Ive had my Fleck 3600sxt for a month now and it hasn't regenerated yet. I have it set to regenerate every 14 days or earlier if needed. Can't figure it out?????
3600SXT? Well, I assume you mean the 5600SXT since the 3600 was never available in electronic form, and it was discontinued about a decade ago...
A common problem with newly installed systems is the turbine in the meter can get a piece of teflon tape, debris, etc inside of it. Do you see the meter indicator flashing when water is flowing?
On the SXT screen, right hand side, you should see a water drip (not the faucet) and it should blink when you turn on water inside the house. The system must be in service (not regeneration). I assume your system is a metered 5600SXT. Check that first and let us know what you find.