Display shows P1 and spa may not heat; circulation appears weak or intermittent.

Safety first: Turn OFF power at the breaker before removing filters or opening unions.

• Check water level:
  • Ensure the spa water level is above all skimmer openings and suction fittings.
• Clean or bypass filters:
  • Remove filter cartridges and rinse thoroughly with a garden hose.
  • Temporarily run the spa without filters (for testing only) to see if P1 clears and flow improves.
• Bleed air from circulation pump:
  • Locate the small circulation pump in the equipment bay.
  • Loosen the pump union slightly until water seeps out to release trapped air, then retighten.
• Check pump operation:
  • With power ON, feel the circulation pump housing; it should vibrate slightly and feel warm after running.
  • If it is silent and cold, the motor may not be receiving power or is failed.
• Inspect wiring:
  • Turn power OFF and verify that the circulation pump is firmly plugged into the correct output on the control pack.
• Replace pump if necessary:
  • If the pump hums but does not move water, or is seized, replace the circulation pump with a USSPA-compatible unit.