I have included the ATK script, the status of the status of the sensors/switches and the result. Even though the script says If AT_TOP CLOSED Then OFF, when the upper sensor is closed it turns on the ATK. Twice it has almost emptied the reservoir. First not sure what causes it to cover the higher sensor and then what causes it to turn the pump on when the higher sensor is covered. I did turn the ATK system off manually but it keeps turning it back on. Help!!