40278 Water Softener Full Extra Quality May 2026

Debris prevents the system from sucking brine out of the tank during regeneration.

Once you have cleaned the nozzle and venturi, start a manual "Extra Regeneration." Watch to see if the water level drops during the "Brine Draw" cycle. Preventing Future 40278 Errors

Avoid "rock salt" which contains impurities. Use evaporated salt pellets or solar salt. 40278 water softener full

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.

The of your softener (e.g., Kenmore Elite, Whirlpool WHES40) Debris prevents the system from sucking brine out

Take a broom handle and gently push down on the salt. If the top layer is hard but there is hollow space or water underneath, you have a bridge. Break up the salt carefully to allow it to mix with the water again.

This is the most common fix for "full" tanks. Turn off the water supply. Use evaporated salt pellets or solar salt

Clean the small screens and the tiny flow plugs with warm, soapy water. Ensure the pin-sized holes are not blocked.