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    AC5659/40 Series 5000i Air Purifier
    Please be aware that your product may differ in color from this picture, but the support information is same
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    Series 5000i Air Purifier

    AC5659/40

    What do the codes on my Philips Air Purifier mean?

    Your Philips Air Purifier gives you reassurance by displaying real-time indoor air quality codes. Discover what the codes mean.

    Meanings of codes in Philips Air Purifiers

    Depending on the Air Purifier model you have, you might find one or more of the following indicators or codes:

    • Code: A
      Auto mode

    • Code: C
      Gas mode (AC3254 and AC3256 only)

    • Code: L
      Child lock on

    • Code: UL
      Child lock off

    • Code: F0
      Clean the pre-filter

    • Code: A0 to A9
      Replace NanoProtect S3 HEPA filter

    • Code C0 to C9:
      Replace NanoProtect S3 AC filter

    • Code SL
      Sleep Mode

    • Code 1h:
      Timer mode

    • Code t:
      Turbo Mode.

    • Error Code: Er
      The hall sensor is not working properly. Remove and then reattach the front panel. If the error code “Er” still persists, we recommend you to contact us.

    • Error code: E1 to E4
      The appliance has malfunctions. In this case, we recommend you to contact us.

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