Balboa 55137 2-Relay Circuit Board Expansion

Expander Board for 2nd pump used on VS520 Systems. Includes 30-amp fuse.

• **Warning** This expander circuit board will NOT Replace 56710 / X-P3322 used in LPI501 Systems and could result in fire and damage to electrical components.

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****).