Air conditioner runs but does not cool the room effectively

Safety: Turn off power before cleaning filters or coils.

• Verify settings: Ensure the unit is set to COOL mode, temperature is set at least 3–5°C below room temperature, and fan speed is not on the lowest setting.
• Clean filters: Remove indoor filters and wash with warm soapy water. Dry completely before reinstalling.
• Clean coils: Gently vacuum the indoor coil fins. Outside, brush and rinse the outdoor coil to remove dust and debris.
• Check doors/windows: Close windows and external doors. Reduce heat sources (ovens, halogen lights) in the room.
• Observe compressor: Listen at the outdoor unit to confirm the compressor runs continuously when cooling is demanded. Short cycling may indicate a fault.
• If performance remains poor: A refrigerant leak or undersized unit may be the cause. Have an AEG technician check system pressures and capacity.