Air bubbles are weak or absent from jets even though water flow seems normal.

Safety: Basic checks can be done with spa running; avoid loose clothing near moving parts.

• Step 1 – Open air controls: Turn the air control knobs on the spa shell fully open and test jets.
• Step 2 – Inspect air intakes: Locate air intake fittings under the cabinet lip and ensure they are not blocked by debris or insulation.
• Step 3 – Check air lines: With cabinet panels removed, inspect clear air tubing and manifolds for kinks, water accumulation, or cracks.

Replace any failed air check valves or cracked manifolds with AquaRest-compatible parts.