Re-establish power to the controller, and then reprogram it. The recharging circuit will charge the battery in about 12 to 14 hours. Display shows numbers and letters, but is not moving or advancing. Fuse has blown. If the fuse blows again on a particular station, that station's solenoid or field wires may have a short circuit that needs repair.
Power is off to the controller.
Determine why power to the controller has been interrupted, and re-establish power. Display is blank. If the controller is still receiving power, an electrical surge exceeding the controller's built-in surge protection may have damaged the controller's microprocessor. Unplug the controller and remove the battery. Wait two minutes.