Legacy Calibration Error

Common causes:

• Clogged filter or nozzle blocking flow (often from unflushed FlexPipe)

• Pressure too high or too low

• Flow meter misconfigured or failing

• Another active error interfering with calibration

• Head requires manual calibration (no pressure sensor)

What to do:

• Check that pressure is constant between 40–80 PSI

• Remove the nozzle and clean the filter

• Reinstall and run calibration again

If you have a flow meter, try turning it off, then back on after calibration.

If calibration still fails, check for other errors on the Zone screen or switch to manual calibration if needed.