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This is the Balboa GS501SZ circuit board, it has a bar code number of 54516.
This PCB is compatible with the GS501SZ control box.
This hot tub circuit board must only be fitted to the hot tub control system specified, it should be fitted by a competent individual as all our boards are tested prior to sending out, so we recommend you read our easy to understand PCB installation notes in our troubleshooting section as a faulty install will result in board damage and invalidate your warranty.
This PCB is compatible with the GS501SZ control box.
This hot tub circuit board must only be fitted to the hot tub control system specified, it should be fitted by a competent individual as all our boards are tested prior to sending out, so we recommend you read our easy to understand PCB installation notes in our troubleshooting section as a faulty install will result in board damage and invalidate your warranty.
Port J17 allows either a blower or another 1 speed pump to be run, protected by 10amp fuse (quick blow)