1. Continuous drainage at the outlet
1.1 Water leakage inside the valve body
1.2 The valve does not act when it is in the backwashing or forward washing position
2. Water channeling in valve station
3. Brine tank water overflow
3.1 Replenish too much water
3.2 The water in the salt tank is not completely absorbed after salt absorption
3.3 Replenish water to the salt tank during backwashing
4. Resin loss
4.1 Resin discharge
4.2 The softened water or regenerated wastewater is yellow, that is, the exchanger produces sol
