Air conditioner runs but does not cool the room effectively; air from vents is only slightly cool.

Safety first: Unplug the unit before cleaning internal components.

• Step 1 – Clean filters: Remove and wash filters with mild detergent. Dry completely before reinstalling.
• Step 2 – Clean coils: Gently vacuum or brush dust from both evaporator (indoor) and condenser (outdoor or rear) coils. Use a coil cleaner approved for air conditioners if heavily soiled.
• Step 3 – Check room conditions: Close doors and windows, and reduce heat sources (ovens, direct sun) in the room.
• Step 4 – Verify fan speed and mode: Set the Sencor unit to COOL mode with high fan speed and a low temperature setpoint.
• Step 5 – Professional check: If cooling remains weak after cleaning and proper settings, have a technician check refrigerant charge and compressor performance.