TriStar XE Not Working with ProLogic Automation

[tcarroll2]

My pool was installed in 2011. My pump recently died and I cannot buy the same kind. I purchased a TriStar XE Series 2.25hp pump as a replacement for the old 1.85hp pump. The new pump does not use the neutral wire. I connected the two hot leads and the ground and turned on the breakers for the ProLogic system. The time of day is correct in the ProLogic system to run the pump and I have 120vac at each lug on the pump, but the green light on the pump does not light up, and the pump never starts running. If I bypass the ProLogic system and go direct from the GFCI breaker to the pump, the green light illuminates and the pump starts running.

What would cause the pump to not run when wired into the ProLogic automation system and delivering 120vac per leg, but yet run when it is wired directly to the GFCI breaker with 120vac per leg? It makes no since to me!

I need the pump to be controlled by the aProLogic system because I have a spa connected to my pool and need the pump to run at 100% when the spa is being used.

Thanks for your help.

 

[ajw22]

Show us pictures of the wiring at the pump and at the ProLogic relays.

What voltage do you have BETWEEN L1 and L2 at the pump when connected to ProLogic?

 

[JamesW]

The XE Pumps are not designed to communicate with Prologic, so it was a bad choice.

You can only do On/Off with a relay.

You should have gotten a pump that was compatible with the Prologic.

In any case, the pump is probably miswired or maybe the relay is bad.

When testing for 240, you have to test Line-to-Line and not each leg to ground.

 

[JamesW]

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