Unlike a standard cartridge or a simple seal kit, the “40278 Full” designation indicates that you are receiving a comprehensive component. Depending on the manufacturer’s parts guide, this usually includes one of two configurations:
Once installed, the water softener operates on a simple two-step cycle: 40278 water softener full
: If your brine tank is "full" of water (a common problem), reviewers often find that cleaning the nozzle and venturi (included in full kits) fixes the issue. Per WaterSmart Systems , a tank full of water usually indicates a dirty or blocked injector rather than a total system failure. Expert Review Summary Ease of Install ⭐⭐⭐⭐ Unlike a standard cartridge or a simple seal