One of my valve actuators, for the spa, is not working when I turn on the spa from either the spa side button or inside the house. The system is a Compool by Pentair. The actuator itself works when I flip the switch on the valve. The other two actuators work properly when the spa button is pushed. I opened up the panel at the main controller and jiggled some wires etc., which worked when it happened once before, but to no avail this time. Anyone ever experience anything similar or have any ideas?

Thanks in advance.
Mark