Softener will not power on; display is blank and unresponsive.

Safety: Verify the outlet is not controlled by a wall switch. Use caution when working with electrical components.

• Check outlet: Plug in a lamp or tester to confirm the outlet has power.
• Inspect transformer: Ensure the Pentair low-voltage transformer is plugged in and the cable is intact. Measure output voltage with a multimeter.
• Internal fuse: Some Pentair boards have a small fuse. With power disconnected, check and replace with the same rating if blown.
• Board replacement: If the transformer outputs correct voltage but the board remains dead, replace the Pentair electronic control board.