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    What do the codes on my Philips Air Purifier mean?

    Updated on 03 August 2022
    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 Philips 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 HEPA filter

    • Code C0 to C9: Replace NanoProtect AC filter

    • Code SL: Sleep Mode

    • Code 1h: Timer mode

    • Code t: Turbo Mode.

    • Code L1 to L4: GAS level

    • 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 the Consumer Care Center in your country.

    • Error code: E1 to E4 The appliance has malfunctions. Please contact the Consumer Care Center in your country. 

    • Error code E6: The heater has malfunctions. Please contact the Consumer Care Center in your country.

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