E10

Baxi E10 on a gas boiler: outdoor sensor fault

Verified with sources1 sourceReviewed Oct 3, 2026
Technician coming? See the 2 steps they must show you
Wall-mounted combi gas boiler installed in a home
Kai KemmannCC BY-SA 4.0Image source

Risk level

Low

Usually safe to check without specialist tools.

Urgency

Low

Quick answer

Baxi E10 means the boiler reads the outdoor sensor, which measures the outside temperature, as faulty. Check whether your system has an outdoor sensor and call the service centre, as Baxi asks.

Safety first

Stop and check this first

  • Do not open the boiler to check the sensor terminal: Baxi asks for the power to be disconnected before any work and reserves repairs for the service centre.

Safe checks you can perform

  • Outdoor sensor and cable, by eye
  • Outside temperature in the menu
  • Technician sensor and cable measurement

Leave these tasks to a qualified professional

  • Do not attempt this professional task: Outdoor sensor measurement
  • Do not attempt this professional task: Control test after the repair

What a technician must be able to justify

Technician visit

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. Outdoor sensor measurement

    What they doThe technician measures the sensor resistance with a multimeter and compares it with the manufacturer's table for the current temperature.

    They must show youthe measured value against the table.

    In writingwhether the sensor, the cable or nothing was replaced.

  2. Control test after the repair

    What they doAfter the repair, the technician checks line 02 of the menu shows the outside temperature and the boiler controls with it.

    They must show youthe line 02 reading.

    In writingthe date and result of the test.

Before accepting a part or repair

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

Follow these steps

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

  1. Outdoor sensor and cable, by eye

    No special tools

    Who:
    you.
    How:
    find the outdoor sensor on the facade (a small box) and check, without opening it, whether it is loose, broken or its cable torn off.
    Result that matters:
    whether there is visible damage to the sensor or cable.
    If you see damage:
    tell the technician; it is probably the cause.
    If it looks fine:
    the cause may be in the hidden cable or the boiler connection.
    Evidence to keep:
    a photo of the sensor and the visible cable.

    Evidence: Baxi Platinum Compact ECO, instrucciones de funcionamiento y mantenimiento para el usuario

  2. Outside temperature in the menu

    No special tools

    Who:
    you.
    How:
    hold the information key for at least 1 second and look for line 02, outside temperature, as Baxi describes.
    Result that matters:
    whether the boiler shows an outside temperature that matches the weather.
    If there is no value or it is absurd:
    it confirms the sensor reading fails.
    If it matches:
    the fault may be intermittent; note when 10 appears.
    Evidence to keep:
    a photo of the display on line 02.

    Evidence: Baxi Platinum Compact ECO, instrucciones de funcionamiento y mantenimiento para el usuario

  3. Technician sensor and cable measurement

    Tools required

    Who:
    official service technician.
    How:
    measures the sensor resistance and the cable's continuity to the boiler.
    Result that matters:
    whether the sensor is within its curve and the cable is neither open nor shorted.
    If the sensor is off its curve:
    that confirms the sensor.
    If the sensor is fine:
    it points to the cable or connector.
    Evidence to keep:
    a report with the measured values.

    The sensor connection is on the boiler terminal strip, next to mains voltage: the technician measures it.

    Evidence: Baxi Platinum Compact ECO, instrucciones de funcionamiento y mantenimiento para el usuario

Still not solved

If the error persists, stop here. See what the technician must do and show you.

Where this code applies

A code is meaningful only inside the right product and version context.

