Hello, you will want to disable smart watering for the device. To d this go to settings, devices, and then turn off smart watering. If it will not let you water at all because of a rain sensor it is probably because your rain sensor it turned on at the timer. To turn it off go to the timer set it to auto and hold down the rain delay button. If sensor off appears then it has just turned off and should function properly. If you need any further assistance please just let us know.