- The water tank might be full >>> Dump the water from the water tank.
- The room temperature might be lower than the set temperature >>> Reset the temperature.
- The doors and windows are not closed >>> Ensure all windows and doors are closed.
- There are heat sources inside the room >>> Remove heat sources if possible.
- The exhaust air hose is not connected or blocked >>> Connect or clean the exhaust hose.
- The temperature setting is too high >>> Reset the temperature.
- The air inlet is blocked >>> Clean the air inlet.
- The ground level is not flat enough >>> Place the unit on flat ground.
- The sound comes from the flowing of the refrigerant inside of the air conditioner >>> The refrigerant noise is normal.