Filter cartridge may be dirty. Clean or replace the filter.
Pump may have airlock. Click here to learn how to prime the pump.
The suction fittings may be blocked. Remove any debris that may be blocking the suction fittings.
The filter skimmer may be blocked. Remove the blockage.
Spa may be running in filtration mode. Press JETS or JETS 1 button to turn on high speed pump.
Gate valves may be closed. Open gate valves.
WARNING – Never operate your spa with the gate valves closed!