Why is my water softener not regenerating?
Scale and spotting have come back and the salt level never seems to drop. That combination points at three things, and two of them you can check yourself in five minutes.
Why has my water softener stopped regenerating?
Most often a salt bridge, a hardened crust across the brine tank that stops the system drawing brine, so the resin never recharges. Next most common is a blocked brine line or injector. Third is a control valve still on factory defaults that never matched your water in the first place.
First, confirm it really has stopped.
The reliable signal is not the salt level on its own, it is scale and spotting returning at the same time as a salt level that has not moved in weeks. If the salt is going down and the water is still hard, the problem is capacity or programming rather than regeneration.
If you have a hardness test strip, take a reading at a cold tap on the treated line. A reading close to your city’s number means the softener is passing water through untreated.
If you would rather not work through this yourself, this is what our professional installation covers, and most of it is a single visit.
Check one: the salt bridge.
A salt bridge is a hard crust that forms across the brine tank, leaving an air gap underneath. From the top the tank looks full. Underneath, the water cannot reach the salt, so no brine is drawn and the resin never recharges.
Press gently down through the salt with a broom handle. If it meets a hard layer and then gives way into a gap, that is a bridge. Break it up carefully, without striking the tank walls, and let the system run a manual regeneration.
Check two: the brine line and injector.
If there is no bridge, the next candidate is a blocked brine line or a fouled injector, the small venturi that draws brine into the resin tank. Both are inexpensive parts and both are a service call rather than a replacement.
The symptom is similar: salt level static, hard water returning, and the system appearing to cycle normally.
Check three: the programming.
This one is not a fault at all. A control valve left on factory defaults regenerates on a timer against an assumed hardness, which may bear no relationship to your water. In an NTMWD city at about 11.8 grains per gallon, a valve set for much softer water will run out of capacity between regenerations every time.
That is the most common thing we find on systems installed by someone else, particularly in newer Frisco and Anna homes where the unit went in with the build.
When to stop and call
- The tank is not bridged and the salt level is still static
- The system runs constantly, or sends water to the drain continuously
- You have broken a bridge, run a manual regeneration, and hardness has not improved
- You do not know what the valve is programmed to, and nobody has ever tested your water
Answered before you ask.
How do I break up a salt bridge safely?
Press down through the salt with a broom handle to find the crust, then break it into pieces without striking the tank wall. Do not pour hot water into the tank as a first move. Once cleared, run a manual regeneration and re-test the water afterwards.
How often should a softener regenerate?
Roughly every seven to twelve days for a correctly sized metered system serving a family of four in an NTMWD city. Much more frequently suggests undersizing; much less often usually means the valve is set for harder water than you actually have.
Is a bridged tank worth repairing on an old softener?
Almost always. Resin beds and valve bodies last a long time. A bridge or a failed injector on a fifteen-year-old unit is a repair, not a reason to replace the system. Whether a whole unit is due for replacement is a different question, covered in replacing an old water softener.
Still hard after all three checks?
Describe the symptom and we will narrow the cause. Most faults are diagnosable on the phone and fixed in one visit.
