Evolution Spas
Non-Functional Air Venturi System
Air controls on the spa top rail do not change jet intensity when turned.
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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
Stuck or broken air control valve, Disconnected air line, Blocked venturi ports at jets, Water intrusion into air lines
How to Fix / Troubleshooting
Safety: Turn off power at the GFCI breaker before accessing under the shell.
- Check operation: Turn each air control knob while jets are running and listen for air intake sound.
- Inspect air lines: From inside the cabinet, locate the air control valves and ensure the flexible air tubing is connected and not kinked.
- Clean valves: If accessible, remove and clean the air control valve body of debris or scale.
If air controls remain non-functional, replace the air control valve assemblies.
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Repair Difficulty
Medium
3/5
Required Part
Air Control Valve
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