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Error code reference

Viking Hood Error Code FILTER

Filter light illuminates after 30 hours of operation to indicate the filter needs to be cleaned.

Viking codesViking hood codes

Filter light illuminates after 30 hours of operation to indicate the filter needs to be cleaned.

First step from the service manual

Clean the filter and press the filter button to reset the indicator.

The complete diagnostic procedure includes additional test steps, resistance specifications, wiring diagram references, and component test points.

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What FILTER means on a Viking hood

The FILTER indicator on a Viking hood is a timer-based maintenance reminder, not a sensor-triggered fault code. The system tracks cumulative fan operation time and automatically illuminates the FILTER light after 30 hours of use. This built-in hour meter is designed to prompt regular filter maintenance before grease and particulate buildup can reduce airflow efficiency or create a fire hazard within the filter assembly.

The component involved is the grease filter, which captures aerosolized cooking oils, smoke, and particulates before they enter the blower housing and ductwork. After 30 hours of operation, even if the filter appears relatively clean, the indicator activates to ensure the filter is serviced on a consistent schedule. The 30-hour threshold is a fixed interval that resets only when manually cleared by the user after cleaning.

Because this is a timer-based reminder rather than a performance or fault alert, the FILTER light does not indicate a mechanical failure. It will continue to illuminate regardless of actual filter condition until the reset procedure is performed. Once the filter has been cleaned and reinstalled, pressing the filter button on the control panel clears the accumulated hour count and turns off the indicator, restarting the 30-hour cycle.

Source: manufacturer service documentation.

Common causes of FILTER

  1. 01

    30-hour operation timer reached

    Wiring / connection

    The hood tracks cumulative fan run time and triggers the FILTER light at every 30-hour interval. This is the only cause of this indicator activating and requires no diagnostic work beyond cleaning the filter.

  2. 02

    Filter not reset after previous cleaning

    Wiring / connection

    If the filter button was not pressed after the last cleaning, the indicator will remain on even with a clean filter installed. Pressing the filter button while the unit is powered will clear the indicator.

  3. 03

    Heavily soiled filter from high-volume cooking

    Wiring / connection

    Frequent or high-heat cooking accelerates grease accumulation on the filter, meaning the filter may be visibly clogged well before the 30-hour timer activates. Inspect the filter mesh for heavy grease buildup and clean accordingly.

  4. 04

    Damaged or deformed filter requiring replacement

    Part replacement

    If the filter mesh is torn, warped, or corroded after cleaning, it should be replaced rather than reinstalled. A compromised filter reduces grease capture efficiency and can allow grease to reach the blower housing.

See the test procedure for each cause

Frequently asked questions about FILTER

What does FILTER mean on a Viking hood?
The FILTER indicator means the hood's built-in timer has counted 30 hours of fan operation and is reminding you to clean the grease filter. This is a scheduled maintenance alert, not a malfunction or error. The light will stay on until you clean the filter and press the filter button to reset the timer.
How do I fix the FILTER light on my Viking hood?
Remove the grease filter and clean it thoroughly, typically by soaking in hot soapy water or running it through a dishwasher if the filter is dishwasher-safe. Reinstall the filter once it is dry, then press the filter button on the hood's control panel to reset the indicator. The FILTER light should turn off immediately after the reset is confirmed.
Will simply resetting the FILTER indicator clear it without cleaning?
Yes, pressing the filter button will reset the timer and turn off the FILTER light even if the filter has not been cleaned. However, skipping the cleaning defeats the purpose of the reminder. Accumulated grease on a clogged filter reduces airflow performance and increases the risk of a grease fire, so cleaning before resetting is strongly recommended.
Is it safe to keep using my Viking hood when the FILTER light is on?
The hood will continue to operate normally when the FILTER light is on, so there is no immediate safety shutoff. However, continued use with a dirty or heavily loaded filter reduces ventilation efficiency and allows grease to build up in the filter assembly over time. Addressing the indicator promptly by cleaning the filter lowers fire risk and keeps the hood performing correctly.
How much does it cost to fix the FILTER issue on a Viking hood?
In most cases there is no cost at all, since the FILTER light is a maintenance reminder that is resolved by cleaning the existing filter. If the filter is damaged and needs replacement, a new Viking grease filter typically costs in the range of $20 to $80 depending on the hood model. Professional service is not required for this maintenance task.

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