Ports to connect on The Attendant: BUS1 – BUS4
Ports to connect on The Attendant Mini: BUS1 – BUS2
The Attendant can connect to these pump models in several ways, depending on the pump’s model and manufacturing date.
The preferred method is Serial RS-485 communication using Hayward Unique Address (HUA), which allows precise speed control and real-time error reporting. Most pumps manufactured after 2014 support this protocol.
Alternatively, you can activate preset speeds (Relay Control) using dry contact relay ports and inputs 1 – 3 on the pump.
Serial RS-485 Connection for Variable Speed Control using HUA
for Pumps Manufactured after 2014 (Recommended)
In order to communicate with the Hayward pump via the HUA you must connect terminals A and B on the pump’s low voltage connection block to one of the communication bus data ports (BUS 1 – 4) on the The Attendant, labeled D+ and D-.
The display wires of the pump in the newer Hayward drives (Gen3) are connected to the RS485 port and must be disconnected before connecting the communication wire from The Attendant. You cannot leave the display connected when the pump being controlled by automation.
When connecting to the pump in this manner, ensure the SW200 DIP switch 1 on the pump is set to OFF. Before switching the DIP switch off, turn off the power to the pump for at least 2 minutes.
Wiring RS-485 Hayward Variable Speed (Gen 3) Pump:
On newer (GEN 3)models, it is located on a sticker inside the wiring compartment, on the low voltage/high voltage separator.
Wiring RS-485 Hayward Variable Speed (EcoStar Style) Pump:
The HUA address can be found on the drive’s display for EcoStar models.
Low Voltage/Dry Contact Connection
Hayward pumps may be controlled to operate a pre-set speed using heater ports or relays on the Attendant. This option is generally not recommended but may be used in case you have a pump with a failed serial port. To use this connection method select Generic brand and Multi-Speed model when adding the pump in the Poolside app.