Cause : Lead pump not available comes when the selected lead pump is not available while in run. A "Lead pump not available" message can occur in systems that utilize multiple pumps, often referred to as lead-lag configurations.

"MPLF" Lead pump not available fault in Schneider ATV610 drive indicate an lead pump error. This means the selected lead pump is not available when drive run.

• Verify the state of the corresponding drive digital input for the pump availability information (for example "Pump 1 Ready Assign" MPI1 for the pump 1).