You may have inadequate exhaust. Open more windows or doors. For every 1,000 CFM of air delivery 2 sq. ft. of unrestricted air relief is required. Check the water distribution system to make sure there is sufficient water to the pads and check pads to ensure they are not clogged. If pads are not wet, check to see if recirculating pump is operating. Follow the procedures in owner’s manual for servicing the pump. Remove the pump from cooler and plug it into another electrical outlet. If it still not working replace pump. Remember to periodically check the pads, clean them and/or replace as needed.