Evolution Spas Air-Locked Jet Pump

Jet pump runs but no water comes out of the jets after refilling the spa.

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Possible Causes

Air trapped in suction line, Pump not properly primed after refill, Closed suction valve, Loose pump union drawing air

How to Fix / Troubleshooting

Safety: Turn off power at the GFCI breaker before loosening any unions.

  • Verify water level: Ensure water is above all suction fittings and skimmer.
  • Open valves: Confirm all suction and return valves to the pump are fully open.
  • Bleed pump: Loosen the union on the pump discharge side until air escapes and water begins to seep, then retighten.
  • Restart pump: Restore power and run the pump. Repeat bleeding if necessary until water flow is restored.

If the pump still will not prime, there may be a suction-side leak or internal pump issue requiring service.

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Repair Difficulty

Easy 2/5

Required Part

Jet Pump
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