A common problem
If the unit runs but the room stays warm, the cause may be a setting or restricted airflow, but it can also be a fault. Start only with checks described in the unit manual.
Before requesting service, check these simple and safe points:
Make sure cooling mode (snowflake) is selected and the set temperature is below the room temperature.
Check that the filters are clean and correctly fitted; clean them only as directed in the manual.
Keep the air inlet and outlet clear and close windows and doors.
If the unit displays an error code, note it and the model number before contacting service.
If cooling does not improve after checking the settings and filters, or if ice, unusual noise or an error code appears, switch the unit off and request a diagnosis.
Do not open the casing or add refrigerant yourself. A leak must be found and repaired before the system is recharged.
A better project. A cleaner installation. Fewer unforeseen costs during construction.
