Hunter Pro-C 'P ERR' Pump Error: Replace Pump Start Relay After Wiring Checks

Intermittent "P ERR" on Hunter Pro‑C; Voltage, Distance, Relay Cleaned, Bypassed

The fault is usually in the wiring to the pump start relay or the relay itself.

Bypassing the relay with 120 VAC is not recommended for permanent operation.

Irrigation: Hunter Pro-C Shows Running But No Water: Test Controller Voltage Output; Hunter Controller “ERR” on All Stations – Pump/Master Valve Short; Hunter Pro‑C Date Malfunction – Shows Days 10‑25 Missing, Up to 99; Rain Bird DV100 Valve Won't Shut Off? Clean or Replace Diaphragm; Hunter Pump Start Relay Not Clicking? Check Voltage at Controller & Relay; Hunter Pro-C OP ERR / IC ERR: Reset & Check Master Valve/Pump Circuit; Hunter Pro-C "P Err" and Zone Errors – Pump Start Relay Wiring; Hunter Control Won't Start Well Pump – Check Pump Start Relay Circuit; Troubleshooting Hunter Pro-C Module Failures After a Storm; Hunter Pro-C Pump Error: Diagnosing PSR & 220V Pump Issues

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