E19 error and the Judo softener indicates a resin capacity or exhaustion fault before scheduled regeneration

Safety first: No special hazards beyond normal; avoid opening pressurized components.

• Verify hardness setting: Check the programmed raw water hardness against a recent hardness test. Correct any mismatch.
• Review usage: Compare household water consumption with the softener's capacity. If usage has increased significantly, more frequent regenerations may be normal.
• Check resin condition: If water remains hard soon after regeneration, the resin may be fouled by iron or organics. Perform a resin cleaning cycle using a Judo-approved resin cleaner.
• Inspect flow meter: Ensure the flow meter is clean and accurately counting. If it undercounts, the unit will regenerate too late and show E19; replace the Judo turbine flow meter sensor if faulty.