By the way; when I put it on service mode, the screen gives me a lost power error and the screen goes dark.
P,
If the pump screen on your IntelliFlo goes blank, when the EasyTouch is in the Service mode, it means that your pump is not wired correctly.
I suspect it is wired to the load side of the pump/filter which is wrong. The IntelliFlo should get constant AC power.
It sounds to me like you have two or three separate problems.
If the booster pump runs when in the Service mode and the Aux 1 button is pushed, then it can't be a bad booster pump.
And you have some kind of com issue.
I need you to run one more quick test and then we can see what we can fix.. I assume you have ScreenLogic... Is that true?
If so, do the following..
Put the system back into AUTO.
Use ScreenLogic and turn on a pool light. Ensure that the ScreenLogic light Icon turns green to indicate the light is on. Then, go out and actually visually confirm that your light is on. Next, go over the the EasyTouch and turn the light off by pressing the Aux 2 button. Ensure the light is actually off. And finally, look at ScreenLogic and confirm that the ScreenLogic light icon is off.
Please let me know how that test worked.
Thanks,
Jim R.