Catalina Spas
Seized Pump Motor or Air-Locked Pump
Spa makes a loud humming noise but jets do not move water.
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Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
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Possible Causes
Pump impeller jammed with debris, Motor bearings seized, Air lock after refill, Closed suction valves
How to Fix / Troubleshooting
Safety: Turn off power immediately if a pump hums without moving water to avoid motor damage.
- Step 1 – Check valves and water level: Ensure all suction valves are open and water level is correct.
- Step 2 – Bleed air: Loosen the pump union slightly to release trapped air until water flows, then retighten. Restore power briefly to test.
- Step 3 – Impeller check: If humming persists, a technician can remove the pump wet end and inspect the impeller for debris or damage.
- Step 4 – Motor replacement: If the shaft cannot be turned by hand (power off) or the motor remains locked, replace the pump motor or complete pump assembly.
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Repair Difficulty
Medium
3/5
Required Part
Jet Pump Assembly
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