Variable-speed Jandy pump display shows PRIMING or PRIME FAIL; pump repeatedly starts and stops trying to prime.

Safety first: Turn off power at the breaker before opening the pump. Never run the pump dry for more than 30–60 seconds.

• Check water level and skimmers:
  • Ensure pool water is at least halfway up the skimmer opening.
  • Remove and clean skimmer baskets and ensure no large debris is blocking the skimmer throat.
• Inspect pump lid and O-ring:
  • Remove the Jandy pump lid and clean the sealing surface.
  • Inspect the lid O-ring for cracks, flattening, or dirt.
  • Lubricate with silicone-based pool lube or replace if damaged.
• Check suction-side fittings:
  • Tighten unions on the suction side of the pump.
  • Inspect for visible air bubbles in the pump lid when running; this indicates an air leak.
  • Verify Jandy valves are fully open and not drawing air from an unused line.
• Manually prime:
  • Fill the pump strainer housing completely with water using a garden hose.
  • Reinstall lid, open all valves, restore power, and start the pump.
• Adjust priming settings (VS pumps):
  • On Jandy variable-speed models (e.g., VS FloPro), enter the menu and increase priming RPM and/or priming time per the manual.
• If priming still fails: There may be a suction line blockage or underground leak. Contact a pool professional for pressure testing and further diagnosis.