From the Ray website, probably the same for the 1000
. To Reset the ST2000+ tiller, press and hold the +1 and -10 buttons together, the unit will beep and flash the pilot number (2000), release the +1 and -10, then press and hold the +1 and -10, and the pilot number will blink, use the +1 to change to different pilot number (1000). Press and hold the +1 and -10 to lock that number in. Then cycle power to the unit, when the unit turns back on follow the above procedure and change back to 2000, cycle power and the unit will be reset.