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Error code reference

Wolf Hood Error Code FC

Recirculation filter alarm indicating the recirculation filter needs cleaning or replacement.

Wolf codesWolf hood codes

Recirculation filter alarm indicating the recirculation filter needs cleaning or replacement.

First step from the service manual

Hold Delay for 5 seconds (Black Hoods) or hold Filter for 5 seconds (Stainless/Glass Hoods) to reset Filter Alarm.

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

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What FC means on a Wolf hood

The FC error code on a Wolf hood indicates a recirculation filter alarm. This is a scheduled maintenance alert built into the hood's control system to notify users that the recirculation filter has accumulated enough grease, particulate matter, or odor-trapping carbon to require cleaning or full replacement. The alarm is time-based or usage-based, meaning the hood tracks operating hours and triggers the FC code once a preset threshold is reached, regardless of the filter's actual visible condition.

The recirculation filter system is found on ductless or recirculating hood configurations where exhaust air is not vented outside the home. Instead, air passes through one or more filter layers, typically a grease baffle or mesh filter combined with an activated carbon or charcoal filter, before being returned to the kitchen. When these filters become saturated, airflow restriction increases, filtration efficiency drops, and odors or grease particles can recirculate back into the cooking environment. The FC alarm is designed to prevent this degraded performance.

Resetting the alarm after servicing the filter is straightforward but differs by hood finish. On Black hood models, press and hold the Delay button for 5 seconds to clear the alarm. On Stainless or Glass hood models, press and hold the Filter button for 5 seconds instead. The reset must be performed after cleaning or replacing the filter, or the FC code will persist even though no underlying electrical or mechanical fault exists.

Source: manufacturer service documentation.

Common causes of FC

  1. 01

    Filter service interval reached

    Wiring / connection

    The hood's control system has logged enough operating hours to trigger the FC alarm as a scheduled reminder. This is the most common cause and does not indicate a malfunction, just that filter maintenance is due.

  2. 02

    Grease-saturated baffle or mesh filter

    Wiring / connection

    Heavy cooking use can clog the grease-collecting filter layer faster than the timer expects. Inspect the filter for visible grease buildup and wash it thoroughly with hot water and degreaser if it has not been cleaned recently.

  3. 03

    Spent activated carbon filter

    Part replacement

    Carbon or charcoal filters used in recirculating configurations cannot be washed and must be replaced once saturated. If the filter has been in use for several months or longer, replacement is required rather than cleaning.

  4. 04

    Alarm not reset after previous filter service

    Wiring / connection

    If the filter was recently cleaned or replaced but the reset procedure was not completed, the FC code will remain displayed. Performing the correct button hold reset for your hood model will clear it.

  5. 05

    Incorrect reset procedure used

    Wiring / connection

    Wolf hoods use different reset sequences depending on the finish. Black hoods require holding the Delay button for 5 seconds, while Stainless and Glass hoods require holding the Filter button for 5 seconds. Using the wrong button will prevent the alarm from clearing.

See the test procedure for each cause

Frequently asked questions about FC

What does FC mean on a Wolf hood?
FC is a recirculation filter alarm indicating that the hood's filter needs cleaning or replacement. It is a maintenance reminder triggered by the hood's usage tracking system, not an electrical or mechanical fault. After servicing the filter, the alarm must be manually reset using a button hold sequence on the control panel.
How do I reset the FC alarm on my Wolf hood?
The reset method depends on your hood model. On Black hoods, press and hold the Delay button for 5 seconds until the alarm clears. On Stainless or Glass hoods, press and hold the Filter button for 5 seconds instead. Always service or replace the filter before performing the reset so the usage counter restarts from a clean baseline.
Is it safe to keep using my Wolf hood while FC is displayed?
You can continue using the hood in the short term, but operating it with a saturated or clogged recirculation filter reduces its effectiveness. A restricted filter allows grease particles and cooking odors to pass back into the kitchen, and a heavily grease-laden filter can pose an increased fire risk over time. Addressing the filter service promptly is strongly recommended.
How much does it cost to fix the FC error on a Wolf hood?
If only cleaning is required, the cost can be minimal, primarily your time and basic degreaser supplies. If the carbon or charcoal filter needs replacement, replacement filter costs typically range from $20 to $80 or more depending on the filter type and configuration. No service technician is typically needed for this maintenance task.
Will resetting the FC code clear it permanently without replacing the filter?
Resetting the alarm without servicing the filter will clear the displayed code temporarily, but the alarm will return once the usage counter reaches the threshold again. More importantly, skipping filter maintenance leaves a degraded filter in place, which reduces air quality and grease capture efficiency. The correct approach is to clean or replace the filter first, then perform the reset.

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