Whirlpool Range Hood C — What It Means & How to Fix It
C on a Whirlpool range hood means the charcoal filter is due for washing after 120 hours of fan operation — clean and reactivate it, then press and hold FAN for 3 seconds to reset.
What this code means
Whirlpool says the display shows C when the fan is active after 120 hours of fan operation, meaning the charcoal filters should be washed. Wash in the dishwasher on the hottest setting with normal detergent, then reactivate by drying in an oven for 10 minutes at no more than 210°F (100°C). Hold FAN for 3 seconds to reset. In vented mode the alarm can be disabled by holding + and − together for 3 seconds.
Whirlpool vent hoods with a display and washable charcoal filter. Whirlpool says to replace the charcoal filter after about three years.
Most likely causes
| Cause | How likely | DIY-fixable? |
|---|---|---|
| 120 hours of fan use reached | Very common | Yes — wash filter |
| Charcoal alarm active on a vented (ducted) hood | Common | Yes — disable alarm |
What you can try yourself
- Remove the charcoal filter.
- Wash it in the dishwasher at the highest temperature with normal detergent.
- Dry it in an oven for 10 minutes at no more than 210°F to reactivate it, then refit.
- Press and hold FAN for 3 seconds to clear C.
- Ducted hood with no charcoal filter: hold + and − together for 3 seconds to disable the alarm.
When to call a technician
- C will not reset.
- The filter is damaged or over three years old — replace it.
- The fan does not run.
Typical professional repair cost: Free; a new charcoal filter is typically $20–$50.
Frequently asked questions
What does C mean on a Whirlpool range hood?
The charcoal filter should be washed; it shows after 120 hours of fan operation.
How do I reset it?
Press and hold FAN for 3 seconds.
My hood vents outside — why C?
The charcoal alarm is still enabled; hold + and − together for 3 seconds to disable it.
Sources checked
Error meanings can vary by model. This guide was checked against the documentation above; use the manual for the model number on your own appliance when it differs.
Related Whirlpool codes
- Whirlpool Range Hood F F on a Whirlpool range hood means the grease filter is due for washing after 30 hours of fan operation — wash and dry the metal filter, then press and hold FAN for 3 seconds to reset.
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