If your water softener screen is flashing "40278" or showing a "Full" error, you are likely dealing with an overflow or a sensor malfunction. This specific code often appears on models manufactured by brands like Kenmore, Whirlpool, or EcoPure, which share a common internal design.
Why isn't my water softener meter working? - Sears Parts Direct 40278 water softener full
Features a built-in, self-cleaning whole-house filter that removes dirt and sediment, eliminating the need for separate cartridge changes. If your water softener screen is flashing "40278"
Before buying, verify these three things: 40278 water softener full
When your brine tank fills with too much water, it prevents the system from regenerating properly, leading to hard water bypass and potential flooding in your laundry room or basement. Common Causes of the 40278 Error