Jets are weak or some seats have very little water pressure.

Safety first: Turn off power at the GFCI breaker before removing filters or opening any plumbing unions.

• Step 1 – Clean filter: Remove the Nordic filter cartridge and rinse thoroughly. For testing, run the spa briefly without the filter to see if jet strength improves.
• Step 2 – Check water level: Ensure water level is above all jets and suction fittings to prevent air ingestion.
• Step 3 – Open jets and diverters: Turn each individual jet face fully counterclockwise to open. Set any diverter valves to the center position to balance flow between seats.
• Step 4 – Verify slice valves: In the equipment bay, confirm that all slice (gate) valves on suction and return lines are fully pulled up/open.
• Step 5 – Bleed air: If the spa was recently refilled, loosen pump unions slightly to release trapped air until water appears, then retighten.
• Step 6 – Inspect pump impeller: If flow is still weak, remove the pump wet end and check for debris or a broken impeller. Replace as needed.