If a fault has caused the device to become trapped in regeneration mode, you will hear these noises when you would not normally hear them. During this operation, you may hear hissing or flowing water. Typically, regeneration takes around 2 hours from start to finish and occurs around 2 or 3 a.m. Your system may have just reset the settings, or it may have encountered a hiccup that resulted in continual regeneration. The metered demand head may not have given up on you entirely. It’s doubtful that you’ll be able to repair the gadget after it’s decided to call it quits. Replacing the damaged component will, once again, resolve the problem. Control heads normally last as long as your system, but if you have an older unit, it may have reached the end of its useful life. Your water softener’s control head or control valve may also fail at some point. The only option to address this problem is to replace or repair the defective component. Circuit switches control the behavior of a water softener, and if they fail, the system will continually renew. If your system’s circuit switch is damaged or broken, your softener may not function correctly. Why does my water softener keep regenerating? Circuit Breaker Switch How to stop your water softener from regenerating.What is the water softener regeneration cycle?.Causes of Long Water Softener Run or Regeneration Cycles.Why does my water softener keep regenerating?.