The 40278 water softener is a popular model known for its efficiency and effectiveness in removing minerals from hard water. It's a demand-type water softener, which means it only regenerates when necessary, based on the water usage in your household. The softener uses a resin tank filled with resin beads that attract and remove minerals like calcium and magnesium, exchanging them for sodium or potassium ions.
If the display shows "FULL" alongside a blinking icon or an alert tone, it means the softener has reached its maximum calculated capacity (48,000 grains used) and requires an immediate cleaning cycle. 40278 water softener full