The status light lives on top of the main cover. To access the light, you'll need to remove the cover and locate the faceplate panel.
Remove the Top Cover
1. On the back of the unit, unhook the two clips that hold the cover onto the tank below (Figure 1). Flex/pull the cover out and away from the softener at these clips.
2. There are two similar clips holding the front of the cover on as well. Slide the cover towards you to release these clips, being careful not to disconnect any wires. (Figure 2). It is normal for the plastic cover to produce some noise as it shifts and bends.
Locate the Status Light
The status light is directly above the digital display screen. It is a small bulb that clips into a circular hole in the plastic housing. If the light is out of place or unclipped, you can clip it back in here.