I'm having some trouble with a relatively new water softener (<2 years). It seems like it is cycling when it should as the salt level is definitely going down, but the water is still hard.
While troubleshooting I came across a toggle setting that lets you choose KCl (Potassium) or NaCl (Sodium). Honestly, I haven't been paying that much attention to what type of salt I put in there, so theoretically I could have mismatched the setting to the salt that I'm using.
1) What does that setting do exactly?
2) Could a mismatch be responsible for it not softening the water?
Edit: For clarification, I understand the difference between NaCl and KCl. My question really boils down to how the softener treats them differently when you toggle the switch and what is the impact of having it set incorrectly?