JP-2600-011 CIRCUIT BOARD JACUZZI PREMIUM FOR 2001 PLATINUM SERIES MODELS TRITON/SANTINA/QUANTUM/PINNACLE/LASER R327000 CONTROL BOX CHIP#R327R1D To determine what board you have look at the lower left corner and on the black computer chip. ---------------------------------------------------------------------------------------------------------------VERY INPORTANT: IF YOU BOARD NUMBER ENDS WITH A LETTER THE REPLACEMENT MUST BE EQUAL OR GREATER TO REPLACE THAT BOARD. EXAMPLE: C2000R2C --- THIS CAN BE REPLACED WITH A C2000R2C - R2D - R2E - R2F ETC -BUT NOT A R2B OR A R2A BOARD.