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This is the Balboa Expander Pump Relay (GS-GL) Board - 30amp, it has a bar code number of 55025. It allows the system to have an additional pump or blower if required.
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 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.