PSo
Vita Spa
Pressure Switch Open
Display shows PSO or PSo; pump may not start or may shut off quickly.
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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
Faulty pressure switch on heater manifold, Low water flow through heater, Loose pressure switch wiring
How to Fix / Troubleshooting
Safety: Turn off power at the GFCI before working on the pressure switch or plumbing.
- Step 1 – Check water level and filters: Ensure proper water level and clean Vita Spa filters to restore normal flow.
- Step 2 – Inspect pressure switch: Locate the pressure switch on the heater manifold. Check for loose wires or corrosion at the terminals.
- Step 3 – Adjust or test switch: Some Vita Spa pressure switches are adjustable. Using a multimeter, verify that the switch closes when the pump runs. If it stays open, adjust slightly per manufacturer instructions or replace.
- Step 4 – Replace if faulty: If the switch does not respond to adjustment or testing, install a new OEM Vita Spa pressure switch.
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Repair Difficulty
Medium
3/5
Required Part
Pressure Switch
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