Home › Air Conditioners › Samsung › CF
Samsung Air Conditioner CF Error Code
Filter cleaning reminder. Here is what it means and how to clear it, easiest fix first.
CF is a reminder that the indoor unit's air filters are due for cleaning, not a fault. Dirty filters cut airflow, which can make the unit less effective at holding the set temperature. Samsung suggests cleaning the filters about every two weeks, or whenever CF appears.
Shown on wall-mount indoor units. These meanings come from Samsung's support pages for markets outside the US (such as the UAE, India, Malaysia and the Philippines); codes and display formats vary by model and region, so check your owner's manual.
How to fix Samsung CF
Switch off and remove the filters
Turn the unit off with the remote and switch off its breaker. Open the front panel or grille and slide the filters out.
Clean the filters
Vacuum or brush off loose dust, then wash the filters in lukewarm water with a little mild detergent. Rinse and let them air-dry fully out of direct sun before refitting.
Reset the reminder
Restore power and clear CF from the remote. On some Samsung remotes you press Options, choose Filter Reset and press SET, but the buttons differ by model, so check your manual.
When to call a technician
CF is maintenance only. If the unit still cools or heats poorly with clean filters, contact Samsung service.
Parts that commonly cause CF
- air filter
Order parts by your exact model number so they fit.
Other Samsung air conditioner codes
- ClAuto Clean running
- dFDefrosting the outdoor unit
- E101Indoor and outdoor units aren't communicating
- E121Room temperature sensor fault
- E122 / E123Indoor coil temperature sensor fault
- E154Indoor fan error
- E162 / E163Control board memory error
- E153 / E665Drain pump or float switch problem
- E554Refrigerant leak or low refrigerant
- E422Refrigerant flow blocked
- E458Outdoor fan error
- E416Compressor running too hot
- E221 / E231 / E251Outdoor temperature sensor fault
- E461 / E464Compressor or inverter fault
- E466Power supply voltage problem
- E440 / E441Outside temperature beyond operating limit
Frequently asked questions
What does CF mean on a Samsung air conditioner?
CF is a reminder that the indoor unit's air filters are due for cleaning, not a fault. Dirty filters cut airflow, which can make the unit less effective at holding the set temperature. Samsung suggests cleaning the filters about every two weeks, or whenever CF appears.
Can I fix Samsung CF myself?
Usually, yes. Most CF problems clear with simple checks you can do at home. Start with the first step above: switch off and remove the filters.
What if CF keeps coming back?
A code that returns after a reset and the checks above usually means a part is wearing out. Note when CF appears (which cycle, how often) and have your model number ready; it helps a technician bring the right part on the first visit.
Last reviewed 2026-10-19. Codes and steps can vary by model; check your owner's manual.