40278 Water Softener Full [updated] May 2026

Understanding the Meaning and Solutions for the "40278 Water Softener Full" Error

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 40278 water softener full

Avoid "rock salt" which contains impurities. Use evaporated salt pellets or solar salt. Understanding the Meaning and Solutions for the "40278

A hard crust of salt forms over the water, tricking the sensor or preventing water displacement. 40278 water softener full