A working softener regenerates on a schedule that matches how much water your household uses. When it starts cycling far more often than that, it burns through salt and water, and the hard water it is supposed to treat may still reach your taps. This failure is easy to miss because the unit keeps running and nothing looks broken from the kitchen.
What the loop looks like
A regeneration loop means the control keeps starting the rinse and recharge cycle when it should be idle. You might hear the drain running at times you never noticed it before, see a steady gurgle from the cabinet, or find that the salt in the brine tank drops faster than you are used to. Each of those is a clue, not a diagnosis, so the goal is to confirm the pattern before you act on it.
Check these before you call anyone
Start with a plain count rather than a guess. Over three or four days, write down the time of each cycle the unit starts. If the controller has a history screen or a last-regeneration reading, use that instead of memory. Compare the count with how the house actually uses water. A laundry-heavy stretch, a houseguest staying for days, or an outdoor system tied to the same line can all raise demand, and that can explain a few extra cycles. A count that climbs while your use stays the same does not have that explanation.
Next, look at the brine tank. Salt that drops faster than usual, or a tank that seems to hold more water than normal, suggests a cycle is not finishing cleanly. Note what you see and do not try to fix it by adding salt, because the cause usually sits in the control or the valve, not in the salt.
Finally, listen and look at the drain. If water runs to the drain at hours when nothing in the house is using it, write those times down next to your cycle count. Two lists that line up are far more useful to a technician than a general complaint.
What to tell the technician
Give the technician your cycle count, the number of days you counted over, the drain times you noticed, and what you saw in the brine tank. Then ask:
- Is the control set to a timer or to metered operation, and does the setting match how the unit was installed?
- Does the meter or valve position sensor show a fault, and can they test it on the visit?
- Can the valve be checked for a stuck or partly open position?
- Is a control board or sensor covered under the written warranty, and which paper says so?
- Until the repair is done, should the unit stay in service or be bypassed, and who will tell you if that changes?
What not to do
Do not open the control head, loosen valve fittings, or change the cycle settings just to stop the noise before you know the cause. If the unit keeps cycling or the drain runs constantly, do not disconnect it on your own unless the manual tells you to, since an interrupted cycle can leave the unit in an unclear state. Call for service and describe what you counted.
If you need a company to come out, the rankings on our best water softener companies in St. Louis page are a reasonable starting point. Ask each one the same questions above, and write down how each answers them.