The original circuit board is no longer available, this is the replacement and installs without any issues.
Original Chip Number BF01R1A/BF01R1B
Balboa Water Group Number 52848/53618/52847/52847-03/52847-04
THIS BOARD INSTALLED IN A METAL BOX.
It is very important that you do not order a circuit board based on looks, several boards look alike but have different software or chips. It is the chip that drives the board and gives it its unique functions. To correctly identify a circuit board the chip number should be used to identify it. It can be found on a white sticker near the center of the circuit board. Another number that is helpful in identifying a Balboa Water Group circuit board is the five digit number found on most boards (5****).