Primary scope

System
Boilers
Brand
Baxi
Product type
Gas boiler

Known code variants

  • -00
  • -10
  • -20
  • 10
  • AEG E10 error
  • AEG Fehler E10
  • AEG lavadora C1
  • AEG lavadora E10
  • AEG lavadora E11
  • AEG lavatrice C1
  • AEG lavatrice E10
  • AEG lavatrice E11
  • AEG lave-linge C1
  • AEG lave-linge E10
  • AEG lave-linge E11
  • AEG Waschmaschine C1
  • AEG Waschmaschine E10
  • AEG Waschmaschine E11
  • AEG washer C1
  • AEG washer E10
  • AEG washer E11
  • Balay E10 auto dosing
  • Balay E10 AutoDosificación
  • Balay lavadora E10
  • Balay washer E10
  • Balay washing machine error E10
  • Baxi 10
  • Baxi E 10
  • Bosch dishwasher E10
  • Bosch E10
  • Bosch E10 error
  • C1
  • code erreur AEG E10
  • code erreur E10 lave-vaisselle Siemens
  • codice E10 Siemens
  • código E10 lavavajillas Bosch
  • código E10 Siemens
  • E10
  • E10 AEG lavadora
  • E10 AEG lavatrice
  • E10 AEG lave-linge
  • E10 AEG Waschmaschine
  • E10 AEG washer
  • E10 Bosch dishwasher
  • E10 Siemens dishwasher
  • E11
  • E:10
  • Electrolux E10 error fridge freezer
  • Electrolux E10 frigorífico
  • Electrolux E10 lavadora
  • Electrolux E11 lavadora
  • Electrolux E11 washer
  • Electrolux fridge E10
  • Electrolux fridge E10 not cold
  • Electrolux washer 1 beep
  • Electrolux washer error E10
  • Electrolux washer not filling with water
  • Electrolux washing machine E10
  • erreur E10 Siemens
  • Error 10 Baxi
  • error AEG E10
  • error E10 frigorífico Electrolux
  • error E10 lavadora Balay
  • error E10 lavadora Electrolux
  • error E10 lavadora Teka
  • error E10 lavadora Zanussi
  • error E10 lavavajillas Bosch
  • error E10 lavavajillas Siemens
  • errore AEG E10
  • errore E10 lavastoviglie Siemens
  • Fehlercode E10 Siemens
  • frigorífico Electrolux E10 no enfría
  • lavadora Electrolux 1 pitido
  • lavadora Electrolux no coge agua
  • lavadora Teka no coge agua E10
  • lavadora Zanussi E10 no coge agua
  • lavavajillas Bosch E10
  • Platinum Compact 10
  • Siemens dishwasher E10
  • Siemens E10
  • Siemens Geschirrspüler Fehler E10
  • Teka lavadora E10
  • Teka TKD E10
  • Teka washer error E10
  • Teka washer not filling E10
  • Teka washing machine E10
  • Zanussi E10 error washer
  • Zanussi E10 lavadora
  • Zanussi washer E10 not filling
  • Zanussi washing machine E10

What it means

On the Platinum Compact ECO, code 10 is a faulty outdoor sensor, and Baxi's action is to call the service centre. The outdoor sensor is an accessory Baxi recommends to adapt the flow temperature to the weather. If the control reads it as open or shorted, it shows 10. The sensor, its cable out to the facade or the connector at the boiler can fail. The code does not say which, and it does not involve the gas side.

Warnings and stop conditions

  • Lowsource verified

    Do not open the boiler to check the sensor terminal: Baxi asks for the power to be disconnected before any work and reserves repairs for the service centre.

    Evidence: Baxi Platinum Compact ECO, instrucciones de funcionamiento y mantenimiento para el usuario

Symptoms and causes

Probable causes · in order

  • Damaged outdoor sensorCommon

    The sensor is outdoors. If the cable is fine and the measured value is impossible, the sensor is the cause.

    Evidence: Baxi Platinum Compact ECO, instrucciones de funcionamiento y mantenimiento para el usuario

  • Sensor cable cut or wetPossible

    Building work, rodents or damp along the run to the facade give the same reading; it shows on the run or by measuring the cable.

    Evidence: Baxi Platinum Compact ECO, instrucciones de funcionamiento y mantenimiento para el usuario

Virtual technician

Does E10 still appear after these checks?

Answer a few questions to narrow down the likely cause and the safest next action. Guidance only - it never replaces a professional.

Sources and technical references

Sources: Baxi Platinum Compact ECO, instrucciones de funcionamiento y mantenimiento para el usuarioreviewed 2026-10-03 · verified

Was this entry useful?