We have a pool/spa combo with one pump, two Jandy valve actuators, and a Jandy Aqualink PDA. To switch from "pool" to "spa" modes, you select spa mode from the main screen on the PDA. Ours will not turn on, it stays off. However, the word "spa" shows up at the top of the PDA, but the spa mode remains off.
I have checked the valve actuators by flipping the toggle switch on each actuator, and both turned. I then turned the pump on, and the spa jets started working properly. However, it still was in pool mode on the PDA, so therefore when I tried to heat the spa, the heater would want to heat the pool instead.
Why wouldn't the PDA be communicating with the valves and pump to switch from "pool" mode to "spa" mode? Thanks for any help.