@pmd5700 Unfortunately, the timer will only stay delayed as long as the rain sensor is wet. If the wafers dry up before the next programmed cycle, then the timer will run as it’s programmed to. Your sensor may be out of sync, I would recommend re-syncing it. To do this, hold down the program transmitter button on the receiver on the wall, and then hold down the stem on the portion that sits on the roof. Your lights should blink and then it’ll be reprogrammed. To ensure it is working, create a test program for a few minutes in the future, and then hold down the stem on the sensor to cause a sensor delay. This should prevent the programmed time from running.