Come across this old thread in my search for an answer. Having same problem. Water is forcing itself out from the ‘o’ ring connection between upper and lower softener units. Have replaced upper softener panel (91670172) in case of a fine crack or faulty seam. ‘O’ rings seam fine. No blockage in salt/resin container. Did find a small piece of plastic caught inside the grey nozzle insert (92694801) at base of sump. However fault still there. Help much appreciated!
Rick
Thanks for reply. I’ll try the ‘O’ rings. Never had this problem on any other makes that use this similar system (Bosch, Whirlpool to name two).
Cheers Rick