Step 1: Open up the lid to access the timer, verify the screen is on. Step 2: Check whether you are on solar or AC plug. If on solar, switch to plug. Step 3: Verify that outlet the AutoRoost is plugged into is powered. Step 4: Be sure that programming is set to 1-On (Time) 1 Off (Time+1 second) Step 5: Be sure that timer is set to "auto off". Step 6: Verify that the magnet unlocks when turning timer to on. (Do not leave timer in on position, turn back to Auto Off) Step 7: Verify all spade connectors are plugged in fully and in Correct Order. From top to bottom: (Blue, Red, Red, Black) Step 8: If still having issues, take pictures of timer and plugs and email them to support@hengear.com. For more information watch this video here!