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E14

LG PuriCare E14 or E18 on an air purifier: UV nano check

Verified with sources1 sourceReviewed Oct 4, 2026
Technician coming? See the 2 steps they must show you
Rowenta Intense Pure Air home air purifier with HEPA filter
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Risk level

Low

Usually safe to check without specialist tools.

Urgency

Low

Quick answer

On an LG PuriCare air purifier, E14 (upper part) or E18 (bottom part) means the UV nano check failed, usually because the filter or its case is not fitted correctly. Unplug it and refit the filter and cover.

Safety first

Stop and check this first

  • Do not defeat or force the UV lamp safeguards: LG fits them so UV light cannot reach people.

Safe checks you can perform

  • Which part reports: upper or bottom
  • Filter with the handle facing up
  • Cover closure and new test

Leave these tasks to a qualified professional

  • Do not attempt this professional task: Check of the UV safeguard and module
  • Do not attempt this professional task: Test with filter and cover fitted

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. Check of the UV safeguard and module

    What they doThe technician checks the safeguard detects the fitted filter and cover and that the UV nano module of the affected part responds, using LG's procedure.

    They must show youthe safeguard check with the filter fitted and the condition of the UV module.

    In writingthe failing part, its reference and the reason for replacing it.

  2. Test with filter and cover fitted

    What they doAfter the repair, the technician fits the filter and cover as in normal use and confirms E14 or E18 does not return.

    They must show youthe unit assembled and running without a code.

    In writingthe test and its result.

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. Which part reports: upper or bottom

    No special tools

    Who:
    you.
    How:
    check whether the code is E14 or E18. On the double-tier 360 Alpha, E14 is the upper part and E18 the bottom part.
    Result that matters:
    knowing which tier to check.
    If it is E14:
    check the upper filter and cover.
    If it is E18:
    check the bottom filter and cover.
    Evidence to keep:
    photo of the display with the code.

    Evidence: [LG Air Purifier] An E18/E14 error (UV nano check) occurred

  2. Filter with the handle facing up

    No special tools

    Who:
    you, no tools.
    How:
    unplug the power cord, separate the front and back covers, pull the filter out by its handle and refit it with the handle side facing up, as LG says.
    Result that matters:
    the filter seated in the correct position.
    If it was upside down or loose:
    it is now corrected; move on to the cover.
    If it was already right:
    check the cover closure carefully.
    Evidence to keep:
    photo of the fitted filter.

    Evidence: [LG Air Purifier] An E18/E14 error (UV nano check) occurred

  3. Cover closure and new test

    No special tools

    Who:
    you.
    How:
    insert the fixed part at the bottom of the cover into the socket at the base of the unit, close the cover, connect the power cord and switch on.
    Result that matters:
    whether the code clears at switch-on.
    If it does not appear:
    the cause was how the filter or cover was fitted.
    If it keeps appearing:
    LG says service should inspect it.
    Evidence to keep:
    photo of the display after switching on.

    Evidence: [LG Air Purifier] An E18/E14 error (UV nano check) occurred

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
Appliances
Brand
LG
Product type
Air purifiers

Known code variants

  • aerotermia Viessmann E14
  • Balay dishwasher E14
  • Balay E14
  • Bosch dishwasher E14
  • Bosch E14
  • Bosch E14 error
  • Bosch E14 lavavajillas
  • Bosch Geschirrspüler Fehler E14
  • code erreur E14 lave-vaisselle Bosch
  • code erreur E14 lave-vaisselle Siemens
  • codice E14 Bosch
  • codice E14 Siemens
  • código E14 Bosch
  • código E14 Siemens
  • E14
  • E14 Bosch dishwasher
  • E14 lavavajillas Balay
  • E14 Siemens dishwasher
  • E18
  • E:14
  • erreur E14 Bosch
  • erreur E14 Siemens
  • Error 14
  • Error E14 Balay
  • error E14 lavavajillas Bosch
  • error E14 lavavajillas Siemens
  • errore E14 lavastoviglie Bosch
  • errore E14 lavastoviglie Siemens
  • F14
  • F:14
  • Fehlercode E14 Bosch
  • Fehlercode E14 Siemens
  • LG air purifier E14 E18 UV nano check
  • LG PuriCare E14
  • LG PuriCare E18
  • Philips cafetera E14
  • Philips E14
  • Philips error 14
  • Philips espresso overheated
  • purificador LG E14 E18 UV nano
  • Siemens dishwasher E14
  • Siemens E14
  • Siemens Geschirrspüler Fehler E14
  • Viessmann E14
  • Viessmann Vitocal 100-AW E14
  • Vitocal 100-AW AM2V E14
  • Vitocal alta presión E14
  • Vitocal E14
  • Vitocal high pressure protection

What it means

LG explains that the UV lamps have safeguards so they cannot reach people directly, so a code may appear if the filter case and filter are not assembled correctly. On the double-tier PuriCare 360 Alpha, E14 is the UV nano check of the upper part and E18 of the bottom part. The code shows the safeguard does not accept the assembly; it does not prove the UV lamp is faulty. If it stays after refitting the filter and case correctly, LG says a service inspection is needed.

Warnings and stop conditions

  • Lowsource verified

    Do not defeat or force the UV lamp safeguards: LG fits them so UV light cannot reach people.

    Evidence: [LG Air Purifier] An E18/E14 error (UV nano check) occurred

Symptoms and causes

Probable causes · in order

  • Filter fitted wronglyCommon

    LG says the filter goes with the handle side facing up; otherwise the UV safeguard does not accept the assembly.

    Evidence: [LG Air Purifier] An E18/E14 error (UV nano check) occurred

  • Cover or filter case not closedCommon

    The fixed bottom part of the cover must go into its socket before closing; if the cover does not close properly, the same code appears with a correct filter.

    Evidence: [LG Air Purifier] An E18/E14 error (UV nano check) occurred

  • Safeguard or UV module faultPossible

    If the filter and cover are fitted correctly and the code persists, LG says a technician should inspect it.

    Evidence: [LG Air Purifier] An E18/E14 error (UV nano check) occurred

Virtual technician

Does E14 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: [LG Air Purifier] An E18/E14 error (UV nano check) occurredreviewed 2026-10-04 · verified

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