Samsung windfree ac

[Akhtar0007]

 ​I own a Samsung WindFree Inverter Split AC, 5.00 kW 5 Star (2025 model), and it is repeatedly showing the An-304 error.

​I am very regular with maintenance; I clean the filters every Sunday and even had the unit professionally pressure-washed just a month ago. Despite this, the error persists. Whenever this error appears, the cooling performance drops significantly.

​I have called Samsung technicians multiple times, but they are unable to identify or fix the root cause. This problem started only three months after I purchased the unit, and I am looking for a permanent solution as the recurring visits are not helping.

[sumitkhemnar]

Hello! Dealing with an error on a brand new 2025 model is very frustrating. Since you have already cleaned the filters and had a professional pressure wash, the An-304 error usually points to a Restriction in Airflow or a Communication Error between the fan motor and the PCB.
Here is the permanent solution plan:
1. Check the "WindFree" Panel:
Sometimes, the micro-holes in the WindFree panel get clogged with fine dust that a regular wash can't clear.
Open the WindFree panel and ensure there is no moisture buildup inside the panel, as it can confuse the humidity/airflow sensors.
2. Inspect the Indoor Fan (Blower):
Since the error persists after washing, ask the technician to check the Blower Fan Motor RPM. If the motor is not spinning at the required speed, the PCB triggers the An-304 error to prevent the coil from freezing.
3. Reset the Smart Diagnosis:
Use the SmartThings App to run a "Full Diagnosis."
Note down the exact sub-code if it shows one. This will give the technician a specific part to replace (like the Ambient Sensor or the Fan Capacitor).
4. Demand a PCB/Motor Replacement:
Since your AC is under warranty (2025 model), and technicians are unable to fix it, insist on a PCB or Indoor Fan Motor replacement. Recurring visits without a fix mean the issue is likely a faulty component from the factory.
5. Escalation:
If the local technician is unhelpful, escalate the ticket to the Service Manager via the Samsung Helpline, mentioning that the "Airflow Error" is recurring despite professional cleaning.
⚠️ Note:
If this information helps you get a permanent fix from Samsung, please click the three dots (⋮) above and select "Accept as Solution" to help other WindFree users! 💙🚀

[cs_member8]

Dear Samsung Member,

Greetings from Samsung Customer Support!

As per your concern, we would like to inform you that your concern has already been highlighted with our dedicated team. They will contact you shortly and provide a resolution in accordance with Samsung guidelines.

We appreciate your patience and understanding in this matter.

Warm Regards,
Samsung Customer Support