40278 Water Softener Full [hot] (2026)

40278 Water Softener — Complete Guide

• Fiberglass Mineral Tank (10” x 40”): Non-corrosive, rated for high pressure.
• Brine Tank (15” x 17” or larger): Holds the salt pellets.
• Fleck or Clack Control Valve: The industry gold standard for reliability (often a Fleck 5600 SXT or 7000SXT).
• 2.78 Cubic Feet of High-Capacity Resin: This is the key. At 32,000 grains per cu. ft., this system has a total capacity of roughly 89,000 grains before regeneration.
• Bypass Valve & Installation Kit: Brass or plastic bypass, adapters, and sometimes a brine line.

Manual 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

: If the nozzle/venturi is clogged, the system cannot create the vacuum needed to pull water out of the tank during the "Brine" cycle. Installation and Setup For those installing the unit themselves, the Morton DIY Installation Checklist provides a step-by-step guide. Key requirements include: Ultra 27000 GRAIN WATER SOFTENER (Model M27) 40278 water softener full