Balboa VS-501 M7 Printed Circuit Board.
Cross Reference Numbers:
106983, 33-54357-K, 54357, 54357-01, 54357-02, 54357-03, 54357-2 59-138-1683, MX-2000 and others.
Common chip numbers that can be replaced with this board (chip numbers are usually found on a large chip near the centre of the board):
167R1A, 167R1B, CS5100R1A, GVS501R1A, INF107R1A, MAS150, OC850R1A, OS501ZR, SCS501R1A, SCS501R1B, SCS501R1C, TS500SR1A, TS500SR1B, TS500SR1C, VKV502R1A, VKV502R1B, VS240RR, VS240RR2A, VS240RR2B, VS240RR2C, VS501R1A, VS501R1B, VS501RR1B, VS501ZR2A, VS501ZR2B, VS501ZR2C, VS501ZR2D, VZ501ZR2A, VZ501ZR2B and others.
Pump 1 (2 Speed or 1 Speed)
Make sure jet pumps are rated a maximum of 12 Amps.