Just looked under the covers for additional info ... I own a 2000 Coleman Horizon 400 (Caribbean) Hot Tub. I accidently locked the keypad and I can not unlock it using the given procedure (Program, Mode, Set Down) Tried 20 times within the 3 seconds allotted. The Program Key is supposed to be functional when locked. And when I press is the display should say "LOC". But it does not. This tells me the Program Key is not working. Tried powering the unit off for hours, several times. All I get is the Temp and the Lock Symbol. Is there some other method of unlocking the keypad. Maybe jumpers on the control board or a hard wire reset of some sort on the control board? I can't believe that the keypad went bad simply by accidentally locking it!
Thanks .... Rod