Ports to connect to on The Attendant: Bus 1 – 4
In order to communicate with the Hayward EcoStar pump you will need to connect one of the serial (BUS1-4) communication ports on The Attendant, labeled D+ and D-, to the #7 and #8 COMBUS connectors on the pump’s low voltage connection block.
IMPORTANT
There have been several generations of the EcoStar variable speed pump. If your pump has the ability to set the COMBUS address via the pumps configuration menu, then it is likely that the older pump version does not support using a Hayward Unique Address (HUA). You will need to ensure you choose the right address for the pump. It is likely this is the Pool Filter setting but the unique situation of your pool setup may dictate that its address is set to something different.
The connection diagram that follows works for all generations of the EcoStar pump regardless of whether HUA is available:
