Jandy RS4 controller has no lights


New member
Sep 30, 2019
When replacing a leaking pipe the wire to one of my Jandy actuators was accidentally cut. This caused the glass 3.5A fuse on the control panel to blow which I have replaced. I have checked the transformer and there is 26V on the output side but nothing is lighting up. Fuse isn't continuing to blow, just an apparently dead circuit.

Does anyone have a suggestion on the next steps for diagnosing the problem?

For the moment I've direct wired the pump to keep the water moving but I would really like to get the controller working again.