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Jandy Aqualink Rs
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Troubleshooting Manual AquaLink RS OneTouch ... - Jandy
www.jandy.comcommunicate via serial communication, using signals like the standard "RS-485". If either of the communication wires (inner pair) is broken or misconnected, but the power supply wires (the outer pair) are connected properly, the controller will stop responding. It may show a steady screen of information, and stop responding to its buttons.